stable/10 panic

[Sean Bruno]

We're seeing this *a lot* on our qmail based hosts during our stable/10
rollout.  We're running stable/10 from around svn rev 261579 (mid
february) with one or two patches strewn in.

sean


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Unread portion of the kernel message buffer:
panic: page fault
cpuid = 5
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe048b9b12a0
kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe048b9b1350
vpanic() at vpanic+0x126/frame 0xfffffe048b9b1390
panic() at panic+0x43/frame 0xfffffe048b9b13f0
trap_fatal() at trap_fatal+0x3a2/frame 0xfffffe048b9b1450
trap_pfault() at trap_pfault+0x22f/frame 0xfffffe048b9b14f0
trap() at trap+0x670/frame 0xfffffe048b9b1710
calltrap() at calltrap+0x8/frame 0xfffffe048b9b1710
--- trap 0xc, rip = 0xffffffff805e759b, rsp = 0xfffffe048b9b17d0, rbp = 0xfffffe048b9b17e0 ---
__mtx_assert() at __mtx_assert+0x3b/frame 0xfffffe048b9b17e0
knote() at knote+0x39/frame 0xfffffe048b9b1830
pipeclose() at pipeclose+0xbe/frame 0xfffffe048b9b1860
pipe_dtor() at pipe_dtor+0x49/frame 0xfffffe048b9b1880
fifo_close() at fifo_close+0x144/frame 0xfffffe048b9b18c0
VOP_CLOSE_APV() at VOP_CLOSE_APV+0xea/frame 0xfffffe048b9b18f0
vn_close() at vn_close+0x139/frame 0xfffffe048b9b1960
vn_closefile() at vn_closefile+0x48/frame 0xfffffe048b9b19e0
_fdrop() at _fdrop+0x29/frame 0xfffffe048b9b1a00
closef() at closef+0x1d1/frame 0xfffffe048b9b1a90
closefp() at closefp+0xa0/frame 0xfffffe048b9b1ae0
ia32_syscall() at ia32_syscall+0x255/frame 0xfffffe048b9b1bf0
Xint0x80_syscall() at Xint0x80_syscall+0x95/frame 0xfffffe048b9b1bf0
--- syscall (6, FreeBSD ELF32, sys_close), rip = 0x210f7804, rsp = 0xffffcae4, rbp = 0xffffcb00 ---
Uptime: 6d2h46m47s
Dumping 1641 out of 16358 MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%

Reading symbols from /boot/modules/dscp_rewrite.ko...done.
Loaded symbols for /boot/modules/dscp_rewrite.ko
Reading symbols from /boot/modules/markdev_mod.ko...done.
Loaded symbols for /boot/modules/markdev_mod.ko
Reading symbols from /boot/modules/ylock_mod.ko...done.
Loaded symbols for /boot/modules/ylock_mod.ko
#0  doadump (textdump=1) at pcpu.h:219
219	pcpu.h: No such file or directory.
	in pcpu.h
(kgdb) Hangup detected on fd 0
error detected on stdin
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