Date: Sat, 11 Sep 2004 20:57:29 +0200 From: Thomas-Martin Seck <tmseck-lists@netcologne.de> To: freebsd-current@freebsd.org Subject: RELENG_5: occasional panic on shutdown Message-ID: <20040911185729.GA382@laurel.tmseck.homedns.org>
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Once in a while I drop into ddb when I try to shutdown my RELENG_5
machine from a serial console; please see below.
Is there anything interesting I could do in ddb to diagnose the problem?
$ sudo shutdown -h now
Shutdown NOW!
shutdown: [pid 522]
$
*** FINAL System shutdown message from thomas@current.tmseck.homedns.org ***
System going down IMMEDIATELY
Sep 11 20:50:15 current shutdown: halt by thomas:
System shutdown time has arrived
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x1c
fault code = supervisor write, page not present
instruction pointer = 0x8:0xc04c16cf
stack pointer = 0x10:0xcc551784
frame pointer = 0x10:0xcc551790
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 251 (syslogd)
[thread 100038]
Stopped at knote+0x27: cmpxchgl %ecx,0x1c(%edx)
db>
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