crashinfo issue in HEAD

[Andriy Gapon]

I had a panic (provoked via sw watchdog, nothing exciting) and after reboot I
noticed that couple of processes dumped core, apparently while running as part of
crashinfo procedure.

savecore: reboot after panic: watchdog timeout
savecore: writing core to vmcore.0
kernel: pid 725 (ps), uid 0: exited on signal 11 (core dumped)
kernel: pid 742 (fstat), uid 0: exited on signal 11

core.0.txt accordingly has:
------------------------------------------------------------------------
ps -axl
Segmentation fault (core dumped)
------------------------------------------------------------------------
fstat
Segmentation fault
------------------------------------------------------------------------

The world doesn't have debug symbols, so gdb doesn't produce much.
Still, it  gives some insights:
ps:
#0  0x0000000800959df6 in bcopy () from /lib/libc.so.7
#1  0x000000080076f11c in _kvm_freeprocs () from /lib/libkvm.so.5
#2  0x000000080076f830 in kvm_getprocs () from /lib/libkvm.so.5
#3  0x0000000000405273 in uname ()

core size is about 1G.

I couldn't find fstat core file.

-- 
Andriy Gapon