While developing eBPF programs, I noticed that kretprobes attached to some kernel functions do not survive to suspend/resume cycle (NB: I didn't try with hibernation). I confirmed the issue on the following kernels: 6.6.26-lts, 6.6.28-lts, 5.4.0-153 (just for testing as I had such an old kernel). Steps to reproduce the issue (require bpftrace): 1) sudo bpftrace -e 'kretprobe:__sys_recvmsg { printf("%s\n", comm); }' 2) systemctl suspend 3) Resume 4) see that nothing gets printed anymore on stdout It seems other functions suffer from the same issues (i.e. *_recvmsg) however it is hard for me to tell if there are others, as I didn't make the test for all kernel functions and I was not able to understand why those are impacted. The expected behavior, based on other kretprobes, is actually to survive to a suspend/resume cycle. NB: this is not a bpftrace issue as I just used bpftrace to reproduce the issue I was observing while developing my eBPF program (completely non related to bpftrace).