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From: John Baldwin <jhb@freebsd.org>
To: rank1seeker@gmail.com
Subject: Re: UFS related panic (daily <-> find)
Date: Mon, 7 Oct 2013 12:12:05 -0400
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On Wednesday, October 02, 2013 5:40:02 pm rank1seeker@gmail.com wrote:
> > > > > Ok, here is another one, same case, just this time under 
> 9.1-RELEASE-p7
> > > > > 
> > > > > ==============================================
> > > > > Fatal trap 12: page fault while in kernel mode
> > > > > fault virtual address   = 0x25
> > > > > fault code              = supervisor read, page not present
> > > > > instruction pointer     = 0x20:0xc082c552
> > > > > stack pointer           = 0x28:0xe7eed7a8
> > > > > frame pointer           = 0x28:0xe7eed7ac
> > > > > code segment            = base 0x0, limit 0xfffff, type 0x1b
> > > > >                         = DPL 0, pres 1, def32 1, gran 1
> > > > > processor eflags        = interrupt enabled, resume, IOPL = 0
> > > > > current process         = 63645 (find)
> > > > > trap number             = 12
> > > > > panic: page fault
> > > > > Uptime: 11h16m47s
> > > > > Physical memory: 1014 MB
> > > > > Dumping 143 MB: 128 112 96 80 64 48 32 16
> > > > > 
> > > > > #6  0xc0898d4c in calltrap () at 
> /usr/src/sys/i386/i386/exception.s:169
> > > > > #7  0xc082c552 in inodedep_find (inodedephd=Variable "inodedephd" 
> is 
> > > not 
> > > > > available.
> > > > > )
> > > > >     at /usr/src/sys/ufs/ffs/ffs_softdep.c:2073
> > > > 
> > > > Please go to frame 7 and do 'x/i $rip'.
> > > > 
> > > 
> > > (kgdb) up 7
> > > #7  0xc082c552 in inodedep_find (inodedephd=Variable "inodedephd" is 
> not 
> > > available.
> > > ) at /usr/src/sys/ufs/ffs/ffs_softdep.c:2073
> > > 2073    /usr/src/sys/ufs/ffs/ffs_softdep.c: No such file or directory.
> > >         in /usr/src/sys/ufs/ffs/ffs_softdep.c
> > > (kgdb) x/i $rip
> > > Value can't be converted to integer.
> > 
> > Oh, this is i386, use "$eip" instead of "$rip", so 'x/i $eip' at frame 7.
> 
> 
> (kgdb) x/i $eip
> 0xc082c552 <inodedep_find+13>:  cmp    %ecx,0x24(%eax)

Ok, so %eax must be 1.  I think you probably have failing RAM with a stuck bit 
or some such.

-- 
John Baldwin