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#1 2018-09-20 02:17:09
- super_trash
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- Registered: 2018-07-04
- Posts: 50
error when reading /proc/28850/stack: operation not permitted
I got this error when trying to run a command in a zsh script that would check /proc/$var/stack in a subshell
$(</proc/$var/stack) = *tty_read*
But seem I don't have permission to read on /proc. What should I do to have it run probably? Meanwhile I'm superuser in the system. I doubt that I have to modify kernel parameter about audit or something to lose the rope.
Last edited by super_trash (2018-09-20 02:18:15)
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#2 2018-09-20 02:22:50
- super_trash
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- Registered: 2018-07-04
- Posts: 50
Re: error when reading /proc/28850/stack: operation not permitted
Passing kernel parameter "audit=0" to /boot/loader/entries/arch.conf doesn't work.
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#3 2018-09-20 06:57:35
- seth
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- Registered: 2012-09-03
- Posts: 78,840
Re: error when reading /proc/28850/stack: operation not permitted
Please do not bump, but edit your posts.
echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scopeYou can access the stack as the PID owning user afterwards.
And remove the "audit=0" token again.
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