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Date: Mon, 15 Oct 2007 14:54:49 -0200
From: Marcus Alves Grando <mnag@FreeBSD.org>
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To: Tim Bishop <tim@bishnet.net>
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Cc: Joe Marcus Clarke <marcus@FreeBSD.org>, Current@FreeBSD.org
Subject: Re: panic: ffs_blkfree: freeing free block
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Ok. +1

My backtrace:

(kgdb) bt
#0  doadump () at pcpu.h:195
#1  0xc0608a87 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
#2  0xc0608d49 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:563
#3  0xc07b3bb4 in ffs_blkfree (ump=0xc3edca00, fs=0xc3f17000, 
devvp=0xc3f8abb0, bno=7785608, size=16384, inum=1931884)
     at /usr/src/sys/ufs/ffs/ffs_alloc.c:1893
#4  0xc07c7578 in indir_trunc (freeblks=0xc4e0a500, dbn=30913952, 
level=0, lbn=12, countp=0xe46e9c4c) at 
/usr/src/sys/ufs/ffs/ffs_softdep.c:2896
#5  0xc07c7857 in handle_workitem_freeblocks (freeblks=0xc4e0a500, 
flags=0) at /usr/src/sys/ufs/ffs/ffs_softdep.c:2746
#6  0xc07c8fee in process_worklist_item (mp=0xc3fee538, flags=Variable 
"flags" is not available.
) at /usr/src/sys/ufs/ffs/ffs_softdep.c:963
#7  0xc07ca012 in softdep_process_worklist (mp=0xc3fee538, full=0) at 
/usr/src/sys/ufs/ffs/ffs_softdep.c:847
#8  0xc07cc4dd in softdep_flush () at /usr/src/sys/ufs/ffs/ffs_softdep.c:758
#9  0xc05e7fa9 in fork_exit (callout=0xc07cc060 <softdep_flush>, 
arg=0x0, frame=0xe46e9d38) at /usr/src/sys/kern/kern_fork.c:796
#10 0xc0843b50 in fork_trampoline () at 
/usr/src/sys/i386/i386/exception.s:205

Regards

Tim Bishop wrote:
> On Sun, Sep 30, 2007 at 02:03:07PM -0400, Joe Marcus Clarke wrote:
>> dev = ad6s1e, block = 22287592, fs = /space
>> panic: ffs_blkfree: freeing free block
>> cpuid = 0
>> KDB: enter: panic
>> Physical memory: 2038 MB
>> Dumping 351 MB: 336 320 304 288 272 256 240 224 208 192 176 160 144 128
>> 112 96 80 64 48 32 16
> 
> I'll helpfully add a "me too" here. But my system can't even manage a
> dump:
> 
> dev = mirror/gm0s1f, block = 2754352, fs = /u1
> panic: ffs_blkfree: freeing free block
> cpuid = 1
> Uptime: 3h24m58s
> Physical memory: 1013 MB
> Dumping 202 MB:
> Fatal double fault:
> eip = 0xc073e8b9
> esp = 0xe415dfd4
> ebp = 0xe415e048
> cpuid = 0; apic id = 00
> 
> Has anyone found a fix yet?
> 
> Tim.
> 

-- 
Marcus Alves Grando
marcus(at)sbh.eng.br | Personal
mnag(at)FreeBSD.org  | FreeBSD.org