Date: Sun, 26 Mar 2006 18:02:30 +0100 From: "Joao Barros" <joao.barros@gmail.com> To: freebsd-current@freebsd.org Subject: Re: lockmgr: thread 0xc385ebd0 unlocking unheld lock Message-ID: <70e8236f0603260902t798560e1x6ac9b9c883ff3f20@mail.gmail.com> In-Reply-To: <70e8236f0603260715u54e4640di18300fa1fd031c4f@mail.gmail.com> References: <70e8236f0603260715u54e4640di18300fa1fd031c4f@mail.gmail.com>
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On 3/26/06, Joao Barros <joao.barros@gmail.com> wrote:
> Last night I was mounting a windows share with mount_smbfs and
> browsing it via apache and I got the machine to panic twice. I was
> tired and went to bed.
> Today I can't replicate the panic but this always happens when I unmount:
>
> I'm trying to replicate the panic, and if I can I'll post a followup.
>
Here's the panic while doing a cvsup:
panic: mutex Giant not owned at /usr/src/sys/kern/vfs_subr.c:2025
KDB: enter: panic
[thread pid 979 tid 100090 ]
Stopped at kdb_enter+0x2b: nop
db> where
Tracing pid 979 tid 100090 td 0xc3573510
kdb_enter(c06cc0e7) at kdb_enter+0x2b
panic(c06cb401,c06dbed4,c06d5d7b,7e9,c3766000) at panic+0xbb
--More-- _mtx_assert(c0733b28,1,c06d5d7b,7e9) at _mtx_assert+0x66
vrele(c3766000,c34efc28,c34ef800,c3573510,d6aff82c) at vrele+0x4e
smbfs_reclaim(d6aff82c) at smbfs_reclaim+0xc9
VOP_RECLAIM_APV(c3735a60,d6aff82c) at VOP_RECLAIM_APV+0x7e
vgonel(c3766410) at vgonel+0x12d
vtryrecycle(c3766410,0,2,d6aff8ac,c059f18f) at vtryrecycle+0x107
vnlru_free(1) at vnlru_free+0x14e
getnewvnode(c06d3bc3,c351b000,c071e880,d6aff918,d6aff8f0) at getnewvnode+0x=
33
ffs_vget(c351b000,5dbe1,2,d6aff97c) at ffs_vget+0xc2
ufs_lookup(d6affa20) at ufs_lookup+0xaa2
VOP_CACHEDLOOKUP_APV(c071e880,d6affa20) at VOP_CACHEDLOOKUP_APV+0x7e
vfs_cache_lookup(d6affabc,c3819c30,0,d6affad8,c059a3fe) at vfs_cache_lookup=
+0xb2
VOP_LOOKUP_APV(c071e880,d6affabc) at VOP_LOOKUP_APV+0x87
lookup(d6affb48,0,0,c3573510,c381a000) at lookup+0x3f6
namei(d6affb48,82b5304,0,0,c3544c30) at namei+0x382
kern_lstat(c3573510,82b5304,0,d6affc1c) at kern_lstat+0x47
lstat(c3573510,d6affd04,c0734404,0,c328cd00) at lstat+0x1b
syscall(bfbf003b,bfbf003b,81d003b,bfbfed28,bfbfed1c) at syscall+0x27e
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (190, FreeBSD ELF32, lstat), eip =3D 0x2819d9db, esp =3D
0x81dbaa0, ebp =3D 0x8
1dbb3c ---
db> show pcpu
cpuid =3D 0
curthread =3D 0xc3573510: pid 979 "cvsup"
curpcb =3D 0xd6affd90
fpcurthread =3D 0xc3573510: pid 979 "cvsup"
idlethread =3D 0xc328f510: pid 10 "idle"
APIC ID =3D 0
currentldt =3D 0x50
spin locks held:
db> show alllocks
db> show lockedvnods
Locked vnodes
0xc3819c30: tag ufs, type VDIR
usecount 1, writecount 0, refcount 3 mountedhere 0
flags ()
lock type ufs: EXCL (count 1) by thread 0xc3573510 (pid 979)
=09ino 378071, on dev da0s1f
0xc3766410: tag smbfs, type VREG
usecount 0, writecount 0, refcount 1 mountedhere 0
flags (VI_DOOMED)
lock type smbfs: EXCL (count 1) by thread 0xc3573510 (pid 979)
db> where 979
Tracing pid 979 tid 100090 td 0xc3573510
kdb_enter(c06cc0e7) at kdb_enter+0x2b
