ASAN throwing heap-buffer-overflow errors during precompilation

[Zentrik]

julia> versioninfo()
Julia Version 1.12.0-DEV.265
Commit b18d2cc704* (2024-03-28 20:41 UTC)
Build Info:
  DEBUG build
Platform Info:
  OS: Linux (x86_64-unknown-linux-gnu)
  CPU: 16 × AMD Ryzen 7 1700 Eight-Core Processor
  WORD_SIZE: 64
  LLVM: libLLVM-16.0.6 (ORCJIT, znver1)
Threads: 1 default, 0 interactive, 1 GC (on 16 virtual cores)

After building I ran ./build.sh ./tmp/test-asan binary-dist and got this error three times

==209050==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x610018bb7dc0 at pc 0x7ffff74952f1 bp 0x7ffffffea770 sp 0x7ffffffe9f30
READ of size 52 at 0x610018bb7dc0 thread T0
    #0 0x7ffff74952f0 in __interceptor_strlen.part.0 /workspace/srcdir/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:437:5
    #1 0x7fffd76491e3 in parse_string /workspace/srcdir/mpfr-4.2.1/src/strtofr.c:329
    #2 0x7fffd76491e3 in mpfr_strtofr /workspace/srcdir/mpfr-4.2.1/src/strtofr.c:958
    #3 0x7fffd6a0bd4b  (<unknown module>)
    #4 0x7fffd6a0fd7f  (<unknown module>)
    #5 0x7fffd6a180c6  (<unknown module>)
    #6 0x7fffd6a1824e  (<unknown module>)
    #7 0x7ffff34f94b7 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2994:23
    #8 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #9 0x7fffd67d63ab  (<unknown module>)
    #10 0x7ffff34d0d69 in jl_fptr_args /home/rag/Documents/Code/julia-lto-2/src/gf.c:2636:12
    #11 0x7ffff34f94b7 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2994:23
    #12 0x7ffff34f8e74 in ijl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:3001:12
    #13 0x7ffff35f17a0 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:944:18
    #14 0x7ffff35f04a7 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:893:19
    #15 0x7ffff35f6b3b in ijl_toplevel_eval /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:964:12
    #16 0x7ffff35f721b in ijl_toplevel_eval_in /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:1006:13
    #17 0x7fffdaa537aa in eval boot.jl:432
    #18 0x7fffdaa537aa in japi1_include_string_57616 loading.jl:2535
    #19 0x7ffff34d0d69 in jl_fptr_args /home/rag/Documents/Code/julia-lto-2/src/gf.c:2636:12
    #20 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #21 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #22 0x7fffd902d226 in japi1__include_57625 loading.jl:2595
    #23 0x7fffd9f7dce1 in julia_include_38465 Base.jl:559
    #24 0x7fffd9f7dea4 in jfptr_include_38466 (/home/rag/Documents/Code/julia-lto-2/contrib/asan/tmp/test-asan/asan/usr/lib/julia/sys-debug.so+0x137dea4)
    #25 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #26 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #27 0x7ffff353c6ca in jl_apply /home/rag/Documents/Code/julia-lto-2/src/julia.h:2184:12
    #28 0x7ffff353c634 in jl_f__call_latest /home/rag/Documents/Code/julia-lto-2/src/builtins.c:875:23
    #29 0x7fffd666b2b3  (<unknown module>)
    #30 0x7fffd666b3be  (<unknown module>)
    #31 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #32 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #33 0x7ffff357bc6a in jl_apply /home/rag/Documents/Code/julia-lto-2/src/julia.h:2184:12
    #34 0x7ffff357b630 in do_call /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:126:26
    #35 0x7ffff35767de in eval_value /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:223:16
    #36 0x7ffff357a1fc in eval_stmt_value /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:174:23
    #37 0x7ffff3573121 in eval_body /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:659:21
    #38 0x7ffff3575013 in jl_interpret_toplevel_thunk /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:829:21
    #39 0x7ffff35f1942 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:953:18
    #40 0x7ffff35f3f78 in jl_eval_module_expr /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:215:15
    #41 0x7ffff35edc96 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:746:27
    #42 0x7ffff35f04a7 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:893:19
    #43 0x7ffff35f6b3b in ijl_toplevel_eval /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:964:12
    #44 0x7ffff35f721b in ijl_toplevel_eval_in /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:1006:13
    #45 0x7fffdaa537aa in eval boot.jl:432
    #46 0x7fffdaa537aa in japi1_include_string_57616 loading.jl:2535
    #47 0x7ffff34d0d69 in jl_fptr_args /home/rag/Documents/Code/julia-lto-2/src/gf.c:2636:12
    #48 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #49 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #50 0x7fffd902d226 in japi1__include_57625 loading.jl:2595
    #51 0x7fffd95f3dd4 in include Base.jl:559
    #52 0x7fffd95f3dd4 in julia_include_package_for_output_57695 loading.jl:2713
    #53 0x7fffd95f72fa in jfptr_include_package_for_output_57696 (/home/rag/Documents/Code/julia-lto-2/contrib/asan/tmp/test-asan/asan/usr/lib/julia/sys-debug.so+0x9f72fa)
    #54 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #55 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #56 0x7ffff357bc6a in jl_apply /home/rag/Documents/Code/julia-lto-2/src/julia.h:2184:12
    #57 0x7ffff357b630 in do_call /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:126:26
    #58 0x7ffff35767de in eval_value /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:223:16
    #59 0x7ffff357a1fc in eval_stmt_value /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:174:23
    #60 0x7ffff3573121 in eval_body /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:659:21
    #61 0x7ffff3575013 in jl_interpret_toplevel_thunk /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:829:21
    #62 0x7ffff35f1942 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:953:18
    #63 0x7ffff35f04a7 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:893:19
    #64 0x7ffff35f6b3b in ijl_toplevel_eval /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:964:12
    #65 0x7ffff35f721b in ijl_toplevel_eval_in /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:1006:13
    #66 0x7fffdaa537aa in eval boot.jl:432
    #67 0x7fffdaa537aa in japi1_include_string_57616 loading.jl:2535
    #68 0x7fffd9e247e7 in include_string loading.jl:2545
    #69 0x7fffd9e247e7 in julia_exec_options_58891 client.jl:255
    #70 0x7fffdaabba54 in julia__start_59044 client.jl:533
    #71 0x7fffd9e1dd97 in jfptr__start_59045 (/home/rag/Documents/Code/julia-lto-2/contrib/asan/tmp/test-asan/asan/usr/lib/julia/sys-debug.so+0x121dd97)
    #72 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #73 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #74 0x7ffff36b41da in jl_apply /home/rag/Documents/Code/julia-lto-2/src/julia.h:2184:12
    #75 0x7ffff36b7efc in true_main /home/rag/Documents/Code/julia-lto-2/src/jlapi.c:900:29
    #76 0x7ffff36b793e in jl_repl_entrypoint /home/rag/Documents/Code/julia-lto-2/src/jlapi.c:1059:15
    #77 0x7ffff73c7702 in jl_load_repl /home/rag/Documents/Code/julia-lto-2/cli/loader_lib.c:569:12

