I'm trying to discover why some of my processes are being mysteriously killed by SIGINT (I'm not pressing CTRL + C ). I tried using strace in a process that's receiving the SIGINT "attack" and after some time I got the attack with the following info:
> strace -p 61571 -e trace=signal
strace: Process 61571 attached
--- SIGINT {si_signo=SIGINT, si_code=SI_USER, si_pid=0, si_uid=0} ---
+++ killed by SIGINT +++
I see that SI_USER can mean signal sent by kill, sigsend, raise or abort. Irrelevant info for me, correct?
What about si_pid and si_uid being set to 0? What does zero mean for these properties? The value of SI_USER seems to be zero. Was everything just zero-initialized?
Please let me know if more info is needed.