Date: Tue, 18 Feb 2003 07:46:41 +0200 From: ianf@za.uu.net To: freebsd-current@FreeBSD.ORG Subject: panic (fault on nofault) Message-ID: <1719.1045547201@wcom.com>
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Hi
I turned softupdates back on recently. This panic is very repeatable:
turn off the computer without shutting down. It panics shortly
after the background fsck starts. The kernel and world are recent
and in sync:
[brane-dead] ~ # uname -a
FreeBSD brane-dead.digs.iafrica.com 5.0-CURRENT FreeBSD 5.0-CURRENT #8: Mon Feb 17 18:41:46 SAST 2003 ianf@brane-dead.digs.iafrica.com:/usr/src/sys/i386/compile/BRANE-DEAD i386
I couldn't get the kernel debugger to give me a back trace. The
next most interesting thing I could get was a proc listing. fsck
on CPU1 and idle on CPU0. All the filesystems are UFS1 and the
partitions are legacy FreeBSD4.7 partitions. I've included the
first 20 lines of a dumpfs of all of the filesystems at the end.
The real PITA is the system never comes back after an unclean shutdown.
If someone can tell me how or point me to some (working) docs I'll
try to get a more detailed report.
Ian
panic: vm_fault: fault on nofault entry, addr: c8667000
cpuid = 1; lapic.id = 01000000
Debugger("panic")
Stopped at Debugger+0x55: xchgl %ebx,in_Debugger.0
db> show all procs
pid proc addr uid ppid pgrp flag stat wmesg wchan cmd
507 c3955730 d2f1a000 0 481 34 0004000 norm[CPU 1] fsck_ufs
501 c39f7c94 d2f39000 1000 500 501 0004002 norm[SLPQ ttyin c3a9b640][SLP] bash
500 c3906ac8 d27fb000 1000 498 395 0000100 norm[CVQ select c034a834][SLP]
sshd
498 c3a9a564 d2fa5000 0 395 395 0000100 norm[SLPQ sbwait c3ab4364][SLP] sshd
493 c3955564 d2f19000 65534 490 493 0004000 norm[SLPQ piperd c3951420][SLP] unlinkd
490 c3906000 d27f5000 65534 465 465 0004100 norm[CVQ select c034a834][SLP] squid
488 c39061cc d27f6000 80 446 446 0000100 norm[SLPQ lockf c3aa34c0][SLP] httpd
487 c39f9000 d2f3a000 80 446 446 0000100 norm[SLPQ lockf c3a5bc80][SLP] httpd
486 c3908c94 d283a000 80 446 446 0000100 norm[CVQ select c034a834][SLP] httpd
485 c3a9a000 d2fa2000 80 446 446 0000100 norm[SLPQ lockf c395c580][SLP] httpd
484 c3a9a1cc d2fa3000 80 446 446 0000100 norm[SLPQ lockf c3a53c00][SLP] httpd
481 c39551cc d2f17000 0 479 34 0004002 norm[SLPQ wait c39551cc][SLP] fsck
480 c39f7564 d2f35000 0 1 34 0004002 norm[SLPQ piperd c3952160][SLP] logger
479 c39f7730 d2f36000 0 1 34 0000002 norm[SLPQ wait c39f7730][SLP] sh
475 c3a99730 d2f9e000 0 1 475 0000000 norm[SLPQ nanslp c03772f8][SLP] cron
465 c3a99564 d2f9d000 0 1 465 0000000 norm[SLPQ wait c3a99564][SLP] squid
446 c3955398 d2f18000 0 1 446 0000000 norm[CVQ select c034a834][SLP] httpd
444 c39f7000 d2f25000 70 443 34 0000002 norm[CVQ select c034a834][SLP] postgres
443 c39558fc d2f1b000 70 435 34 0000002 norm[CVQ select c034a834][SLP] postgres
435 c3908564 d2836000 70 1 34 0004002 norm[CVQ select c034a834][SLP] postgres
400 c39f78fc d2f37000 26 1 400 0000100 norm[CVQ select c034a834][SLP] exim
395 c39f91cc d2f3b000 0 1 395 0000100 norm[CVQ select c034a834][SLP] sshd