0x610018bb7dc0 is located 0 bytes after 128-byte region [0x610018bb7d40,0x610018bb7dc0)
allocated by thread T0 here:
    #0 0x7ffff754a94c in __interceptor_posix_memalign /workspace/srcdir/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:145:3
    #1 0x7ffff367b810 in jl_malloc_aligned /home/rag/Documents/Code/julia-lto-2/src/gc.c:253:9
    #2 0x7ffff36666ca in jl_gc_big_alloc_inner /home/rag/Documents/Code/julia-lto-2/src/gc.c:1017:30
    #3 0x7ffff36665cc in ijl_gc_big_alloc /home/rag/Documents/Code/julia-lto-2/src/gc.c:1038:23
    #4 0x7ffff3667ed9 in jl_gc_pool_alloc_inner /home/rag/Documents/Code/julia-lto-2/src/gc.c:1317:12
    #5 0x7ffff3667f50 in jl_gc_pool_alloc_noinline /home/rag/Documents/Code/julia-lto-2/src/gc.c:1386:12
    #6 0x7ffff3666518 in jl_gc_alloc_ /home/rag/Documents/Code/julia-lto-2/src/julia_internal.h:505:13
    #7 0x7ffff3679574 in jl_gc_alloc /home/rag/Documents/Code/julia-lto-2/src/gc.c:3976:12
    #8 0x7ffff3598803 in _new_genericmemory_ /home/rag/Documents/Code/julia-lto-2/src/genericmemory.c:56:30
    #9 0x7ffff3599123 in jl_alloc_genericmemory /home/rag/Documents/Code/julia-lto-2/src/genericmemory.c:99:12
    #10 0x7fffd67e5468  (<unknown module>)
    #11 0x7fffd67e59d6  (<unknown module>)
    #12 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #13 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #14 0x7fffd67d532d  (<unknown module>)
    #15 0x7ffff34d0d69 in jl_fptr_args /home/rag/Documents/Code/julia-lto-2/src/gf.c:2636:12
    #16 0x7ffff34f94b7 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2994:23
    #17 0x7ffff34f8e74 in ijl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:3001:12
    #18 0x7ffff35f17a0 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:944:18
    #19 0x7ffff35f04a7 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:893:19
    #20 0x7ffff35f6b3b in ijl_toplevel_eval /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:964:12
    #21 0x7ffff35f721b in ijl_toplevel_eval_in /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:1006:13
    #22 0x7fffdaa537aa in eval boot.jl:432
    #23 0x7fffdaa537aa in japi1_include_string_57616 loading.jl:2535
    #24 0x7ffff34d0d69 in jl_fptr_args /home/rag/Documents/Code/julia-lto-2/src/gf.c:2636:12
    #25 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #26 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #27 0x7fffd902d226 in japi1__include_57625 loading.jl:2595
    #28 0x7fffd9f7dce1 in julia_include_38465 Base.jl:559
    #29 0x7fffd9f7dea4 in jfptr_include_38466 (/home/rag/Documents/Code/julia-lto-2/contrib/asan/tmp/test-asan/asan/usr/lib/julia/sys-debug.so+0x137dea4)
    #30 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35

