From: Andrew Morton <akpm@osdl.org>
To: Badari Pulavarty <pbadari@us.ibm.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.6.10-mm1 panic in sysfs ?
Date: Wed, 5 Jan 2005 16:52:41 -0800 [thread overview]
Message-ID: <20050105165241.481473a3.akpm@osdl.org> (raw)
In-Reply-To: <1104946602.4000.22.camel@dyn318077bld.beaverton.ibm.com>
Badari Pulavarty <pbadari@us.ibm.com> wrote:
>
> Hi Andrew,
>
> I get a panic in sysfs_readdir() while booting 2.6.10-mm1
> kernel. Known fixes ?
>
It's news to me.
> Unable to handle kernel NULL pointer dereference at virtual address 00000020
> printing eip:
> c109c8ef
> *pde = 0191c001
> Oops: 0000 [#1]
> SMP
> Modules linked in:
> CPU: 2
> EIP: 0060:[<c109c8ef>] Not tainted VLI
> EFLAGS: 00010282 (2.6.10-mm1kexec)
What is "2.6.10mm1kexec"?
> EIP is at sysfs_readdir+0xef/0x280
> eax: 00000000 ebx: c15e1160 ecx: 0000000c edx: 00000020
> esi: c15e1164 edi: c15dd72d ebp: c1a7df78 esp: c1a7df3c
> ds: 007b es: 007b ss: 0068
> Process getcfg (pid: 1927, threadinfo=c1a7c000 task=c2ba3040)
Try to work out what arguments are being passed to `getcfg', then run it by
hand, under strace, to see what /sysfs file is being accessed when it oopses.
> Stack: 00000001 00000000 00000017 00000004 c156d62c 0000000c c15dd720 c21bf324
> c156d620 c1071f80 c1a7dfa0 c1c837e0 c131caa0 c1c837e0 c1587428 c1a7df94
> c1071e48 c1a7dfa0 c1071f80 c1a7c000 0804f944 fffffff7 c1a7dfbc c10720aa
> Call Trace:
> [<c1004dc6>] show_stack+0xa6/0xb0
> [<c1004f42>] show_registers+0x152/0x1c0
> [<c100514d>] die+0xed/0x180
> [<c1018b6d>] do_page_fault+0x45d/0x6e9
> [<c1004a2b>] error_code+0x2b/0x30
> [<c1071e48>] vfs_readdir+0x98/0xb0
> [<c10720aa>] sys_getdents+0x6a/0xd0
> [<c1003f31>] sysenter_past_esp+0x52/0x75
> Code: eb 89 d8 e8 c4 ea ff ff 89 45 dc b9 ff ff ff ff 31 c0 8b 7d dc f2 ae f7 d1 49 89 4d d8 8b 43 20 85 c0 0f 84 37 01 00 00 8b 40 0c <8b> 50 20 0f b7 43 1c 89 54 24 08 c1 e8 0c 89 44 24 0c 8b 4d f0
>
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next prev parent reply other threads:[~2005-01-06 0:52 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-05 17:36 2.6.10-mm1 panic in sysfs ? Badari Pulavarty
2005-01-06 0:52 ` Andrew Morton [this message]
2005-01-06 0:39 ` Badari Pulavarty
2005-01-06 8:25 ` Maneesh Soni
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