Date: Tue, 18 Dec 2001 22:47:58 +0000 From: Josef Karthauser <joe@tao.org.uk> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Martin Blapp <mb@imp.ch>, freebsd-hackers@FreeBSD.ORG Subject: Re: deadlock with softupdates ? Message-ID: <20011218224758.A412@tao.org.uk> In-Reply-To: <200112181924.fBIJOSe70566@apollo.backplane.com>; from dillon@apollo.backplane.com on Tue, Dec 18, 2001 at 11:24:28AM -0800 References: <20011217223123.P59342-100000@levais.imp.ch> <200112172141.fBHLfSc33112@apollo.backplane.com> <20011218105527.A708@tao.org.uk> <200112181924.fBIJOSe70566@apollo.backplane.com>
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On Tue, Dec 18, 2001 at 11:24:28AM -0800, Matthew Dillon wrote:
>=20
> :genius# ps -axl -M vmcore.15 -N kernel.15=3D20
> :(attached file)
> :
> :The back traces for the processes locked in inode is also attached.
> :
> :Being green to debugging this kind of thing what should I do next?
> :
> :Joe
>=20
> Please backtrace the processes stuck in 'vfscac' as well. Actually,
> backtrace all the processes that are stuck in weird places.
Ok, here are some vfscac processes:
(kgdb) bt
#0 0xc01db56d in mi_switch () at /usr/src/sys/kern/kern_synch.c:781
#1 0xc01dad33 in msleep (ident=3D0xc03326c0, mtx=3D0xc0355720, priority=3D=
66,=20
wmesg=3D0xc02e8634 "vfscache", timo=3D0) at
/usr/src/sys/kern/kern_synch.c:496
#2 0xc01cc709 in malloc (size=3D55, type=3D0xc03326c0, flags=3D0)
at /usr/src/sys/kern/kern_malloc.c:162
#3 0xc020acb6 in cache_enter (dvp=3D0xe42d5380, vp=3D0xe42d2900,
cnp=3D0xe4646c6c)
at /usr/src/sys/kern/vfs_cache.c:415
#4 0xc0277535 in ufs_lookup (ap=3D0xe4646b6c)
at /usr/src/sys/ufs/ufs/ufs_lookup.c:627
#5 0xc027c729 in ufs_vnoperate (ap=3D0xe4646b6c)
at /usr/src/sys/ufs/ufs/ufs_vnops.c:2658
#6 0xc020b1f6 in vfs_cache_lookup (ap=3D0xe4646bc4) at vnode_if.h:66
#7 0xc027c729 in ufs_vnoperate (ap=3D0xe4646bc4)
at /usr/src/sys/ufs/ufs/ufs_vnops.c:2658
#8 0xc020e9b9 in lookup (ndp=3D0xe4646c44) at vnode_if.h:45
#9 0xc020e4a4 in namei (ndp=3D0xe4646c44) at
/usr/src/sys/kern/vfs_lookup.c:168
#10 0xc0215df5 in lstat (td=3D0xe44ec104, uap=3D0xe4646d20)
at /usr/src/sys/kern/vfs_syscalls.c:2012
#11 0xc02b1c88 in syscall (frame=3D{tf_fs =3D 47, tf_es =3D 47, tf_ds =3D 4=
7,=20
tf_edi =3D -1077942172, tf_esi =3D -1077940908, tf_ebp =3D -107794207=
6,=20
tf_isp =3D -463180428, tf_ebx =3D 5, tf_edx =3D -1077940908, tf_ecx =
=3D 2,=20
tf_eax =3D 190, tf_trapno =3D 22, tf_err =3D 2, tf_eip =3D 673929251,=
=20
tf_cs =3D 31, tf_eflags =3D 663, tf_esp =3D -1077942312, tf_ss =3D 47=
})
at /usr/src/sys/i386/i386/trap.c:1150
#12 0xc02a52ed in syscall_with_err_pushed ()
#13 0x808e39c in ?? ()
#14 0x8052201 in ?? ()
#15 0x805abd0 in ?? ()
#16 0x806b735 in ?? ()
#17 0x804b699 in ?? ()
(kgdb) bt
#0 0xc01db56d in mi_switch () at /usr/src/sys/kern/kern_synch.c:781
#1 0xc01dad33 in msleep (ident=3D0xc03326c0, mtx=3D0xc0355720, priority=3D=
66,=20
wmesg=3D0xc02e8634 "vfscache", timo=3D0) at
/usr/src/sys/kern/kern_synch.c:496
#2 0xc01cc709 in malloc (size=3D42, type=3D0xc03326c0, flags=3D0)
at /usr/src/sys/kern/kern_malloc.c:162
#3 0xc020acb6 in cache_enter (dvp=3D0xe4765000, vp=3D0xe47c2840,
cnp=3D0xe44eac54)
at /usr/src/sys/kern/vfs_cache.c:415
#4 0xc68f936e in ?? ()
#5 0xc020e9b9 in lookup (ndp=3D0xe44eac2c) at vnode_if.h:45
#6 0xc020e4a4 in namei (ndp=3D0xe44eac2c) at
/usr/src/sys/kern/vfs_lookup.c:168
#7 0xc02193d8 in vn_open_cred (ndp=3D0xe44eac2c, flagp=3D0xe44eabf8,
cmode=3D3201,=20
cred=3D0xc7218500) at /usr/src/sys/kern/vfs_vnops.c:162
#8 0xc021919e in vn_open (ndp=3D0xe44eac2c, flagp=3D0xe44eabf8, cmode=3D32=
01)
at /usr/src/sys/kern/vfs_vnops.c:85
#9 0xc02147ca in open (td=3D0xe439f404, uap=3D0xe44ead20)
at /usr/src/sys/kern/vfs_syscalls.c:1115
#10 0xc02b1c88 in syscall (frame=3D{tf_fs =3D 134545455, tf_es =3D
-1078001617,=20
tf_ds =3D -1078001617, tf_edi =3D 134591808, tf_esi =3D -1077937040,=
=20
tf_ebp =3D -1077937572, tf_isp =3D -464605836, tf_ebx =3D -1077939620=
,=20
tf_edx =3D 17, tf_ecx =3D -1077940892, tf_eax =3D 5, tf_trapno =3D 22=
,=20
tf_err =3D 2, tf_eip =3D 672822595, tf_cs =3D 31, tf_eflags =3D 647,=
=20
tf_esp =3D -1077940800, tf_ss =3D 47}) at
/usr/src/sys/i386/i386/trap.c:1150
#11 0xc02a52ed in syscall_with_err_pushed ()
#12 0x8049a75 in ?? ()
#13 0x8049a17 in ?? ()
#14 0x8049fa5 in ?? ()
#15 0x80496e2 in ?? ()
#16 0x8049622 in ?? ()
#17 0x8049219 in ?? ()
Joe
>=20
> -Matt
>=20
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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