Stack Backtraces -- disk related?

[Greg 'groggy' Lehey]

On Thursday,  5 February 2004 at 15:40:06 -0800, David Benfell wrote:
> Hello all,
>
> I've been getting these messages on my console and in my kernel log.
> I'm noticing stuff in there that looks like it has to do with the
> filesystem.  Both the disks on this system are IDE disks, so yes, this
> kind of gets my attention.

>> syscall(2f,2f,2f,bfbfee14,bfbfedc3) at syscall+0x217
>> Xint0x80_syscall() at Xint0x80_syscall+0x1d
>> --- syscall (95), eip = 0x280b8677, esp = 0xbfbfed9c, ebp = 0xbfbfedcc ---
>> Stack backtrace:
>> backtrace(c25d0f00,1,cda99c14,cda99c00,c0718580) at backtrace+0x12
>> getdirtybuf(cda99bf0,0,1,c45b52a8,1) at getdirtybuf+0x2c
>> flush_deplist(c2c27a4c,1,cda99c14) at flush_deplist+0x30
>> flush_inodedep_deps(c217b000,285eb,c087f118,cda99c60,c05fb1e0) at flush_inodedep_deps+0x82
>> softdep_sync_metadata(cda99cb0) at softdep_sync_metadata+0x72
>> ffs_fsync(cda99cb0) at ffs_fsync+0x336
>> fsync(c23f37e0,cda99d14,1,1,292) at fsync+0x10b
>> syscall(2f,2f,2f,bfbfee14,bfbfedc3) at syscall+0x217
>> Xint0x80_syscall() at Xint0x80_syscall+0x1d

> What does it mean?  I'm running 5.2-CURRENT on this system:

If you're running -CURRENT, you should be following the
FreeBSD-current list and be prepared to look for the problems
yourself.  -questions is the wrong mailing list for this.  Looking at
getdirtybuf(), we see:

		if (bp->b_vp == NULL)
			backtrace();

In other words, getdirtybuf() has been passed a corrupt buffer
header.  This is almost certainly a bug.

Greg
--
When replying to this message, please copy the original recipients.
If you don't, I may ignore the reply or reply to the original recipients.
For more information, see http://www.lemis.com/questions.html
See complete headers for address and phone numbers.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 187 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-questions/attachments/20040213/eacf2e05/attachment.bin