Linux kernel keeps logging segfaults in ring buffer.a.out[25415]: segfault at 8049604 ip 08049604 sp bf88e3fc error 15 in a.out[8049000+1000]Is there a way to temporarily disable it?  My usecase is that I'm running a testsuite that does all sorts of crazy things and I don't want to see segfaults in dmesg from that time period.  dmesg -c is not an option because the test framework I'm forced to use is analyzing dmesg output and I cannot just clear it in the middle.I was going through sysctl -a output if there's some kernel parameter, but I don't see anything that appears to be useful. kernel.print-fatal-signals looked promising but it's just for showing more detailed info.
Is there a way to temporarily disable segfault messages in dmesg?
linux kernel;segmentation fault;dmesg
Okay, I eventually found it.  It's called debug.exception-trace.sysctl -w debug.exception-trace=0 or echo 0 > /proc/sys/debug/exception-trace will turn it off.# dmesg -c# dmesg# echo 'main;' | gcc -xc - && ./a.out<stdin>:1:1: warning: data definition has no type or storage classSegmentation fault# dmesg[  539.421736] a.out[1875]: segfault at 600874 ip 0000000000600874 sp 00007ffed85e7018 error 15 in a.out[600000+1000]# sysctl debug.exception-tracedebug.exception-trace = 1 # ./a.out Segmentation fault# dmesg[  539.421736] a.out[1875]: segfault at 600874 ip 0000000000600874 sp 00007ffed85e7018 error 15 in a.out[600000+1000][  584.492171] a.out[1878]: segfault at 600874 ip 0000000000600874 sp 00007ffc6b0d2358 error 15 in a.out[600000+1000]# sysctl -w debug.exception-trace=0debug.exception-trace = 0 # ./a.out Segmentation fault# dmesg[  539.421736] a.out[1875]: segfault at 600874 ip 0000000000600874 sp 00007ffed85e7018 error 15 in a.out[600000+1000][  584.492171] a.out[1878]: segfault at 600874 ip 0000000000600874 sp 00007ffc6b0d2358 error 15 in a.out[600000+1000]The last segfault is not logged.