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Bug on system suspend #932
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Similar behavior has been observed for Linux Kernel: 6.6.28-lts I spent several hours trying to find more about this issue but I really have no inspiration to find where this comes from exactly ... I really want to find what happens here but lacking inspiration ! I am currently thinking that to fix this I should actually add a probe to system resume and actually reload the program on resume ! But it would just fix the symptom, not the root cause. cc: @vadorovsky |
Minimal repro code for the issue:
|
The issue is very likely located in Linux Kernel, an bug report as been filled and can be tracked at https://bugzilla.kernel.org/show_bug.cgi?id=218775 |
Linux Kernel: 6.6.25-1-lts
I came across a very strange issue, which may not be caused by Aya but may be solvable in Aya.
Issue description: I noticed that when a
kretprobe
is attached to__sys_recvmsg
and the system is suspended (in RAM) the probe stops working when the system resumes. It is yet impossible for me to explain this behavior.Steps to reproduce:
__sys_recvmsg
kernel function (___sys_recvmsg
also suffers from the same issue)sudo bpftool prog profile tag $PROG_TAG duration 5 cycles
and observe the result, you should see non null values.systemctl suspend
sudo bpftool prog profile tag $PROG_TAG duration 5 cycles
, you should see all zeros (that's what I see) even though the program is still alive.The text was updated successfully, but these errors were encountered: