Date: Sat, 27 Jul 2002 16:07:02 +1000 From: Peter Kostouros <kpeter@melbpc.org.au> To: freebsd-current <freebsd-current@FreeBSD.org> Subject: Re: About the recent kernel crashes. Message-ID: <3D423886.7000406@melbpc.org.au> References: <3D422501.3060302@melbpc.org.au>
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Hi
I ran a gdb session again and I hope the following is more helpful:
GNU gdb 5.2.0 (FreeBSD) 20020627
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
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This GDB was configured as "i386-undermydesk-freebsd"...
panic: bremfree: bp 0xc685fe48 not locked
panic messages:
---
panic: Assertion (m->mtx_lock & (MTX_RECURSED|MTX_CONTESTED)) == 0 failed at
/mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_mutex.c:915
syncing disks... panic: bremfree: bp 0xc685fe48 not locked
Uptime: 2m49s
pfs_vncache_unload(): 1 entries remaining
Dumping 255 MB
ata1: resetting devices ..
done
16 32 48 64 80 96 112 128 144 160 176 192 208 224 240
---
#0 doadump () at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_shutdown.c:213
213 dumping++;
(kgdb) where
#0 doadump () at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_shutdown.c:213
#1 0xc028b176 in boot (howto=260)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_shutdown.c:345
#2 0xc028b335 in panic ()
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_shutdown.c:493
#3 0xc02bd0a5 in bremfree (bp=0xc685fe48)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/vfs_bio.c:633
#4 0xc02be816 in vfs_bio_awrite (bp=0xc685fe48)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/vfs_bio.c:1627
#5 0xc02651b8 in spec_fsync (ap=0xcfffda94)
at /mnt/aux3/cvs/freebsd/usr/src/sys/fs/specfs/spec_vnops.c:403
#6 0xc0264da7 in spec_vnoperate (ap=0x0)
at /mnt/aux3/cvs/freebsd/usr/src/sys/fs/specfs/spec_vnops.c:121
#7 0xc037a385 in ffs_sync (mp=0xc17fae00, waitfor=2, cred=0xc0ef5e00,
td=0xc0491540) at vnode_if.h:463
#8 0xc02cbe8c in sync (td=0xc0491540, uap=0x0)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/vfs_syscalls.c:127
#9 0xc028ae1d in boot (howto=256)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_shutdown.c:254
#10 0xc028b335 in panic ()
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_shutdown.c:493
#11 0xc0283fef in mtx_destroy (m=0x0)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_mutex.c:915
#12 0xc03037f9 in in6_pcbdetach (inp=0xc1953248)
at /mnt/aux3/cvs/freebsd/usr/src/sys/netinet6/in6_pcb.c:625
#13 0xc02f4046 in tcp_close (tp=0xc1953348)
at /mnt/aux3/cvs/freebsd/usr/src/sys/netinet/tcp_subr.c:729
#14 0xc02f871a in tcp_disconnect (tp=0xc1953348)
at /mnt/aux3/cvs/freebsd/usr/src/sys/netinet/tcp_usrreq.c:1192
#15 0xc02f6fe8 in tcp_usr_detach (so=0x0)
at /mnt/aux3/cvs/freebsd/usr/src/sys/netinet/tcp_usrreq.c:178
#16 0xc02b57c0 in soclose (so=0xc192c4e0)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/uipc_socket.c:360
#17 0xc02a919a in soo_close (fp=0x0, td=0xc17fea80)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/sys_socket.c:215
#18 0xc02758a2 in fdrop_locked (fp=0xc19f3a8c, td=0xc17fea80) at file.h:228
#19 0xc02754f8 in fdrop (fp=0xc19f3a8c, td=0xc17fea80)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_descrip.c:1622
#20 0xc02754cb in closef (fp=0xc19f3a8c, td=0xc17fea80)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_descrip.c:1608
#21 0xc027417b in close (td=0xc17fea80, uap=0x0)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_descrip.c:800
#22 0xc03c0ec4 in syscall (frame=
{tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 0, tf_esi = 21, tf_ebp = -1078989288,
tf_isp = -805315212, tf_ebx = 677687508, tf_edx = 699043868, tf_ecx = 9, tf_eax = 6,
tf_trapno = 22, tf_err = 2, tf_eip = 677955607, tf_cs = 31, tf_eflags = 514,
tf_esp = -1078989412, tf_ss = 47})
at /mnt/aux3/cvs/freebsd/usr/src/sys/i386/i386/trap.c:1050
#23 0xc03b435d in syscall_with_err_pushed () at {standard input}:128
(kgdb) up 11
#11 0xc0283fef in mtx_destroy (m=0x0)
at /mnt/aux3/cvs/freebsd/usr/src/sys/kern/kern_mutex.c:915
915 MPASS((m->mtx_lock & (MTX_RECURSED|MTX_CONTESTED)) == 0);
(kgdb) list
910 LOCK_LOG_DESTROY(&m->mtx_object, 0);
911
912 if (!mtx_owned(m))
913 MPASS(mtx_unowned(m));
914 else {
915 MPASS((m->mtx_lock & (MTX_RECURSED|MTX_CONTESTED)) == 0);
916
917 /* Tell witness this isn't locked to make it happy. */
918 WITNESS_UNLOCK(&m->mtx_object, LOP_EXCLUSIVE, __FILE__,
919 __LINE__);
(kgdb) p m
$1 = (struct mtx *) 0x0
(kgdb) q
Peter Kostouros wrote:
> Hi
>
> I got something similar after cvsup'ing and generating a system
> earlier today (4hrs
> ago) and running mozilla. Unlike other times, I have a coredump.
> I hope the following helps:
--
Regards
Peter
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