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Date: Tue, 22 May 2007 03:25:48 -0400
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, zohar@us.ibm.com, kjhall@us.ibm.com
Subject: Re: 2.6.22-rc1-mm1: evm BUG when reading sysfs file
Message-ID: <20070522072548.GA9067@nineveh.local>
Mail-Followup-To: Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel@vger.kernel.org, zohar@us.ibm.com, kjhall@us.ibm.com
References: <20070515201914.16944e04.akpm@linux-foundation.org>
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From: jfannin@gmail.com (Joseph Fannin)
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On Tue, May 15, 2007 at 08:19:14PM -0700, Andrew Morton wrote:
>
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc1/2.6.22-rc1-mm1/

I've been getting this since 2.6.21-rc7-mm1:

[    2.379310] BUG: unable to handle kernel paging request at virtual address 4400d340
[    2.379491]  printing eip:
[    2.379573] c021c978
[    2.379656] *pdpt = 000000000353c001
[    2.379739] *pde = 0000000000000000
[    2.379824] Oops: 0000 [#1]
[    2.379906] PREEMPT SMP
[    2.380059] Modules linked in: thermal processor dm_mod
[    2.380288] CPU:    0
[    2.380289] EIP:    0060:[<c021c978>]    Not tainted VLI
[    2.380291] EFLAGS: 00010297   (2.6.22-rc1-mm1 #2)
[    2.380547] EIP is at vsnprintf+0x448/0x5d0
[    2.380633] eax: 4400d340   ebx: c348f034   ecx: 4400d340   edx: fffffffe
[    2.380721] esi: c03e0100   edi: 4400d340   ebp: c357ecc0   esp: c357ec68
[    2.380810] ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0068
[    2.380898] Process udevtrigger (pid: 686, ti=c357e000 task=c1876df0 task.ti=c357e000)
[    2.380987] Stack: c348f014 00000fec c03e1c60 c03e3cec c357eccc c0499b88 c357ece0 c0282513
[    2.381428]        c348f014 00000fec 3cb70fcb c348f034 ffffffff 00000000 ffffffff ffffffff
[    2.381867]        ffffffff fffffffe c03e017c c357ed18 00000034 c0494a20 c357ece0 c021cb9f
[    2.382305] Call Trace:
[    2.382470]  [<c021cb9f>] sprintf+0x1f/0x30
[    2.382594]  [<c02815ed>] show_uevent+0xed/0x130
[    2.382720]  [<c0281163>] dev_attr_show+0x23/0x30
[    2.382843]  [<c01dc077>] sysfs_read_file+0x97/0x140
[    2.382968]  [<c019502f>] vfs_read+0xaf/0x180
[    2.383096]  [<c0198c3a>] kernel_read+0x3a/0x50
[    2.383221]  [<c01f126c>] evm_calc_hash+0x11c/0x240
[    2.383347]  [<c01efd39>] evm_file_free+0xb9/0x330
[    2.383470]  [<c0195a3a>] __fput+0xba/0x180
[    2.383593]  [<c0195c32>] fput+0x22/0x40
[    2.383715]  [<c0192e07>] filp_close+0x47/0x70
[    2.383839]  [<c0194109>] sys_close+0x69/0xc0
[    2.383965]  [<c01043c8>] syscall_call+0x7/0xb
[    2.384092]  [<b7ebd0a7>] 0xb7ebd0a7
[    2.384212]  =======================
[    2.384295] INFO: lockdep is turned off.
[    2.384379] Code: 21 fd ff ff c6 03 25 e9 19 fd ff ff 8d 4f 04 b8
3b a2 3d c0 8b 55 e4 89 4d 08 8b 3f 81 ff ff 0f 00 00 0f 46 f8 89 f9
89 c8 eb 06 <80> 38 00 74 07 40 4a 83 fa ff 75 f4 29 c8 89 c6 8b 45 e0
f6 45
[    2.386787] EIP: [<c021c978>] vsnprintf+0x448/0x5d0 SS:ESP 0068:c357ec68

    This comes a bit after IMA bails out successfully, if that's relevant:

[    1.708761] ima (ima_init): No TPM chip found(rc = -19), activating
TPM-bypass!

--
Joseph Fannin
jfannin@gmail.com

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