[xfs-masters] [Bug 27492] BUG: unable to handle kernel NULL pointer dereference, on high filesystem io

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=27492





--- Comment #9 from Jochen Buchholz <bookwood at security.de>  2011-02-03 23:26:24 ---
(In reply to comment #8)
> The trace in comment #6 is _not a crash_. It's a filesystem shutdown because a
OK - I would not use this word anymore ;-)
> transaction failed. That's what is supposed to happen, and it tells you this:
> 
> Filesystem "dm-7": Corruption of in-memory data detected.  Shutting down
> filesystem: dm-7
> Please umount the filesystem, and rectify the problem(s)
> 
> As to gdb failing to work, try just running "gdb vmlinux" and running
> 'l *(xfs_da_do_buf+0x4c8)' at the command prompt once it has started.....
> 

root at ittest01:~ (master $ u=) # gdb /usr/src/linux/vmlinux
GNU gdb (Gentoo 7.2 p1) 7.2
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /usr/src/linux-2.6.37/vmlinux...(no debugging symbols
found)...done.
(gdb) l *(xfs_da_do_buf+0x4c8)
No symbol table is loaded.  Use the "file" command.

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