linux-kernel - 2.6.21-rc4: mmc fails to work, then oopses

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Date:	Thu, 22 Mar 2007 12:37:42 +0100
From:	Pavel Machek <pavel@....cz>
To:	drzeus-mmc@...eus.cx, kernel list <linux-kernel@...r.kernel.org>
Subject: 2.6.21-rc4: mmc fails to work, then oopses

Hi!

(Machine was suspended/resumed before this).

mount /dev/mmc1 /mnt

Buffer I/O error on device mmcblk0p1, logical block 1
BUG: unable to handle kernel NULL pointer dereference at virtual
address 00000024
 printing eip:
c04cb2ec
*pde = 00000000
Oops: 0000 [#1]
SMP
Modules linked in:
CPU:    0
EIP:    0060:[<c04cb2ec>]    Not tainted VLI
EFLAGS: 00010097   (2.6.21-rc4 #413)
EIP is at mmc_prep_request+0x2c/0x50
eax: 00000000   ebx: ecad6134   ecx: 00000000   edx: ecad6134
esi: ecad6134   edi: f797369c   ebp: c04cb490   esp: ecb89f98
ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: 0068
Process mmcqd (pid: 7143, ti=ecb88000 task=c230c570 task.ti=ecb88000)
Stack: f7bd5470 c02450f8 00000003 00000000 00000000 ecad6134 f797369c
f7bd5470
       f797369c c04cb547 fffffffc f7fc1d08 c013cfbc ffffffff ffffffff
c013ced0
       00000000 00000000 00000000 c0104beb f7fc1d00 00000000 00000000
00000000
Call Trace:
 [<c02450f8>] elv_next_request+0x88/0x140
 [<c04cb547>] mmc_queue_thread+0xb7/0xe0
 [<c013cfbc>] kthread+0xec/0xf0
 [<c013ced0>] kthread+0x0/0xf0
 [<c0104beb>] kernel_thread_helper+0x7/0x1c
 =======================

									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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