panic(c06cb401,c06dbed4,c06d5d7b,7e9,c3766000) at panic+0xbb
_mtx_assert(c0733b28,1,c06d5d7b,7e9) at _mtx_assert+0x66
vrele(c3766000,c34efc28,c34ef800,c3573510,d6aff82c) at vrele+0x4e
smbfs_reclaim(d6aff82c) at smbfs_reclaim+0xc9
VOP_RECLAIM_APV(c3735a60,d6aff82c) at VOP_RECLAIM_APV+0x7e
vgonel(c3766410) at vgonel+0x12d
vtryrecycle(c3766410,0,2,d6aff8ac,c059f18f) at vtryrecycle+0x107
vnlru_free(1) at vnlru_free+0x14e
getnewvnode(c06d3bc3,c351b000,c071e880,d6aff918,d6aff8f0) at getnewvnode+0x=
33
ffs_vget(c351b000,5dbe1,2,d6aff97c) at ffs_vget+0xc2
ufs_lookup(d6affa20) at ufs_lookup+0xaa2
VOP_CACHEDLOOKUP_APV(c071e880,d6affa20) at VOP_CACHEDLOOKUP_APV+0x7e
vfs_cache_lookup(d6affabc,c3819c30,0,d6affad8,c059a3fe) at vfs_cache_lookup=
+0xb2
VOP_LOOKUP_APV(c071e880,d6affabc) at VOP_LOOKUP_APV+0x87
lookup(d6affb48,0,0,c3573510,c381a000) at lookup+0x3f6
namei(d6affb48,82b5304,0,0,c3544c30) at namei+0x382
kern_lstat(c3573510,82b5304,0,d6affc1c) at kern_lstat+0x47
lstat(c3573510,d6affd04,c0734404,0,c328cd00) at lstat+0x1b
syscall(bfbf003b,bfbf003b,81d003b,bfbfed28,bfbfed1c) at syscall+0x27e
--More-- Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (190, FreeBSD ELF32, lstat), eip =3D 0x2819d9db, esp =3D
0x81dbaa0, ebp =3D 0x8
1dbb3c ---
db> ps
pid proc uid ppid pgrp flag stat wmesg wchan cmd
979 c385cd38 0 508 979 0004002 [CPU 0] cvsup
716 c385c000 0 1 0 0000204 [SLPQ 90idle 0xc376c084][SLP] smbio=
d2
695 c385c8d0 80 683 683 0000100 [SLPQ accept 0xc35b556a][SLP] httpd
694 c385c468 80 683 683 0000100 [SLPQ accept 0xc35b556a][SLP] httpd
693 c385c69c 80 683 683 0000100 [SLPQ accept 0xc35b556a][SLP] httpd
692 c36cb468 80 683 683 0000100 [SLPQ accept 0xc35b556a][SLP] httpd
691 c3571000 80 683 683 0000100 [SLPQ accept 0xc35b556a][SLP] httpd
690 c3858000 80 683 683 0000100 [SLPQ accept 0xc35b556a][SLP] httpd
686 c385869c 80 683 683 0000100 [SLPQ accept 0xc35b556a][SLP] httpd
685 c3858468 80 683 683 0000100 [SLPQ accept 0xc35b556a][SLP] httpd
684 c3858d38 80 683 683 0000100 [SLPQ accept 0xc35b556a][SLP] httpd
683 c36cad38 0 1 683 0000000 [SLPQ nanslp 0xc07343e4][SLP] httpd
508 c36ca000 0 507 508 0004002 [SLPQ pause 0xc36ca034][SLP] csh
507 c36ca234 1001 505 507 0004102 [SLPQ wait 0xc36ca234][SLP] su
505 c36ca69c 1001 504 505 0004002 [SLPQ wait 0xc36ca69c][SLP] sh
504 c36ca8d0 1001 501 501 0000100 [SLPQ select 0xc077daac][SLP] sshd
501 c36cb000 0 429 501 0004100 [SLPQ sbwait 0xc35b41e8][SLP] sshd
496 c36cbb04 0 1 496 0004002 [SLPQ ttyin 0xc3408410][SLP] getty
495 c36cbd38 0 1 495 0004002 [SLPQ ttyin 0xc3408810][SLP] getty
494 c3527d38 0 1 494 0004002 [SLPQ ttyin 0xc3418c10][SLP] getty
493 c33e3d38 0 1 493 0004002 [SLPQ ttyin 0xc3419c10][SLP] getty
492 c3571b04 0 1 492 0004002 [SLPQ ttyin 0xc3405810][SLP] getty
491 c3571468 0 1 491 0004002 [SLPQ ttyin 0xc341a810][SLP] getty
490 c3571234 0 1 490 0004002 [SLPQ ttyin 0xc3419010][SLP] getty
489 c33e38d0 0 1 489 0004002 [SLPQ ttyin 0xc3408c10][SLP] getty
445 c35718d0 0 1 445 0000000 [SLPQ nanslp 0xc07343e4][SLP] cron
439 c33e3b04 25 1 439 0000100 [SLPQ pause 0xc33e3b38][SLP] sendma=
il
