Message-ID: <49AFD94D.5020000@yahoo.fr>
Date:	Thu, 05 Mar 2009 14:53:17 +0100
From:	strawks <strawks@...oo.fr>
To:	linux-kernel@...r.kernel.org
Subject: oops in pwc_reset_buffers

Hi all,

On 2.6.29-rc6, when resuming from suspend to RAM I got the following 
oops when motion tried to open /dev/video0. Just ask me if you need some 
additionnal info (full log attached).

regards,
strawks

Mar  5 08:26:38 evangeline kernel: [109985.797284] BUG: unable to handle 
kernel NULL pointer dereference at 0000000000000008
Mar  5 08:26:38 evangeline kernel: [109985.797290] IP: 
[<ffffffffa01d1439>] pwc_reset_buffers+0x4a/0xdd [pwc]
Mar  5 08:26:38 evangeline kernel: [109985.797299] PGD 51dad067 PUD 
18485067 PMD 0
Mar  5 08:26:38 evangeline kernel: [109985.797302] Oops: 0002 [#1] SMP
Mar  5 08:26:38 evangeline kernel: [109985.797305] last sysfs file: 
/sys/class/video4linux/video0/index
Mar  5 08:26:38 evangeline kernel: [109985.797307] CPU 0
Mar  5 08:26:38 evangeline kernel: [109985.797308] Modules linked in: 
i915 drm i2c_algo_bit acpi_cpufreq cpufreq_conservative 
cpufreq_powersave cpufreq_userspace cpufreq_stats cpufreq_ondemand 
freq_table ipv6 fuse coretemp it87 hwmon_vid sbp2 loop 
snd_hda_codec_intelhdmi snd_hda_codec_realtek snd_usb_audio 
snd_hda_intel snd_usb_lib snd_hda_codec snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_pcm snd_hwdep snd_seq snd_timer snd_seq_device pwc 
i2c_i801 psmouse snd videodev v4l1_compat i2c_core serio_raw iTCO_wdt 
snd_page_alloc soundcore pcspkr v4l2_compat_ioctl32 joydev intel_agp 
button evdev ext3 jbd mbcache ide_gd_mod ata_piix ata_generic libata 
scsi_mod hid_logitech ff_memless usbhid hid ohci1394 ieee1394 
ide_pci_generic it8213 ide_core ehci_hcd r8169 mii uhci_hcd thermal 
processor fan thermal_sys
Mar  5 08:26:38 evangeline kernel: [109985.797356] Pid: 26749, comm: 
motion Not tainted 2.6.29-rc6 #1 EG45M-DS2H
Mar  5 08:26:38 evangeline kernel: [109985.797359] RIP: 
0010:[<ffffffffa01d1439>]  [<ffffffffa01d1439>] 
pwc_reset_buffers+0x4a/0xdd [pwc]
Mar  5 08:26:38 evangeline kernel: [109985.797366] RSP: 
0018:ffff880018519cb8  EFLAGS: 00010046
Mar  5 08:26:38 evangeline kernel: [109985.797368] RAX: 0000000000000000 
RBX: ffff880037968c00 RCX: 0000000000000000
Mar  5 08:26:38 evangeline kernel: [109985.797370] RDX: ffffffff805852b8 
RSI: 0000000000000296 RDI: 0000000000000000
Mar  5 08:26:38 evangeline kernel: [109985.797372] RBP: ffff880037968e70 
R08: 0000000000000003 R09: 0000000000000000
Mar  5 08:26:38 evangeline kernel: [109985.797375] R10: 0000000000000000 
R11: ffffffff804697f2 R12: 0000000000000001
Mar  5 08:26:38 evangeline kernel: [109985.797377] R13: 000000000000000a 
R14: 00000000000000f0 R15: 0000000000000140
Mar  5 08:26:38 evangeline kernel: [109985.797379] FS: 
00007faba7078950(0000) GS:ffffffff80671000(0000) knlGS:0000000000000000
Mar  5 08:26:38 evangeline kernel: [109985.797382] CS:  0010 DS: 0000 
ES: 0000 CR0: 000000008005003b
Mar  5 08:26:38 evangeline kernel: [109985.797384] CR2: 0000000000000008 
CR3: 00000000533a7000 CR4: 00000000000406e0
Mar  5 08:26:38 evangeline kernel: [109985.797386] DR0: 0000000000000000 
