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VIDA-NYU / reprozip

ReproZip is a tool that simplifies the process of creating reproducible experiments from command-line executions, a frequently-used common denominator in computational science.
https://www.reprozip.org/
BSD 3-Clause "New" or "Revised" License
303 stars 33 forks source link

Input/output error on PTRACE_PEEKDATA on recent kernels #393

Open remram44 opened 1 year ago

remram44 commented 1 year ago

In some situations, PTRACE_PEEKDATA returns Input/output error (errno=EIO).

This should be investigated and defended against.

remram44 commented 1 year ago

Found this thread: https://lkml.iu.edu/hypermail/linux/kernel/1712.2/04964.html

Initial testing shows that this is a problem on Linux 6.2.0-26-generic and 5.4.0-110-generic

remram44 commented 1 year ago

Might be an issue of missing CAP_SYS_PTRACE in containers, have to re-test.

remram44 commented 1 year ago

This doesn't happen if you're root and have CAP_SYS_PTRACE (which is not the default in containers). I see it happening on GitHub Actions, have to investigate.