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kern/47012: "shutdown now" from multiuser causes kernel panic (-current)
>Synopsis: "shutdown now" from multiuser causes kernel panic (-current)
>Arrival-Date: Thu Sep 27 19:05:00 +0000 2012
>Release: NetBSD current, cvs update finished Sep 25 00:46 CEST
System: NetBSD radl.falu.nl 5.1 NetBSD 6.99.something GENERIC
I used a self-compiled GENERIC amd64 kernel from a "cvs update"
as of Sep 25 00:46 CEST.
The userland was from amd64/5.1.
From multi-user, issue the command "shutdown now".
After most of the procedure has completed, the here is an
assertion failure followed by a crash dump.
(I didn't recover the dump).
The first time it happened I was in X when I issued the shutdown
command. I could repeat it even when first shutting down X
(/etc/rc.d/xdm stop), then doing the shutdown from a text console.
Thu Sep 27 20:44:51 CEST 2012
Done running shutdown hooks.
panic: kernel diagnostic assertion "lwpcnt >= 0" failed: file
"/mnt/vol1/rhialto/cvs/src/sys/kern/kern_uidinfo.c", line 217
cpu0: Begin traceback...
kern_assert() at netbsd:kern_assert+0x48
chglwpcnt() at netbsd:chglwpcnt+0x56
lwp_free() at netbsd:lwp_free+0x66
lwp_wait1() at netbsd:lwp_wait1+0x240
exit_lwps() at netbsd:exit_lwps+0x108
exit1() at netbsd:exit1+0x6a
sigexit() at netbsd:sigexit+0x14b
postsig() at netbsd:postsig+0x15d
lwp_userret() at netbsd:lwp_userret+0x19b
syscall() at netbsd:syscall+0x157
--- syscall (number 0) ---
cpu0: End traceback...
dumping to dev 0,1 (offset=199775, size=1023726):
dump 3998 3997 3996 3995 3994 3993 3992 3991 3990 3989 ...
When repeating it just now, it is "cpu1" and the dump freezes at
3984. That may be a coincidence.
Unknown so far.
___ Olaf 'Rhialto' Seibert -- There's no point being grown-up if you
\X/ rhialto/at/xs4all.nl -- can't be childish sometimes. -The 4th Doctor
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