Date: Thu, 04 Oct 2007 03:55:11 +0200 From: Rolf Witt <rowi@free.de> To: Current@freebsd.org Subject: Re: panic: ffs_blkfree: freeing free block Message-ID: <470447FF.5070409@free.de> In-Reply-To: <46FFF615.5090108@donut.de> References: <1191175387.92510.6.camel@shumai.marcuscom.com> <46FFF615.5090108@donut.de>
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Here the backtrace from the last panic:
# kgdb kernel.debug /var/crash/vmcore.0
kgdb: kvm_nlist(_stopped_cpus):
kgdb: kvm_nlist(_stoppcbs):
[GDB will not be able to debug user-mode threads:
/usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 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.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd".
Unread portion of the kernel message buffer:
dev = ad4s1f, block = 26012752, fs = /usr
panic: ffs_blkfree: freeing free block
Uptime: 1d5h6m39s
Physical memory: 631 MB
Dumping 152 MB: 137 121 105 89 73 57 41 25 9
#0 doadump () at pcpu.h:195
195 __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) backtrace
#0 doadump () at pcpu.h:195
#1 0xc06328d3 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
#2 0xc0632ad4 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:563
#3 0xc07d48f0 in ffs_blkfree (ump=0xc323ab00, fs=0xc321c800,
devvp=0xc328add0, bno=26012752, size=16384, inum=6506870)
at /usr/src/sys/ufs/ffs/ffs_alloc.c:1893
#4 0xc07e8168 in indir_trunc (freeblks=0xc3c1bd00, dbn=103948864, level=0,
lbn=12, countp=0xd9177c4c) at /usr/src/sys/ufs/ffs/ffs_softdep.c:2896
#5 0xc07e8430 in handle_workitem_freeblocks (freeblks=0xc3c1bd00, flags=0)
at /usr/src/sys/ufs/ffs/ffs_softdep.c:2746
#6 0xc07e9cb8 in process_worklist_item (mp=0xc324b7d4, flags=Variable
"flags" is not available.
)
at /usr/src/sys/ufs/ffs/ffs_softdep.c:963
#7 0xc07ead71 in softdep_process_worklist (mp=0xc324b7d4, full=0)
at /usr/src/sys/ufs/ffs/ffs_softdep.c:847
#8 0xc07ed2ea in softdep_flush () at /usr/src/sys/ufs/ffs/ffs_softdep.c:758
#9 0xc0612211 in fork_exit (callout=0xc07ece70 <softdep_flush>, arg=0x0,
frame=0xd9177d38) at /usr/src/sys/kern/kern_fork.c:796
#10 0xc084fd50 in fork_trampoline () at
/usr/src/sys/i386/i386/exception.s:205
(kgdb)
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