SUMMARY: AddressSanitizer: heap-buffer-overflow /workspace/srcdir/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:437:5 in __interceptor_strlen.part.0
Shadow bytes around the buggy address:
  0x610018bb7b00: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
  0x610018bb7b80: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
  0x610018bb7c00: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
  0x610018bb7c80: 00 00 00 00 00 00 00 00 fa fa fa fa fa fa fa fa
  0x610018bb7d00: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
=>0x610018bb7d80: 00 00 00 00 00 00 00 00[fa]fa fa fa fa fa fa fa
  0x610018bb7e00: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
  0x610018bb7e80: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
  0x610018bb7f00: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
  0x610018bb7f80: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
  0x610018bb8000: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==209050==ABORTING

Running binary-dist on CI segfaulted but ASAN didn't print any info, https://buildkite.com/julialang/julia-buildkite/builds/1482#018e7d5d-3b05-4e40-aa4a-dd931b9eceeb.
I'm running with ASLR disabled as otherwise I was having trouble building.
Both CI and locally the warning WARNING: using mismatched version for sanitizers: was printed, not sure if that affects anything.

Full log is here.

[giordano]

Should that be reported to mpfr? Does it happen before 61caaa8?

[Zentrik]

Yes I'm getting a similar error on 944f180.
I think the only thing that changed is now it's a read of size 49 and it was only repeated twice

