V Wed, Jan 31, 2024 at 11:08:16AM +0100, Milan Crha napsal(a): > Hi, > I tried to investigate a rawhide bug: > https://bugzilla.redhat.com/show_bug.cgi?id=2253099 > which is about Evolution being killed "by something". That's the thing, > I do not know what killed it, thus even why it had been killed. It's > even not killed after certain steps, it's killed "randomly", on various > occasions. > > I did search the internet, but they usually expect the killer is the > OOM service, which logs about the action either in the dmesg or in the > journal, but in this case there is no sign about whom killed it in > either of these logs. > This procedure works for me <https://stackoverflow.com/questions/2827877/tracing-unix-signal-origins>. The tracefs file system has a nice log. An example of /usr/bin/sleep receiving SIGKILL from bash: root@fedora-40:/sys/kernel/debug/tracing # cat trace # tracer: nop # # entries-in-buffer/entries-written: 1/1 #P:4 # # _-----=> irqs-off/BH-disabled # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / _-=> migrate-disable # |||| / delay # TASK-PID CPU# ||||| TIMESTAMP FUNCTION # | | | ||||| | | bash-4867 [002] d..1. 10571.864270: signal_generate: sig=9 errno=0 code=0 comm=sleep pid=4866 grp=1 res=0 -- Petr
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