kcov: collect coverage from remote threads #561
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fourkbomb
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to fourkbomb/linux
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Jul 1, 2018
When userspace unbinds gadget functions through configfs, the .free_func() callback is always invoked. (in config_usb_cfg_unlink()) Implement it as a no-op to avoid the following crash: [ 68.125679] configfs-gadget gadget: unbind function 'accessory'/ffffffc0720bf000 [ 68.133202] configfs-gadget gadget: unbind function 'audio_source'/ffffffc0012ca3c0 [ 68.142668] tegra-xudc 700d0000.usb-device: ep 0 disabled [ 68.148186] Bad mode in Synchronous Abort handler detected, code 0x86000006 [ 68.155144] CPU: 2 PID: 1 Comm: init Tainted: G U W 3.18.0-09419-g87296c3-dirty torvalds#561 [ 68.163743] Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT) [ 68.169566] task: ffffffc0bc8d0000 ti: ffffffc0bc8bc000 task.ti: ffffffc0bc8bc000 [ 68.177039] PC is at 0x0 [ 68.179577] LR is at usb_put_function+0x14/0x1c .... BUG=chrome-os-partner:49140 TEST="setprop sys.usb.config accessory,audio_source" on A44 and then switch back to default: "setprop sys.usb.config mtp,adb", no crash will be seen. Change-Id: I5b6141964aab861e86e3afb139ded02d4d122dab Signed-off-by: Mark Kuo <mkuo@nvidia.com> Reviewed-on: https://chromium-review.googlesource.com/321013 Commit-Ready: Andrew Bresticker <abrestic@chromium.org> Tested-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Insei
pushed a commit
to Insei/linux
that referenced
this pull request
Jul 20, 2018
When userspace unbinds gadget functions through configfs, the .free_func() callback is always invoked. (in config_usb_cfg_unlink()) Implement it as a no-op to avoid the following crash: [ 68.125679] configfs-gadget gadget: unbind function 'accessory'/ffffffc0720bf000 [ 68.133202] configfs-gadget gadget: unbind function 'audio_source'/ffffffc0012ca3c0 [ 68.142668] tegra-xudc 700d0000.usb-device: ep 0 disabled [ 68.148186] Bad mode in Synchronous Abort handler detected, code 0x86000006 [ 68.155144] CPU: 2 PID: 1 Comm: init Tainted: G U W 3.18.0-09419-g87296c3-dirty torvalds#561 [ 68.163743] Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT) [ 68.169566] task: ffffffc0bc8d0000 ti: ffffffc0bc8bc000 task.ti: ffffffc0bc8bc000 [ 68.177039] PC is at 0x0 [ 68.179577] LR is at usb_put_function+0x14/0x1c .... BUG=chrome-os-partner:49140 TEST="setprop sys.usb.config accessory,audio_source" on A44 and then switch back to default: "setprop sys.usb.config mtp,adb", no crash will be seen. Change-Id: I5b6141964aab861e86e3afb139ded02d4d122dab Signed-off-by: Mark Kuo <mkuo@nvidia.com> Reviewed-on: https://chromium-review.googlesource.com/321013 Commit-Ready: Andrew Bresticker <abrestic@chromium.org> Tested-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Insei
pushed a commit
to Insei/linux
that referenced
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Sep 28, 2018
When userspace unbinds gadget functions through configfs, the .free_func() callback is always invoked. (in config_usb_cfg_unlink()) Implement it as a no-op to avoid the following crash: [ 68.125679] configfs-gadget gadget: unbind function 'accessory'/ffffffc0720bf000 [ 68.133202] configfs-gadget gadget: unbind function 'audio_source'/ffffffc0012ca3c0 [ 68.142668] tegra-xudc 700d0000.usb-device: ep 0 disabled [ 68.148186] Bad mode in Synchronous Abort handler detected, code 0x86000006 [ 68.155144] CPU: 2 PID: 1 Comm: init Tainted: G U W 3.18.0-09419-g87296c3-dirty torvalds#561 [ 68.163743] Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT) [ 68.169566] task: ffffffc0bc8d0000 ti: ffffffc0bc8bc000 task.ti: ffffffc0bc8bc000 [ 68.177039] PC is at 0x0 [ 68.179577] LR is at usb_put_function+0x14/0x1c .... BUG=chrome-os-partner:49140 TEST="setprop sys.usb.config accessory,audio_source" on A44 and then switch back to default: "setprop sys.usb.config mtp,adb", no crash will be seen. Change-Id: I5b6141964aab861e86e3afb139ded02d4d122dab Signed-off-by: Mark Kuo <mkuo@nvidia.com> Reviewed-on: https://chromium-review.googlesource.com/321013 Commit-Ready: Andrew Bresticker <abrestic@chromium.org> Tested-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
vchong
pushed a commit
to linaro-swg/linux
that referenced
this pull request
Oct 4, 2018
When userspace unbinds gadget functions through configfs, the .free_func() callback is always invoked. (in config_usb_cfg_unlink()) Implement it as a no-op to avoid the following crash: [ 68.125679] configfs-gadget gadget: unbind function 'accessory'/ffffffc0720bf000 [ 68.133202] configfs-gadget gadget: unbind function 'audio_source'/ffffffc0012ca3c0 [ 68.142668] tegra-xudc 700d0000.usb-device: ep 0 disabled [ 68.148186] Bad mode in Synchronous Abort handler detected, code 0x86000006 [ 68.155144] CPU: 2 PID: 1 Comm: init Tainted: G U W 3.18.0-09419-g87296c3-dirty torvalds#561 [ 68.163743] Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT) [ 68.169566] task: ffffffc0bc8d0000 ti: ffffffc0bc8bc000 task.ti: ffffffc0bc8bc000 [ 68.177039] PC is at 0x0 [ 68.179577] LR is at usb_put_function+0x14/0x1c .... BUG=chrome-os-partner:49140 TEST="setprop sys.usb.config accessory,audio_source" on A44 and then switch back to default: "setprop sys.usb.config mtp,adb", no crash will be seen. Change-Id: I5b6141964aab861e86e3afb139ded02d4d122dab Signed-off-by: Mark Kuo <mkuo@nvidia.com> Reviewed-on: https://chromium-review.googlesource.com/321013 Commit-Ready: Andrew Bresticker <abrestic@chromium.org> Tested-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