==270359==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x61000f891cc0 at pc 0x7ffff74952f1 bp 0x7ffffffea320 sp 0x7ffffffe9ae0
READ of size 50 at 0x61000f891cc0 thread T0
    #0 0x7ffff74952f0 in __interceptor_strlen.part.0 /workspace/srcdir/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:437:5
    #1 0x7fffd7649117 in parse_string /workspace/srcdir/mpfr-4.2.0/src/strtofr.c:326
    #2 0x7fffd7649117 in mpfr_strtofr /workspace/srcdir/mpfr-4.2.0/src/strtofr.c:952
    #3 0x7fffd6a0bd4b  (<unknown module>)
    #4 0x7fffd6a0fd7f  (<unknown module>)
    #5 0x7fffd6a180c6  (<unknown module>)
    #6 0x7fffd6a1824e  (<unknown module>)
    #7 0x7ffff34f94b7 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2994:23
    #8 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #9 0x7fffd67d63ab  (<unknown module>)
    #10 0x7ffff34d0d69 in jl_fptr_args /home/rag/Documents/Code/julia-lto-2/src/gf.c:2636:12
    #11 0x7ffff34f94b7 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2994:23
    #12 0x7ffff34f8e74 in ijl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:3001:12
    #13 0x7ffff35f12c0 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:944:18
    #14 0x7ffff35effc7 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:893:19
    #15 0x7ffff35f665b in ijl_toplevel_eval /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:964:12
    #16 0x7ffff35f6d3b in ijl_toplevel_eval_in /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:1006:13
    #17 0x7fffd93dd474 in eval boot.jl:432
    #18 0x7fffd93dd474 in japi1_include_string_57580 loading.jl:2535
    #19 0x7ffff34d0d69 in jl_fptr_args /home/rag/Documents/Code/julia-lto-2/src/gf.c:2636:12
    #20 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #21 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #22 0x7fffd9c575d1 in japi1__include_57589 loading.jl:2595
    #23 0x7fffd96df3c1 in julia_include_38425 Base.jl:559
    #24 0x7fffda747614 in jfptr_include_38426 (/home/rag/Documents/Code/julia-lto-2/contrib/asan/tmp/test-asan/asan/usr/lib/julia/sys-debug.so+0x1b47614)
    #25 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #26 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #27 0x7ffff353c60a in jl_apply /home/rag/Documents/Code/julia-lto-2/src/julia.h:2184:12
    #28 0x7ffff353c574 in jl_f__call_latest /home/rag/Documents/Code/julia-lto-2/src/builtins.c:875:23
    #29 0x7fffd666b2b3  (<unknown module>)
    #30 0x7fffd666b3be  (<unknown module>)
    #31 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #32 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #33 0x7ffff357b78a in jl_apply /home/rag/Documents/Code/julia-lto-2/src/julia.h:2184:12
    #34 0x7ffff357b150 in do_call /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:126:26
    #35 0x7ffff35762fe in eval_value /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:223:16
    #36 0x7ffff3579d1c in eval_stmt_value /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:174:23
    #37 0x7ffff3573061 in eval_body /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:659:21
    #38 0x7ffff3574b33 in jl_interpret_toplevel_thunk /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:817:21
    #39 0x7ffff35f1462 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:953:18
    #40 0x7ffff35f3a98 in jl_eval_module_expr /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:215:15
    #41 0x7ffff35ed7b6 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:746:27
    #42 0x7ffff35effc7 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:893:19
    #43 0x7ffff35f665b in ijl_toplevel_eval /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:964:12
    #44 0x7ffff35f6d3b in ijl_toplevel_eval_in /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:1006:13
    #45 0x7fffd93dd474 in eval boot.jl:432
    #46 0x7fffd93dd474 in japi1_include_string_57580 loading.jl:2535
    #47 0x7ffff34d0d69 in jl_fptr_args /home/rag/Documents/Code/julia-lto-2/src/gf.c:2636:12
    #48 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #49 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #50 0x7fffd9c575d1 in japi1__include_57589 loading.jl:2595
    #51 0x7fffd9618ca9 in include Base.jl:559
    #52 0x7fffd9618ca9 in julia_include_package_for_output_57659 loading.jl:2713
    #53 0x7fffda698bea in jfptr_include_package_for_output_57660 (/home/rag/Documents/Code/julia-lto-2/contrib/asan/tmp/test-asan/asan/usr/lib/julia/sys-debug.so+0x1a98bea)
    #54 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #55 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #56 0x7ffff357b78a in jl_apply /home/rag/Documents/Code/julia-lto-2/src/julia.h:2184:12
    #57 0x7ffff357b150 in do_call /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:126:26
    #58 0x7ffff35762fe in eval_value /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:223:16
    #59 0x7ffff3579d1c in eval_stmt_value /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:174:23
    #60 0x7ffff3573061 in eval_body /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:659:21
    #61 0x7ffff3574b33 in jl_interpret_toplevel_thunk /home/rag/Documents/Code/julia-lto-2/src/interpreter.c:817:21
    #62 0x7ffff35f1462 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:953:18
    #63 0x7ffff35effc7 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:893:19
    #64 0x7ffff35f665b in ijl_toplevel_eval /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:964:12
    #65 0x7ffff35f6d3b in ijl_toplevel_eval_in /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:1006:13
    #66 0x7fffd93dd474 in eval boot.jl:432
    #67 0x7fffd93dd474 in japi1_include_string_57580 loading.jl:2535
    #68 0x7fffda6a189e in include_string loading.jl:2545
    #69 0x7fffda6a189e in julia_exec_options_58855 client.jl:255
    #70 0x7fffd91cee4f in julia__start_59008 client.jl:533
    #71 0x7fffda264767 in jfptr__start_59009 (/home/rag/Documents/Code/julia-lto-2/contrib/asan/tmp/test-asan/asan/usr/lib/julia/sys-debug.so+0x1664767)
    #72 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #73 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #74 0x7ffff36b3cfa in jl_apply /home/rag/Documents/Code/julia-lto-2/src/julia.h:2184:12
    #75 0x7ffff36b7a1c in true_main /home/rag/Documents/Code/julia-lto-2/src/jlapi.c:900:29
    #76 0x7ffff36b745e in jl_repl_entrypoint /home/rag/Documents/Code/julia-lto-2/src/jlapi.c:1059:15
    #77 0x7ffff73c7702 in jl_load_repl /home/rag/Documents/Code/julia-lto-2/cli/loader_lib.c:569:12

