Re: 2.6.18-rc4-mm1 BUG null pointer deref while saving a file

On Fri, 2006-08-18 at 10:24 +0200, Helge Hafting wrote:
Dave Kleikamp wrote:
On Wed, 2006-08-16 at 13:44 +0200, Helge Hafting wrote:

Aug 16 13:20:30 hh kernel: Call Trace:
Aug 16 13:20:30 hh kernel: [<c0466bc7>] __down_failed+0x7/0xc
Aug 16 13:20:30 hh kernel: DWARF2 unwinder stuck at __down_failed+0x7/0xc
Aug 16 13:20:31 hh kernel: Leftover inexact backtrace:
Aug 16 13:20:31 hh kernel: [<c01ed987>] .text.lock.file+0x54/0x9d
Aug 16 13:20:31 hh kernel: [<c01516bd>] __fput+0xb2/0x163
Aug 16 13:20:31 hh kernel: [<c014ee9d>] filp_close+0x3e/0x62
Aug 16 13:20:31 hh kernel: [<c0150168>] sys_close+0x5c/0x6b
Aug 16 13:20:31 hh kernel: [<c01028c9>] sysenter_past_esp+0x56/0x79


By any chance would you be using cifs? This looks just like the bug
that is fixed by this patch:
http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/sfrench/cifs-2.6.git;a=commitdiff;h=e466e4876bf39474e15d0572f2204578137ae7f5

Yes, this is on cifs. I should have mentioned that. Is this patch going
in anyway, or should I test it? I don't know a way of reproducing
the problem.

This git tree is automatically pulled into the -mm build, so it will be
in the next -mm build. The patch causing the problem isn't in mainline
yet, so there is no rush to fix it there.

Shaggy
--
David Kleikamp
IBM Linux Technology Center

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