linux-kernel - oops at sr_block_release [Re: 2.6.23-rc3-mm1]

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Date:	Tue, 28 Aug 2007 13:32:57 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
	SCSI Mailing List <linux-scsi@...r.kernel.org>
Subject: oops at sr_block_release [Re: 2.6.23-rc3-mm1]

Andrew Morton napsal(a):
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc3/2.6.23-rc3-mm1/

I got this during gxine initialization of ocko.tv live stream without any cd in
cdroms:

BUG: unable to handle kernel NULL pointer dereference at virtual address 0000005c
printing eip: f88fbe7a *pde = 00000000
Oops: 0000 [#1] SMP
Modules linked in: ath5k arc4 ecb blkcipher cryptomgr crypto_algapi
rc80211_simple mac80211 cfg80211 nls_cp437 vfat fat usb_storage tun ipv6 floppy
parport_pc parport ohci1394 ieee1394 usbhid sr_mod ehci_hcd cdrom ff_memless

Pid: 2809, comm: hald-addon-stor Not tainted (2.6.23-rc3-mm1 #315)
EIP: 0060:[<f88fbe7a>] EFLAGS: 00010246 CPU: 1
EIP is at sr_block_release+0xb/0x2c [sr_mod]
EAX: 00000000 EBX: 00000000 ECX: f88fbe6f EDX: 00000000
ESI: c21c36c0 EDI: c289a780 EBP: c3729f18 ESP: c3729f10
 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process hald-addon-stor (pid: 2809, ti=c3729000 task=c1c2be40 task.ti=c3729000)
Stack: 00000000 c21c36c0 c3729f38 c018d7ad c21c36cc c1f9ff80 c21c3730 c21c36c0
       c2a6ada0 dcbb3f80 c3729f40 c018d7dc c3729f4c c018e103 00000010 c3729f74
       c016bc5f 00000000 00000000 c217fa80 c1f9ff80 c2a6ada0 dcbb3f80 c1cc6900
Call Trace:
 [<c0105022>] show_trace_log_lvl+0x1a/0x30
 [<c01050dd>] show_stack_log_lvl+0xa5/0xca
 [<c01051d2>] show_registers+0xd0/0x1c1
 [<c01053cd>] die+0x10a/0x24d
 [<c011afbe>] do_page_fault+0x496/0x608
 [<c03768e2>] error_code+0x72/0x78
 [<c018d7ad>] __blkdev_put+0x125/0x14a
 [<c018d7dc>] blkdev_put+0xa/0xc
 [<c018e103>] blkdev_close+0x29/0x2c
 [<c016bc5f>] __fput+0xa6/0x161
 [<c016bea4>] fput+0x22/0x3b
 [<c016960b>] filp_close+0x41/0x67
 [<c016a78c>] sys_close+0x60/0x9f
 [<c01040ce>] syscall_call+0x7/0xb
 =======================
Code: 0c 81 c3 4c 01 00 00 89 5c 24 08 89 44 24 04 c7 04 24 88 cd 8f f8 e8 99 84
82 c7 e9 04 fe ff ff 55 89 e5 56 53 8b 80 04 01 00 00 <8b> 40 5c 8b 70 3c 8d 46
18 e8 cf f6 fe ff 89 c3 85 c0 75 07 89
EIP: [<f88fbe7a>] sr_block_release+0xb/0x2c [sr_mod] SS:ESP 0068:c3729f10

regards,
-- 
Jiri Slaby (jirislaby@...il.com)
Faculty of Informatics, Masaryk University
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