From: Andrew Morton <akpm@osdl.org>
To: Steven Cole <elenstev@mesatop.com>
Cc: linux-mm@kvack.org, Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: 2.6.2-mm1 problem with umounting reiserfs
Date: Fri, 6 Feb 2004 14:39:17 -0800 [thread overview]
Message-ID: <20040206143917.4e39b215.akpm@osdl.org> (raw)
In-Reply-To: <1076104945.1793.12.camel@spc.esa.lanl.gov>
Steven Cole <elenstev@mesatop.com> wrote:
>
> With kernel 2.6.2-mm1, I got the following when umounting a reiserfs
> file system.
> Unable to handle kernel NULL pointer dereference at virtual address 00000000
> printing eip:
> c012a7b2
> *pde = 00000000
> Oops: 0000 [#1]
> PREEMPT
> CPU: 0
> EIP: 0060:[<c012a7b2>] Not tainted VLI
> EFLAGS: 00210202
> EIP is at destroy_workqueue+0x72/0xe0
> eax: 00000001 ebx: ca55e000 ecx: cfca3364 edx: 00000000
> esi: cfca3360 edi: cfca3320 ebp: cf926670 esp: ca55fe90
> ds: 007b es: 007b ss: 0068
> Process umount (pid: 1743, threadinfo=ca55e000 task=cd6e5940)
> Stack: cf926670 00000001 ca55feb8 cfca1200 c04573c0 ca55ff74 c01acc9d cfca3320
> cfca1200 cf84d688 c040e963 00000001 00000001 00005c46 cfca1200 cf446d78
> ca55fef0 cfca1200 00000000 cfca1200 c019a655 ca55fef0 cfca1200 cf84d688
> Call Trace:
> [<c01acc9d>] do_journal_release+0x4d/0xe0
> [<c019a655>] reiserfs_put_super+0x25/0x180
> [<c0154447>] generic_shutdown_super+0x177/0x1e0
> [<c01544cd>] kill_block_super+0x1d/0x50
> [<c01545df>] deactivate_super+0x5f/0xc0
> [<c016b2cb>] sys_umount+0x4b/0x2f0
> [<c0141226>] do_munmap+0x296/0x3c0
> [<c016b585>] sys_oldumount+0x15/0x19
> [<c03f40d2>] sysenter_past_esp+0x43/0x65
Squish. Thanks.
diff -puN kernel/workqueue.c~cpuhotplug-03-core-workqueue-fix kernel/workqueue.c
--- 25/kernel/workqueue.c~cpuhotplug-03-core-workqueue-fix Fri Feb 6 14:36:04 2004
+++ 25-akpm/kernel/workqueue.c Fri Feb 6 14:36:41 2004
@@ -335,7 +335,7 @@ void destroy_workqueue(struct workqueue_
if (cpu_online(cpu))
cleanup_workqueue_thread(wq, cpu);
}
- list_del(&wq->list);
+ del_workqueue(wq);
unlock_cpu_hotplug();
kfree(wq);
}
_
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next prev parent reply other threads:[~2004-02-06 22:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-06 22:02 Steven Cole
2004-02-06 22:39 ` Andrew Morton [this message]
2004-02-06 23:04 ` Steven Cole
2004-02-07 6:23 ` Rusty Russell
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