linux-kernel - v4l oops in 2.6.25-rc7

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Message-ID: <20080327230430.GA28795@codemonkey.org.uk>
Date:	Thu, 27 Mar 2008 19:04:30 -0400
From:	Dave Jones <davej@...emonkey.org.uk>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Cc:	mchehab@...radead.org
Subject: v4l oops in 2.6.25-rc7

Booted up with an ancient bt848 card present and got this..


BUG: unable to handle kernel NULL pointer dereference at 000001e0
IP: [<c0500ba2>] strlen+0xb/0x15
*pde = 02e0d067 *pte = 00000000 
Oops: 0000 [#1] SMP 
Modules linked in: sha256_generic aes_generic cbc dm_crypt crypto_blkcipher dm_emc dm_round_robin dm_multipath dm_snapshot dm_mirror dm_zero dm_mod xfs jfs reiserfs lock_nolock gfs2 msdos linear raid10 raid456 async_xor async_memcpy async_tx xor raid1 raid0 sg sr_mod cdrom sd_mod ata_generic bttv videodev v4l1_compat ir_common compat_ioctl32 i2c_algo_bit v4l2_common videobuf_dma_sg videobuf_core btcx_risc tveeprom i2c_core e100 tulip ehci_hcd mii ata_piix pata_acpi ohci_hcd libata uhci_hcd iscsi_tcp libiscsi scsi_transport_iscsi scsi_mod ext2 ext3 jbd ext4dev jbd2 mbcache crc16 squashfs pcspkr edd floppy loop nfs lockd nfs_acl sunrpc vfat fat cramfs

Pid: 1513, comm: hald-probe-vide Not tainted (2.6.25-0.161.rc7.fc9.i586 #1)
EIP: 0060:[<c0500ba2>] EFLAGS: 00010246 CPU: 0
EIP is at strlen+0xb/0x15
EAX: 00000000 EBX: 000001e0 ECX: ffffffff EDX: 000001e0
ESI: 00000020 EDI: 000001e0 EBP: c2e8bdfc ESP: c2e8bdf8
 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process hald-probe-vide (pid: 1513, ti=c2e8b000 task=c2dda000 task.ti=c2e8b000)
Stack: c2e8bf34 c2e8be14 c04ff683 c2e8bedc c2e8becc cf116a70 c2e8bf34 c2e8be24 
       d0a7d931 d0a7d903 c2fd1500 c2e8bea4 d0a4dfc1 c2e8be40 80685600 c2fd1500 
       cd68e050 d0a9830c c2dda6c0 c2e8be4c c040a6e2 c2e8be60 c2e8be64 c040a9b0 
Call Trace:
 [<c04ff683>] ? strlcpy+0x17/0x48
 [<d0a7d931>] ? radio_querycap+0x2e/0x5b [bttv]
 [<d0a7d903>] ? radio_querycap+0x0/0x5b [bttv]
 [<d0a4dfc1>] ? __video_do_ioctl+0x494/0x295e [videodev]
 [<c040a6e2>] ? sched_clock+0x8/0xb
 [<c040a9b0>] ? native_sched_clock+0xb5/0xd1
 [<d0a5063b>] ? video_ioctl2+0x1b0/0x24d [videodev]
 [<c063bb4a>] ? __down_failed+0xa/0x10
 [<c0495d96>] ? vfs_ioctl+0x4e/0x67
 [<c0495fe8>] ? do_vfs_ioctl+0x239/0x24c
 [<c04dbb8d>] ? selinux_file_ioctl+0xa8/0xab
 [<c049603b>] ? sys_ioctl+0x40/0x5d
 [<c0405d52>] ? syscall_call+0x7/0xb
 =======================
Code: 5d c3 55 89 e5 56 89 c6 89 d0 88 c4 ac 38 e0 74 09 84 c0 75 f7 be 01 00 00 00 89 f0 48 5e 5d c3 55 83 c9 ff 89 e5 57 89 c7 31 c0 <f2> ae f7 d1 49 89 c8 5f 5d c3 55 89 e5 57 31 ff 85 c9 74 0e 89 
EIP: [<c0500ba2>] strlen+0xb/0x15 SS:ESP 0068:c2e8bdf8
---[ end trace fba34738c02be064 ]---


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