Since upgrading our NFS server from -6 to -8, repeatedly dumpd core, but seems (according to ps -u) to continue to run.
The gdb backtrace is: Program terminated with signal SIGSEGV, Segmentation fault. #0 0x000000017e402698 in sm_notify_1_svc () (gdb) bt #0 0x000000017e402698 in sm_notify_1_svc () #1 0x000000017e4017b5 in sm_prog_1 () #2 0x00007a090b4b29d3 in svc_getreq_common () from /usr/lib/libc.so.12 #3 0x00007a090b4b2a21 in svc_getreqset2 () from /usr/lib/libc.so.12 #4 0x00007a090b44a46f in svc_run () from /usr/lib/libc.so.12 #5 0x000000017e4029fe in main () Interestingly, two of the three core files I got so far are the exact same time (04:36) on different days.