DR1: 0000000000000000 DR2: 0000000000000000
Mar  5 08:26:38 evangeline kernel: [109985.797388] DR3: 0000000000000000 
DR6: 00000000ffff0ff0 DR7: 0000000000000400
Mar  5 08:26:38 evangeline kernel: [109985.797391] Process motion (pid: 
26749, threadinfo ffff880018518000, task ffff88007b3b0050)
Mar  5 08:26:38 evangeline kernel: [109985.797393] Stack:
Mar  5 08:26:38 evangeline kernel: [109985.797394]  0000000000000001 
0000000000000000 ffff880037968c00 ffffffffa01d270d
Mar  5 08:26:38 evangeline kernel: [109985.797397]  0000000000000000 
00000000c0d05605 ffff88007b8ac080 ffff880037968c00
Mar  5 08:26:38 evangeline kernel: [109985.797401]  ffff88007a8c5400 
0000000000000000 0000000000000000 ffffffffa01d616c
Mar  5 08:26:38 evangeline kernel: [109985.797405] Call Trace:
Mar  5 08:26:38 evangeline kernel: [109985.797408]  [<ffffffffa01d270d>] 
? pwc_try_video_mode+0x2d/0xa5 [pwc]
Mar  5 08:26:38 evangeline kernel: [109985.797414]  [<ffffffffa01d616c>] 
? pwc_video_do_ioctl+0xe8b/0x127b [pwc]
Mar  5 08:26:38 evangeline kernel: [109985.797421]  [<ffffffff802379d7>] 
? default_wake_function+0x0/0x9
Mar  5 08:26:38 evangeline kernel: [109985.797426]  [<ffffffffa01a1a46>] 
? video_usercopy+0x17a/0x217 [videodev]
Mar  5 08:26:38 evangeline kernel: [109985.797433]  [<ffffffffa01d52e1>] 
? pwc_video_do_ioctl+0x0/0x127b [pwc]
Mar  5 08:26:38 evangeline kernel: [109985.797439]  [<ffffffffa01d164c>] 
? pwc_video_ioctl+0x65/0x7f [pwc]
Mar  5 08:26:38 evangeline kernel: [109985.797446]  [<ffffffffa01a110b>] 
? v4l2_ioctl+0x38/0x3a [videodev]
Mar  5 08:26:38 evangeline kernel: [109985.797451]  [<ffffffff802c2aa3>] 
? vfs_ioctl+0x56/0x6c
Mar  5 08:26:38 evangeline kernel: [109985.797455]  [<ffffffff802c2ef2>] 
? do_vfs_ioctl+0x439/0x472
Mar  5 08:26:38 evangeline kernel: [109985.797458]  [<ffffffff802b74c3>] 
? vfs_write+0x121/0x156
Mar  5 08:26:38 evangeline kernel: [109985.797462]  [<ffffffff802c2f7c>] 
? sys_ioctl+0x51/0x70
Mar  5 08:26:38 evangeline kernel: [109985.797465]  [<ffffffff8020bfea>] 
? system_call_fastpath+0x16/0x1b
Mar  5 08:26:38 evangeline kernel: [109985.797469] Code: 00 00 00 00 48 
c7 83 f0 00 00 00 00 00 00 00 48 89 c6 44 8b 05 81 23 01 00 31 ff 31 c9 
eb 36 48 89 c8 48 03 83 d0 00 00 00 85 ff <c7> 40 08 00 00 00 00 48 8b 
93 d0 00 00 00 7e 0c 48 8d 44 0a e8
Mar  5 08:26:38 evangeline kernel: [109985.797497] RIP 
[<ffffffffa01d1439>] pwc_reset_buffers+0x4a/0xdd [pwc]
Mar  5 08:26:38 evangeline kernel: [109985.797503]  RSP <ffff880018519cb8>
Mar  5 08:26:38 evangeline kernel: [109985.797505] CR2: 0000000000000008
Mar  5 08:26:38 evangeline kernel: [109985.797507] ---[ end trace 
9eae6837a465e0c1 ]---
Mar  5 08:27:08 evangeline motion: [0] Thread 1 - Watchdog timeout, 
trying to do a graceful restart
Mar  5 08:27:08 evangeline motion: [0] httpd Closing
Mar  5 08:27:08 evangeline motion: [0] httpd thread exit
Mar  5 08:28:08 evangeline motion: [0] Thread 1 - Watchdog timeout, did 
NOT restart graceful,killing it!
Mar  5 08:28:08 evangeline motion: [0] Calling vid_close() from 
motion_cleanup

View attachment "pwc_oops.txt" of type "text/plain" (25502 bytes)

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