Date: Mon, 16 Dec 2002 22:13:29 +0100 From: Aurelien Nephtali <aurelien.nephtali@wanadoo.fr> To: current@freebsd.org Subject: panic: ffs_blkfree: freeing free block Message-ID: <20021216211329.GA525@nebula.wanadoo.fr>
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Hi,
I got a panic today which occured during a background fsck, after a hard-reboot
of the system. The dump from gdb is attached and I can, of course, provide more
infos if needed.
-- Aurelien
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Script started on Mon Dec 16 22:08:36 2002
=0D=1B[m=1B[27m=1B[Jnebula# =1B[K=1B[39C/usr/src/sys/i386/compile/NEBULA=1B=
[71Dg=08gdb -k=0D=0D
GNU gdb 5.2.1 (FreeBSD)=0D
Copyright 2002 Free Software Foundation, Inc.=0D
GDB is free software, covered by the GNU General Public License, and you ar=
e=0D
welcome to change it and/or distribute copies of it under certain condition=
s.=0D
Type "show copying" to see the conditions.=0D
There is absolutely no warranty for GDB. Type "show warranty" for details.=
=0D
This GDB was configured as "i386-undermydesk-freebsd".=0D
(kgdb) symbol-file kernel.debug =0D
Reading symbols from kernel.debug...done.=0D
(kgdb) exec-file /boot/kernel/kenre=08 =08=08 =08=08 =08rnel=0D
(kgdb) core-file /var/crash/vmcore.6 =0D
panic: from debugger=0D
panic messages:=0D
---=0D
dev =3D ad0s1f, block =3D 1088, fs =3D /tmp=0D
panic: ffs_blkfree: freeing free block=0D
panic: from debugger=0D
Uptime: 50s=0D
Dumping 123 MB=0D
ata0: resetting devices ..=0D
done=0D
16 32 48 64 80 96 112=0D
---=0D
#0 doadump () at ../../../kern/kern_shutdown.c:232=0D
232 dumping++;=0D
(kgdb) bt=0D
#0 doadump () at ../../../kern/kern_shutdown.c:232=0D
#1 0xc021c4de in boot (howto=3D260) at ../../../kern/kern_shutdown.c:364=0D
#2 0xc021c723 in panic () at ../../../kern/kern_shutdown.c:517=0D
#3 0xc013c232 in db_panic () at ../../../ddb/db_command.c:450=0D
#4 0xc013c1b2 in db_command (last_cmdp=3D0xc03a0620, cmd_table=3D0x0, =0D
aux_cmd_tablep=3D0xc039b14c, aux_cmd_tablep_end=3D0xc039b150)=0D
at ../../../ddb/db_command.c:346=0D
#5 0xc013c2c6 in db_command_loop () at ../../../ddb/db_command.c:472=0D
#6 0xc013efba in db_trap (type=3D3, code=3D0) at ../../../ddb/db_trap.c:72=
=0D
#7 0xc0335c82 in kdb_trap (type=3D3, code=3D0, regs=3D0xc850da4c)=0D
at ../../../i386/i386/db_interface.c:166=0D
#8 0xc0346a3f in trap (frame=3D=0D
{tf_fs =3D 24, tf_es =3D 16, tf_ds =3D 16, tf_edi =3D -1061658176, tf=
_esi =3D 256, tf_ebp =3D -934225256, tf_isp =3D -934225288, tf_ebx =3D 0, t=
f_edx =3D 0, tf_ecx =3D -1069391136, tf_eax =3D 18, tf_trapno =3D 3, tf_err=
=3D 0, tf_eip =3D -1070375132, tf_cs =3D 8, tf_eflags =3D 646, tf_esp =3D =
-1069985075, tf_ss =3D -1070066800})=0D
at ../../../i386/i386/trap.c:603=0D
#9 0xc0337468 in calltrap () at {standard input}:98=0D
#10 0xc021c70b in panic (fmt=3D0x0) at ../../../kern/kern_shutdown.c:503=0D
#11 0xc02d908a in ffs_blkfree (fs=3D0xc18f3000, devvp=3D0xc191dce4, bno=3D1=
088, =0D
size=3D16384, inum=3D1088) at ../../../ufs/ffs/ffs_alloc.c:1771=0D
#12 0xc02e85bf in indir_trunc (freeblks=3D0xc1b39100, dbn=3D4288, level=3D0=
, lbn=3D12, =0D
countp=3D0xc850dc10) at ../../../ufs/ffs/ffs_softdep.c:2603=0D
#13 0xc02e8065 in handle_workitem_freeblocks (freeblks=3D0xc1b39100, flags=
=3D0)=0D
---Type <return> to continue, or q <return> to quit---=0D
at ../../../ufs/ffs/ffs_softdep.c:2469=0D
#14 0xc02e528a in process_worklist_item (matchmnt=3D0x0, flags=3D0)=0D
at ../../../ufs/ffs/ffs_softdep.c:745=0D
#15 0xc02e4fd0 in softdep_process_worklist (matchmnt=3D0x0)=0D
at ../../../ufs/ffs/ffs_softdep.c:624=0D
#16 0xc026fa0e in sched_sync () at ../../../kern/vfs_subr.c:1751=0D
#17 0xc0208dc4 in fork_exit (callout=3D0xc026f720 <sched_sync>, arg=3D0x0, =
=0D
frame=3D0x0) at ../../../kern/kern_fork.c:872=0D
(kgdb) quit=0D
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