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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.
Linux Kernel: 6.6.28-lts Attach point: ___sys_recvmsg, ____sys_recvmsg and sock_recvmsg
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 !
IDK maybe @dave-tucker or @alessandrod have ideas ?
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.
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: