kern/134011: [hang] swap_pager_getswapspace(4): failed

Randy Bush randy at psg.com
Sun May 31 01:50:03 UTC 2009


The following reply was made to PR kern/134011; it has been noted by GNATS.

From: Randy Bush <randy at psg.com>
To: bug-followup at FreeBSD.org,randy at psg.com
Cc:  
Subject: Re: kern/134011: [hang] swap_pager_getswapspace(4): failed
Date: Sun, 31 May 2009 10:48:05 +0900

 a bit better in last night's syslog, possibly during backup
 
 May 30 00:40:14 work0 kernel: lock order reversal:
 May 30 00:40:14 work0 kernel: 1st 0xffffff0057d019d0 ufs (ufs) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:423
 May 30 00:40:14 work0 kernel: 2nd 0xffffff8052c01aa0 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2556
 May 30 00:40:14 work0 kernel: 3rd 0xffffff0004b8d098 ufs (ufs) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:544
 May 30 00:40:16 work0 kernel: lock order reversal:
 May 30 00:40:16 work0 kernel: 1st 0xffffff8052c01aa0 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2556
 May 30 00:40:16 work0 kernel: 2nd 0xffffff00d35c7d30 snaplk (snaplk) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:793
 May 30 00:50:14 work0 kernel: lock order reversal:
 May 30 00:50:14 work0 kernel: 1st 0xffffff00d35c7d30 snaplk (snaplk) @ /usr/src/sys/kern/vfs_vnops.c:297
 May 30 00:50:14 work0 kernel: 2nd 0xffffff0057d019d
 May 30 00:50:14 work0 kernel: 0 ufs (ufs) @ /u
 May 30 00:50:14 work0 kernel: s
 May 30 00:50:15 work0 kernel: r/src/sys/
 May 30 00:50:15 work0 kernel: ufs/ffs/
 May 30 00:50:15 work0 kernel: ffs_snap
 May 30 00:50:15 work0 kernel: shot.c:
 May 30 00:50:15 work0 kernel: 1587
 May 30 01:45:21 work0 kernel: 
 May 30 01:45:21 work0 kernel: 
 May 30 01:45:21 work0 kernel: Fatal trap 12: page fault while in kernel mode
 May 30 01:45:21 work0 kernel: cpuid = 0; apic id = 00
 May 30 01:45:21 work0 kernel: fault virtual address	= 0x0
 May 30 01:45:21 work0 kernel: fault code		= supervisor write data, page not present
 May 30 01:45:21 work0 kernel: instruction pointer	= 0x20:0xffffffff8047c256
 May 30 01:45:21 work0 kernel: sta
 May 30 01:45:21 work0 kernel: c
 May 30 01:45:21 work0 kernel: k pointer	        = 0x28:0xffffff807a057680
 May 30 01:45:21 work0 kernel: frame pointer	        = 0x28:0xffffff807a0576e0
 May 30 01:45:21 work0 kernel: code segment		= base 0x0, limit 0xfffff, type 0x1b
 May 30 01:45:21 work0 kernel: = DPL 0, pres 1, long 1, def32 0, gran 
 May 30 01:45:21 work0 kernel: 1
 May 30 01:45:21 work0 kernel: processor eflags	= interrup
 May 30 01:45:21 work0 kernel: t enabled, resume, 
 May 30 01:45:21 work0 kernel: IOPL = 0
 May 30 01:45:21 work0 kernel: current process
 May 30 01:45:21 work0 kernel: = 9181 (nfcapd)
 <required power cycle>
 May 30 02:10:04 work0 syslogd: kernel boot file is /boot/kernel/kernel
 


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