ptrace: Do not pass a negative resid to proc_rwmem()
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Authored by markj on Mar 23 2025, 10:36 PM.

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rG74a0b8908483: ptrace: Do not pass a negative resid to proc_rwmem()
rG1a80a157cbe8: ptrace: Do not pass a negative resid to proc_rwmem()

Summary

uiomove() asserts against this.

proc_iop() already asserts this, but maybe it should be a runtime check.

While here, avoid truncting uio_resid in proc_rwmem().

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rG FreeBSD src repository

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Event Timeline

markj created this revision.Mar 23 2025, 10:36 PM

Herald added subscribers: olce, imp. · View Herald TranscriptMar 23 2025, 10:36 PM

markj requested review of this revision.Mar 23 2025, 10:36 PM

Harbormaster completed remote builds in B63086: Diff 152578.Mar 23 2025, 10:36 PM

kib accepted this revision.Mar 24 2025, 1:32 AM

This revision is now accepted and ready to land.Mar 24 2025, 1:32 AM

Closed by commit rG1a80a157cbe8: ptrace: Do not pass a negative resid to proc_rwmem() (authored by markj). · Explain WhyMar 31 2025, 9:06 AM

This revision was automatically updated to reflect the committed changes.

markj added a commit: rG1a80a157cbe8: ptrace: Do not pass a negative resid to proc_rwmem().

markj added a commit: rG74a0b8908483: ptrace: Do not pass a negative resid to proc_rwmem().Apr 15 2025, 2:26 AM

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sys/

kern/

sys_process.c

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ptrace: Do not pass a negative resid to proc_rwmem()ClosedPublicActions