378 c39f9730 d2f3e000 0 1 378 0000000 norm[CVQ select c034a834][SLP] ntpd
365 c3908ac8 d2839000 0 1 365 0000000 norm[CVQ select c034a834][SLP] lpd
256 c39f7398 d2f34000 0 1 256 0000000 norm[CVQ select c034a834][SLP] named
245 c3863c94 d27ce000 0 1 245 0000000 norm[CVQ select c034a834][SLP] syslogd
192 c39f9564 d2f3d000 0 1 192 0000000 norm[CVQ select c034a834][SLP] ppp
33 c3906c94 d27fc000 0 0 0 0000204 norm[SLPQ vlruwt c3906c94][SLP] vnlru
9 c3908000 d2833000 0 0 0 0000204 norm[SLPQ syncer c034842c][SLP] syncer
8 c39081cc d2834000 0 0 0 0000204 norm[SLPQ psleep c039d090][SLP] bufdaemon
7 c37f0564 ce77c000 0 0 0 000020c norm[SLPQ pgzero c039e5d4][SLP] pagezero
6 c37f0730 ce7b3000 0 0 0 0000204 norm[SLPQ psleep c039e5ec][SLP] vmdaemon
5 c37f08fc ce7b4000 0 0 0 0000204 norm[SLPQ psleep c03570e4][SLP] pagedaemon
32 c37f0ac8 ce7b5000 0 0 0 0000204 new [IWAIT] irq8: rtc
31 c37f0c94 ce7b6000 0 0 0 0000204 new [IWAIT] irq0: clk
30 c3863000 d27c7000 0 0 0 0000204 new [IWAIT] irq3: sio1
29 c38631cc d27c8000 0 0 0 0000204 new [IWAIT] irq4: sio0
28 c3863398 d27c9000 0 0 0 0000204 norm[IWAIT] swi0: tty:sio
27 c3863564 d27ca000 0 0 0 0000204 new [IWAIT] irq7: ppc0
26 c3863730 d27cb000 0 0 0 0000204 new [IWAIT] irq6: fdc0
25 c38638fc d27cc000 0 0 0 0000204 norm[IWAIT] irq2: xl0 ahc0
24 c0d1e1cc cd571000 0 0 0 0000204 norm[SLPQ usbtsk c0340f5c][SLP] usbtask
23 c0d1e398 cd572000 0 0 0 0000204 norm[SLPQ usbevt c384e210][SLP] usb0
22 c0d1e564 cd573000 0 0 0 0000204 new [IWAIT] irq11: uhci0
21 c0d1e730 cd574000 0 0 0 0000204 new [IWAIT] irq15: ata1
20 c0d1e8fc cd575000 0 0 0 0000204 norm[LOCK Giant c0347280] irq14: ata0
19 c0d1eac8 cd576000 0 0 0 0000204 norm[IWAIT] swi3: cambio
18 c0d1ec94 cd577000 0 0 0 0000204 new [IWAIT] swi2: camnet
16 c37f01cc ce77a000 0 0 0 0000204 norm[SLPQ sleep c0364480][SLP] random
4 c37f0398 ce77b000 0 0 0 0000204 norm[LOCK Giant c0347280] g_down
3 c0d17000 cd4fc000 0 0 0 0000204 norm[SLPQ g_up c0341d4c][SLP] g_up
2 c0d171cc cd569000 0 0 0 0000204 norm[SLPQ g_events c0341d44][SLP] g_event
15 c0d17398 cd56a000 0 0 0 0000204 new [IWAIT] swi4: vm
14 c0d17564 cd56b000 0 0 0 000020c norm[LOCK Giant c0347280] swi6: tty:sio clock
13 c0d17730 cd56c000 0 0 0 0000204 norm[IWAIT] swi1: net
12 c0d178fc cd56d000 0 0 0 000020c norm[CPU 0] idle: cpu0
11 c0d17ac8 cd56e000 0 0 0 000020c norm[Can run] idle: cpu1
1 c0d17c94 cd56f000 0 0 1 0004200 norm[SLPQ wait c0d17c94][SLP] init
10 c0d1e000 cd570000 0 0 0 0000204 norm[CVQ ktrace c0373e14][SLP] ktrace
0 c0342a60 c0442000 0 0 0 0000200 norm[SLPQ sched c0342a60][SLP] swapper
And then later:
panic: vm_fault: fault on nofault entry, addr: c847f000
cpuid = 0; lapic.id = 00000000
Debugger("panic")
Stopped at Debugger+0x55: xchgl %ebx,in_Debugger.0
db> call boot
boot() called on cpu#0
syncing disks, buffers remaining... panic: bremfree: bp 0xc75c0b00 not locked
cpuid = 0; lapic.id = 00000000
boot() called on cpu#0
Uptime: 3m6s
pfs_vncache_unload(): 1 entries remaining
Automatic reboot in 15 seconds - press a key on the console to abort