435 c3571d38 0 1 435 0000100 [SLPQ select 0xc077daac][SLP] sendm=
ail
429 c352769c 0 1 429 0000100 [SLPQ select 0xc077daac][SLP] sshd
286 c3527468 0 1 286 0000000 [SLPQ select 0xc077daac][SLP] syslo=
gd
253 c35278d0 0 1 253 0000000 [SLPQ select 0xc077daac][SLP] devd
146 c357169c 0 1 146 0000000 [SLPQ pause 0xc35716d0][SLP] adjker=
ntz
46 c3524000 0 0 0 0000204 [SLPQ - 0xd58edd04][SLP] schedcpu
45 c3524234 0 0 0 0000204 [SLPQ - 0xc0780fcc][SLP] nfsiod 3
44 c3524468 0 0 0 0000204 [SLPQ - 0xc0780fc8][SLP] nfsiod 2
43 c352469c 0 0 0 0000204 [SLPQ - 0xc0780fc4][SLP] nfsiod 1
42 c35248d0 0 0 0 0000204 [SLPQ - 0xc0780fc0][SLP] nfsiod 0
41 c3524b04 0 0 0 0000204 [SLPQ sdflush 0xc07864e0][SLP]
softdepflush
40 c3524d38 0 0 0 0000204 [SLPQ syncer 0xc07340ec][SLP] synce=
r
39 c3527000 0 0 0 0000204 [SLPQ vlruwt 0xc3527000][SLP] vnlru
38 c332fd38 0 0 0 0000204 [SLPQ psleep 0xc077df0c][SLP] bufda=
emon
37 c33dc000 0 0 0 000020c [SLPQ pgzero 0xc078ee10][SLP] pagez=
ero
36 c33dc234 0 0 0 0000204 [SLPQ psleep 0xc0786d3c][SLP] vmdae=
mon
35 c33dc468 0 0 0 0000204 [SLPQ psleep 0xc0786cfc][SLP] paged=
aemon
34 c33dc69c 0 0 0 0000204 [IWAIT] swi0: sio
33 c33dc8d0 0 0 0 0000204 [SLPQ - 0xc33ca63c][SLP] fdc0
32 c33dcb04 0 0 0 0000204 [IWAIT] irq1: atkbd0
31 c33dcd38 0 0 0 0000204 [SLPQ usbevt 0xc33e5210][SLP] usb1
30 c33e3000 0 0 0 0000204 [SLPQ usbtsk 0xc0731924][SLP] usbta=
sk
29 c33e3234 0 0 0 0000204 [SLPQ usbevt 0xc33d7210][SLP] usb0
28 c33e3468 0 0 0 0000204 [IWAIT] irq15: ata1 uhci1
27 c32df69c 0 0 0 0000204 [IWAIT] irq14: ata0
26 c32df8d0 0 0 0 0000204 [SLPQ idle 0xc33ca200][SLP]
aic_recovery1
25 c32dfb04 0 0 0 0000204 [IWAIT] irq10: ahc1 amr0
24 c32dfd38 0 0 0 0000204 [SLPQ idle 0xc33ca200][SLP]
aic_recovery1
23 c332f000 0 0 0 0000204 [SLPQ idle 0xc3289000][SLP]
aic_recovery0
22 c332f234 0 0 0 0000204 [IWAIT] irq5: ahc0
21 c332f468 0 0 0 0000204 [SLPQ idle 0xc3289000][SLP]
aic_recovery0
20 c332f69c 0 0 0 0000204 [RUNQ] irq3: fxp0 uhci0
19 c332f8d0 0 0 0 0000204 [IWAIT] irq9: acpi0
18 c332fb04 0 0 0 0000204 [IWAIT] swi6: Giant taskq
17 c3294234 0 0 0 0000204 [IWAIT] swi6: task queue
9 c3294468 0 0 0 0000204 [SLPQ - 0xc328d480][SLP] acpi_task_=
2
8 c329469c 0 0 0 0000204 [SLPQ - 0xc328d480][SLP] acpi_task_=
1
7 c32948d0 0 0 0 0000204 [SLPQ - 0xc328d480][SLP] acpi_task_=
0
6 c3294b04 0 0 0 0000204 [SLPQ - 0xc328d580][SLP] kqueue tas=
kq
16 c3294d38 0 0 0 0000204 [IWAIT] swi2: cambio
15 c32df000 0 0 0 0000204 [IWAIT] swi5: +
5 c32df234 0 0 0 0000204 [SLPQ - 0xc328d800][SLP] thread tas=
kq
14 c32df468 0 0 0 0000204 [SLPQ - 0xc072f880][SLP] yarrow
4 c328e000 0 0 0 0000204 [SLPQ - 0xc073205c][SLP] g_down
3 c328e234 0 0 0 0000204 [SLPQ - 0xc0732058][SLP] g_up
2 c328e468 0 0 0 0000204 [SLPQ - 0xc0732050][SLP] g_event
13 c328e69c 0 0 0 0000204 [IWAIT] swi1: net
12 c328e8d0 0 0 0 0000204 [IWAIT] swi3: vm
11 c328eb04 0 0 0 000020c [RUNQ] swi4: clock sio
10 c328ed38 0 0 0 000020c [Can run] idle
1 c3294000 0 0 1 0004200 [SLPQ wait 0xc3294000][SLP] init
0 c0732160 0 0 0 0000200 [IWAIT] swapper
db>
--
Joao Barros
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