Add an empty /proc/modules to procfs. - #14134
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It's my understanding that Linux exposes `/proc/modules` empty in most configurations (it's possible to not expose modules but that seems rare; only if the kernel is compile with that configuration). Some applications like NVIDIA's GPUDirect Storage libraries (libcufile) will scan `/proc/modules`. However, under gVisor, the scan never succeeds and will hang forever.
EtiennePerot
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Aug 14, 2026
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It's my understanding that Linux exposes `/proc/modules` empty in most configurations (it's possible to not expose modules but that seems rare; only if the kernel is compile with that configuration). Some applications like NVIDIA's GPUDirect Storage libraries (libcufile) will scan `/proc/modules`. However, if `/proc/modules` isn't available, applications will hang forever. This PR adds `/proc/modules` as an empty file to all Sandboxes. This was already possible with `--override-procs=module`, but I think that having it be available everywhere is more reasonable than optionally adding it in some configurations. FUTURE_COPYBARA_INTEGRATE_REVIEW=#14134 from luiscape:luis/expose-empty-proc-modules e0efc73 PiperOrigin-RevId: 964963099
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It's my understanding that Linux exposes `/proc/modules` empty in most configurations (it's possible to not expose modules but that seems rare; only if the kernel is compile with that configuration). Some applications like NVIDIA's GPUDirect Storage libraries (libcufile) will scan `/proc/modules`. However, if `/proc/modules` isn't available, applications will hang forever. This PR adds `/proc/modules` as an empty file to all Sandboxes. This was already possible with `--override-procs=module`, but I think that having it be available everywhere is more reasonable than optionally adding it in some configurations. FUTURE_COPYBARA_INTEGRATE_REVIEW=#14134 from luiscape:luis/expose-empty-proc-modules e0efc73 PiperOrigin-RevId: 964963099
copybara-service Bot
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Aug 17, 2026
It's my understanding that Linux exposes `/proc/modules` empty in most configurations (it's possible to not expose modules but that seems rare; only if the kernel is compile with that configuration). Some applications like NVIDIA's GPUDirect Storage libraries (libcufile) will scan `/proc/modules`. However, if `/proc/modules` isn't available, applications will hang forever. This PR adds `/proc/modules` as an empty file to all Sandboxes. This was already possible with `--override-procs=module`, but I think that having it be available everywhere is more reasonable than optionally adding it in some configurations. FUTURE_COPYBARA_INTEGRATE_REVIEW=#14134 from luiscape:luis/expose-empty-proc-modules e0efc73 PiperOrigin-RevId: 964963099
copybara-service Bot
pushed a commit
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Aug 17, 2026
It's my understanding that Linux exposes `/proc/modules` empty in most configurations (it's possible to not expose modules but that seems rare; only if the kernel is compile with that configuration). Some applications like NVIDIA's GPUDirect Storage libraries (libcufile) will scan `/proc/modules`. However, if `/proc/modules` isn't available, applications will hang forever. This PR adds `/proc/modules` as an empty file to all Sandboxes. This was already possible with `--override-procs=module`, but I think that having it be available everywhere is more reasonable than optionally adding it in some configurations. FUTURE_COPYBARA_INTEGRATE_REVIEW=#14134 from luiscape:luis/expose-empty-proc-modules e0efc73 PiperOrigin-RevId: 964963099
copybara-service Bot
pushed a commit
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Aug 17, 2026
It's my understanding that Linux exposes `/proc/modules` empty in most configurations (it's possible to not expose modules but that seems rare; only if the kernel is compile with that configuration). Some applications like NVIDIA's GPUDirect Storage libraries (libcufile) will scan `/proc/modules`. However, if `/proc/modules` isn't available, applications will hang forever. This PR adds `/proc/modules` as an empty file to all Sandboxes. This was already possible with `--override-procs=module`, but I think that having it be available everywhere is more reasonable than optionally adding it in some configurations. FUTURE_COPYBARA_INTEGRATE_REVIEW=#14134 from luiscape:luis/expose-empty-proc-modules e0efc73 PiperOrigin-RevId: 964963099
copybara-service Bot
pushed a commit
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Aug 17, 2026
It's my understanding that Linux exposes `/proc/modules` empty in most configurations (it's possible to not expose modules but that seems rare; only if the kernel is compile with that configuration). Some applications like NVIDIA's GPUDirect Storage libraries (libcufile) will scan `/proc/modules`. However, if `/proc/modules` isn't available, applications will hang forever. This PR adds `/proc/modules` as an empty file to all Sandboxes. This was already possible with `--override-procs=module`, but I think that having it be available everywhere is more reasonable than optionally adding it in some configurations. FUTURE_COPYBARA_INTEGRATE_REVIEW=#14134 from luiscape:luis/expose-empty-proc-modules e0efc73 PiperOrigin-RevId: 964963099
copybara-service Bot
pushed a commit
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Aug 19, 2026
It's my understanding that Linux exposes `/proc/modules` empty in most configurations (it's possible to not expose modules but that seems rare; only if the kernel is compile with that configuration). Some applications like NVIDIA's GPUDirect Storage libraries (libcufile) will scan `/proc/modules`. However, if `/proc/modules` isn't available, applications will hang forever. This PR adds `/proc/modules` as an empty file to all Sandboxes. This was already possible with `--override-procs=module`, but I think that having it be available everywhere is more reasonable than optionally adding it in some configurations. FUTURE_COPYBARA_INTEGRATE_REVIEW=#14134 from luiscape:luis/expose-empty-proc-modules e0efc73 PiperOrigin-RevId: 964963099
copybara-service Bot
pushed a commit
that referenced
this pull request
Aug 19, 2026
It's my understanding that Linux exposes `/proc/modules` empty in most configurations (it's possible to not expose modules but that seems rare; only if the kernel is compile with that configuration). Some applications like NVIDIA's GPUDirect Storage libraries (libcufile) will scan `/proc/modules`. However, if `/proc/modules` isn't available, applications will hang forever. This PR adds `/proc/modules` as an empty file to all Sandboxes. This was already possible with `--override-procs=module`, but I think that having it be available everywhere is more reasonable than optionally adding it in some configurations. FUTURE_COPYBARA_INTEGRATE_REVIEW=#14134 from luiscape:luis/expose-empty-proc-modules e0efc73 PiperOrigin-RevId: 964963099
copybara-service Bot
pushed a commit
that referenced
this pull request
Aug 19, 2026
It's my understanding that Linux exposes `/proc/modules` empty in most configurations (it's possible to not expose modules but that seems rare; only if the kernel is compile with that configuration). Some applications like NVIDIA's GPUDirect Storage libraries (libcufile) will scan `/proc/modules`. However, if `/proc/modules` isn't available, applications will hang forever. This PR adds `/proc/modules` as an empty file to all Sandboxes. This was already possible with `--override-procs=module`, but I think that having it be available everywhere is more reasonable than optionally adding it in some configurations. FUTURE_COPYBARA_INTEGRATE_REVIEW=#14134 from luiscape:luis/expose-empty-proc-modules e0efc73 PiperOrigin-RevId: 964963099
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It's my understanding that Linux exposes
/proc/modulesempty in most configurations (it's possible to not expose modules but that seems rare; only if the kernel is compile with that configuration).Some applications like NVIDIA's GPUDirect Storage libraries (libcufile) will scan
/proc/modules. However, if/proc/modulesisn't available, applications will hang forever.This PR adds
/proc/modulesas an empty file to all Sandboxes. This was already possible with--override-procs=module, but I think that having it be available everywhere is more reasonable than optionally adding it in some configurations.