[brane-dead] ~ # dumpfs /dev/ad0s1a |head -20
magic 11954 (UFS1) time Tue Feb 18 06:30:41 2003
id [ 3cefb4a1 43ff6e5f ]
ncg 13 size 262144 blocks 246407
bsize 4096 shift 12 mask 0xfffff000
fsize 512 shift 9 mask 0xfffffe00
frag 8 shift 3 fsbtodb 0
minfree 8% optim time symlinklen 60
maxbpg 1024 maxcontig 31 contigsumsize 16
nbfree 8719 ndir 91 nifree 58892 nffree 305
cpg 5 bpg 2560 fpg 20480 ipg 4736
nindir 1024 inopb 32 nspf 1 maxfilesize 4402345721855
sbsize 1536 cgsize 4096 cgoffset 4096 cgmask 0xffffffff
csaddr 1240 cssize 512
rotdelay 0ms rps 60 trackskew 0 interleave 1
nsect 4096 npsect 4096 spc 4096
sblkno 32 cblkno 48 iblkno 56 dblkno 1240
cgrotor 11 fmod 0 ronly 0 clean 0
flags none
fsmnt /
volname swuid 0
[brane-dead] ~ # dumpfs /dev/ad0s1e |head -20
magic 11954 (UFS1) time Tue Feb 18 07:22:42 2003
id [ 3cefb637 7162c7e5 ]
ncg 26 size 524288 blocks 492847
bsize 4096 shift 12 mask 0xfffff000
fsize 512 shift 9 mask 0xfffffe00
frag 8 shift 3 fsbtodb 0
minfree 8% optim time symlinklen 60
maxbpg 1024 maxcontig 31 contigsumsize 16
nbfree 52817 ndir 140 nifree 122445 nffree 447
cpg 5 bpg 2560 fpg 20480 ipg 4736
nindir 1024 inopb 32 nspf 1 maxfilesize 4402345721855
sbsize 1536 cgsize 4096 cgoffset 4096 cgmask 0xffffffff
csaddr 1240 cssize 512
rotdelay 0ms rps 60 trackskew 0 interleave 1
nsect 4096 npsect 4096 spc 4096
sblkno 32 cblkno 48 iblkno 56 dblkno 1240
cgrotor 20 fmod 0 ronly 0 clean 0
flags soft-updates
fsmnt /var
volname swuid 0
[brane-dead] ~ # dumpfs /dev/ad0s1f |head -20
magic 11954 (UFS1) time Mon Feb 17 23:31:25 2003
id [ 3cefb63d 36bb1905 ]
ncg 205 size 4194520 blocks 3943561
bsize 4096 shift 12 mask 0xfffff000
fsize 512 shift 9 mask 0xfffffe00
frag 8 shift 3 fsbtodb 0
minfree 8% optim time symlinklen 60
maxbpg 1024 maxcontig 31 contigsumsize 16
nbfree 166950 ndir 19663 nifree 835330 nffree 59884
cpg 5 bpg 2560 fpg 20480 ipg 4800
nindir 1024 inopb 32 nspf 1 maxfilesize 4402345721855
sbsize 1536 cgsize 4096 cgoffset 4096 cgmask 0xffffffff
csaddr 1256 cssize 3584
rotdelay 0ms rps 60 trackskew 0 interleave 1
nsect 4096 npsect 4096 spc 4096
sblkno 32 cblkno 48 iblkno 56 dblkno 1256
cgrotor 107 fmod 0 ronly 0 clean 0
flags soft-updates
fsmnt /usr
volname swuid 0
[brane-dead] ~ # dumpfs /dev/ad0s1g |head -20
magic 11954 (UFS1) time Tue Feb 18 07:11:31 2003
id [ 3cefb660 7978123 ]
ncg 154 size 3145728 blocks 2957195
bsize 4096 shift 12 mask 0xfffff000
fsize 512 shift 9 mask 0xfffffe00
frag 8 shift 3 fsbtodb 0
minfree 8% optim time symlinklen 60
maxbpg 1024 maxcontig 31 contigsumsize 16
nbfree 297834 ndir 4114 nifree 714759 nffree 57614
cpg 5 bpg 2560 fpg 20480 ipg 4800
nindir 1024 inopb 32 nspf 1 maxfilesize 4402345721855
sbsize 1536 cgsize 4096 cgoffset 4096 cgmask 0xffffffff
csaddr 1256 cssize 2560
rotdelay 0ms rps 60 trackskew 0 interleave 1
nsect 4096 npsect 4096 spc 4096
sblkno 32 cblkno 48 iblkno 56 dblkno 1256
cgrotor 62 fmod 0 ronly 0 clean 0
flags soft-updates
fsmnt /web-cache
volname swuid 0
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