0x61000f891cc0 is located 0 bytes after 128-byte region [0x61000f891c40,0x61000f891cc0)
allocated by thread T0 here:
    #0 0x7ffff754a94c in __interceptor_posix_memalign /workspace/srcdir/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:145:3
    #1 0x7ffff367b330 in jl_malloc_aligned /home/rag/Documents/Code/julia-lto-2/src/gc.c:253:9
    #2 0x7ffff36661ea in jl_gc_big_alloc_inner /home/rag/Documents/Code/julia-lto-2/src/gc.c:1017:30
    #3 0x7ffff36660ec in ijl_gc_big_alloc /home/rag/Documents/Code/julia-lto-2/src/gc.c:1038:23
    #4 0x7ffff36679f9 in jl_gc_pool_alloc_inner /home/rag/Documents/Code/julia-lto-2/src/gc.c:1317:12
    #5 0x7ffff3667a70 in jl_gc_pool_alloc_noinline /home/rag/Documents/Code/julia-lto-2/src/gc.c:1386:12
    #6 0x7ffff3666038 in jl_gc_alloc_ /home/rag/Documents/Code/julia-lto-2/src/julia_internal.h:505:13
    #7 0x7ffff3679094 in jl_gc_alloc /home/rag/Documents/Code/julia-lto-2/src/gc.c:3976:12
    #8 0x7ffff3598323 in _new_genericmemory_ /home/rag/Documents/Code/julia-lto-2/src/genericmemory.c:56:30
    #9 0x7ffff3598c43 in jl_alloc_genericmemory /home/rag/Documents/Code/julia-lto-2/src/genericmemory.c:99:12
    #10 0x7fffd67e5468  (<unknown module>)
    #11 0x7fffd67e59d6  (<unknown module>)
    #12 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #13 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #14 0x7fffd67d532d  (<unknown module>)
    #15 0x7ffff34d0d69 in jl_fptr_args /home/rag/Documents/Code/julia-lto-2/src/gf.c:2636:12
    #16 0x7ffff34f94b7 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2994:23
    #17 0x7ffff34f8e74 in ijl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:3001:12
    #18 0x7ffff35f12c0 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:944:18
    #19 0x7ffff35effc7 in jl_toplevel_eval_flex /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:893:19
    #20 0x7ffff35f665b in ijl_toplevel_eval /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:964:12
    #21 0x7ffff35f6d3b in ijl_toplevel_eval_in /home/rag/Documents/Code/julia-lto-2/src/toplevel.c:1006:13
    #22 0x7fffd93dd474 in eval boot.jl:432
    #23 0x7fffd93dd474 in japi1_include_string_57580 loading.jl:2535
    #24 0x7ffff34d0d69 in jl_fptr_args /home/rag/Documents/Code/julia-lto-2/src/gf.c:2636:12
    #25 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35
    #26 0x7ffff34f964b in ijl_apply_generic /home/rag/Documents/Code/julia-lto-2/src/gf.c:3171:12
    #27 0x7fffd9c575d1 in japi1__include_57589 loading.jl:2595
    #28 0x7fffd96df3c1 in julia_include_38425 Base.jl:559
    #29 0x7fffda747614 in jfptr_include_38426 (/home/rag/Documents/Code/julia-lto-2/contrib/asan/tmp/test-asan/asan/usr/lib/julia/sys-debug.so+0x1b47614)
    #30 0x7ffff34f91c6 in _jl_invoke /home/rag/Documents/Code/julia-lto-2/src/gf.c:2975:35

SUMMARY: AddressSanitizer: heap-buffer-overflow /workspace/srcdir/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:437:5 in __interceptor_strlen.part.0
Shadow bytes around the buggy address:
  0x61000f891a00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x61000f891a80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x61000f891b00: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
  0x61000f891b80: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
  0x61000f891c00: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
=>0x61000f891c80: 00 00 00 00 00 00 00 00[fa]fa fa fa fa fa fa fa
  0x61000f891d00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x61000f891d80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x61000f891e00: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
  0x61000f891e80: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
  0x61000f891f00: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==270359==ABORTING

[Zentrik]

Didn't have an issue on 5cb0e51 which should be MPFR 4.2.0.

[Zentrik]

Bisected to #47105 and specifically it's the bump to Parsers to v2.8.0 from 2.4.0.
Bisecting Parsers I narrowed it down to JuliaData/Parsers.jl@504dfdf, that code does add a call to mpfr_strtofr which is the function triggering ASAN so it might not be a Julia issue.