plbossart
pushed a commit
to plbossart/sound
that referenced
this pull request
Nov 15, 2018
When userspace unbinds gadget functions through configfs, the .free_func() callback is always invoked. (in config_usb_cfg_unlink()) Implement it as a no-op to avoid the following crash: [ 68.125679] configfs-gadget gadget: unbind function 'accessory'/ffffffc0720bf000 [ 68.133202] configfs-gadget gadget: unbind function 'audio_source'/ffffffc0012ca3c0 [ 68.142668] tegra-xudc 700d0000.usb-device: ep 0 disabled [ 68.148186] Bad mode in Synchronous Abort handler detected, code 0x86000006 [ 68.155144] CPU: 2 PID: 1 Comm: init Tainted: G U W 3.18.0-09419-g87296c3-dirty torvalds#561 [ 68.163743] Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT) [ 68.169566] task: ffffffc0bc8d0000 ti: ffffffc0bc8bc000 task.ti: ffffffc0bc8bc000 [ 68.177039] PC is at 0x0 [ 68.179577] LR is at usb_put_function+0x14/0x1c .... BUG=chrome-os-partner:49140 TEST="setprop sys.usb.config accessory,audio_source" on A44 and then switch back to default: "setprop sys.usb.config mtp,adb", no crash will be seen. Change-Id: I5b6141964aab861e86e3afb139ded02d4d122dab Signed-off-by: Mark Kuo <mkuo@nvidia.com> Reviewed-on: https://chromium-review.googlesource.com/321013 Commit-Ready: Andrew Bresticker <abrestic@chromium.org> Tested-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Andrew Bresticker <abrestic@chromium.org> (cherry picked from commit e7264d37e1c568a25285493e3e2d6df7e5e8d731) Signed-off-by: Guenter Roeck <groeck@chromium.org>
saiprakash-ranjan
pushed a commit
to saiprakash-ranjan/linux
that referenced
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Aug 19, 2019
When userspace unbinds gadget functions through configfs, the .free_func() callback is always invoked. (in config_usb_cfg_unlink()) Implement it as a no-op to avoid the following crash: [ 68.125679] configfs-gadget gadget: unbind function 'accessory'/ffffffc0720bf000 [ 68.133202] configfs-gadget gadget: unbind function 'audio_source'/ffffffc0012ca3c0 [ 68.142668] tegra-xudc 700d0000.usb-device: ep 0 disabled [ 68.148186] Bad mode in Synchronous Abort handler detected, code 0x86000006 [ 68.155144] CPU: 2 PID: 1 Comm: init Tainted: G U W 3.18.0-09419-g87296c3-dirty torvalds#561 [ 68.163743] Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT) [ 68.169566] task: ffffffc0bc8d0000 ti: ffffffc0bc8bc000 task.ti: ffffffc0bc8bc000 [ 68.177039] PC is at 0x0 [ 68.179577] LR is at usb_put_function+0x14/0x1c .... BUG=chrome-os-partner:49140 TEST="setprop sys.usb.config accessory,audio_source" on A44 and then switch back to default: "setprop sys.usb.config mtp,adb", no crash will be seen. Change-Id: I5b6141964aab861e86e3afb139ded02d4d122dab Signed-off-by: Mark Kuo <mkuo@nvidia.com> Reviewed-on: https://chromium-review.googlesource.com/321013 Commit-Ready: Andrew Bresticker <abrestic@chromium.org> Tested-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Andrew Bresticker <abrestic@chromium.org> (cherry picked from commit e7264d37e1c568a25285493e3e2d6df7e5e8d731) Signed-off-by: Guenter Roeck <groeck@chromium.org>
derkling
pushed a commit
to derkling/linux
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Sep 14, 2019
When userspace unbinds gadget functions through configfs, the .free_func() callback is always invoked. (in config_usb_cfg_unlink()) Implement it as a no-op to avoid the following crash: [ 68.125679] configfs-gadget gadget: unbind function 'accessory'/ffffffc0720bf000 [ 68.133202] configfs-gadget gadget: unbind function 'audio_source'/ffffffc0012ca3c0 [ 68.142668] tegra-xudc 700d0000.usb-device: ep 0 disabled [ 68.148186] Bad mode in Synchronous Abort handler detected, code 0x86000006 [ 68.155144] CPU: 2 PID: 1 Comm: init Tainted: G U W 3.18.0-09419-g87296c3-dirty torvalds#561 [ 68.163743] Hardware name: Google Tegra210 Smaug Rev 1,3+ (DT) [ 68.169566] task: ffffffc0bc8d0000 ti: ffffffc0bc8bc000 task.ti: ffffffc0bc8bc000 [ 68.177039] PC is at 0x0 [ 68.179577] LR is at usb_put_function+0x14/0x1c .... BUG=chrome-os-partner:49140 TEST="setprop sys.usb.config accessory,audio_source" on A44 and then switch back to default: "setprop sys.usb.config mtp,adb", no crash will be seen. Change-Id: I5b6141964aab861e86e3afb139ded02d4d122dab Signed-off-by: Mark Kuo <mkuo@nvidia.com> Reviewed-on: https://chromium-review.googlesource.com/321013 Commit-Ready: Andrew Bresticker <abrestic@chromium.org> Tested-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
ojeda
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Nov 24, 2021
confdata: handle `S_HEX` case like the C printer
ddiss
pushed a commit
to ddiss/linux
that referenced
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Feb 14, 2025
Fix build warnings
guidosarducci
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Jul 26, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Jul 27, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Jul 30, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Jul 30, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Jul 30, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Aug 5, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Aug 9, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Aug 13, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Aug 14, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Aug 17, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Aug 19, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Aug 21, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Aug 23, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Aug 28, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Aug 29, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Sep 2, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Sep 5, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Sep 8, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Sep 10, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Sep 27, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Sep 27, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 1, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 10, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 11, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 15, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 20, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 21, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 21, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 21, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 27, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 27, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 27, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 27, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 27, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 28, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Oct 30, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 3, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 5, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 5, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 7, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 15, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 16, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 20, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 22, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 23, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 23, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 23, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 25, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
guidosarducci
added a commit
to guidosarducci/linux
that referenced
this pull request
Nov 26, 2025
This BPF assembly test accesses a struct field using a fixed offset based
on a 64-bit environment, without any debug info usable for relocation or
rewriting of accesses. This fails on 32-bit armhf:
tester_init:PASS:tester_log_buf 0 nsec
process_subtest:PASS:obj_open_mem 0 nsec
process_subtest:PASS:specs_alloc 0 nsec
run_subtest:PASS:obj_open_mem 0 nsec
libbpf: prog 'resolve_typedef': BPF program load failed: -EACCES
libbpf: prog 'resolve_typedef': failed to load: -EACCES
libbpf: failed to load object 'verifier_typedef'
run_subtest:FAIL:unexpected_load_failure unexpected error: -13 (errno 13)
VERIFIER LOG:
=============
Global function resolve_typedef() doesn't return scalar. Only those are supported.
0: R1=ctx() R10=fp0
; asm volatile (" \ @ verifier_typedef.c:12
0: (79) r1 = *(u64 *)(r1 +0)
func 'bpf_fentry_test_sinfo' arg0 has btf_id 10943 type STRUCT 'skb_shared_info'
1: R1_w=ptr_skb_shared_info()
1: (79) r2 = *(u64 *)(r1 +56)
access beyond the end of member netmem (mend:4) in struct skb_frag with off 0 size 8
processed 2 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
=============
torvalds#561/1 verifier_typedef/typedef: resolve:FAIL
torvalds#561 verifier_typedef:FAIL
Fix this by rewriting resolve_typedef() in C with explicit field references
which can be run-time patched, resulting in 32-bit appropriate code:
int resolve_typedef(unsigned long long * ctx):
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
0: (b7) r2 = 44
; int BPF_PROG(resolve_typedef, struct skb_shared_info *si)
1: (79) r1 = *(u64 *)(r1 +0)
2: (0f) r1 += r2
; volatile netmem_ref tmp __attribute__((unused)) = si->frags->netmem;
3: (61) r1 = *(u32 *)(r1 +0)
Fixes: 2597a25 ("selftests/bpf: Add test to exercise typedef walking")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
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