Bug 5876
| Summary: | w9968cf oopses with creative webcam go plus | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Diego Calleja (diegocg) |
| Component: | USB | Assignee: | Greg Kroah-Hartman (greg) |
| Status: | CLOSED CODE_FIX | ||
| Severity: | normal | CC: | bunk, maneesh |
| Priority: | P2 | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.15 | Subsystem: | |
| Regression: | --- | Bisected commit-id: | |
| Bug Depends on: | |||
| Bug Blocks: | 5089 | ||
Tried to CC the maintainer but bugzilla tells me that luca.risolia@studio.unibo.it isnot a "valid user name"?? You can only put email addresses into the Cc that are valid Bugzilla accounts. Please try latest kernel, to rule out the sysfs_dirent list corruption due to failure in sysfs_make_dirent, basically the patch from Stephen http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=e80a5dea8e056d8f398be1900d61c581d379f02f It seems to work now |
Most recent kernel where this bug did not occur: Dunno Distribution: Debian testing Hardware Environment: Dual P3 1 GB RAM, Broadcom OSB4/CSB5 OHCI usb chipset, radeon 9200 SE graphics card, IDE disk Software Environment: Kopete 3.5 (kde 3.5) or xawtv Problem Description: I get an oops (not hang) if I plug/unplug the camera quickly while the program is trying to initializate/use the camera Steps to reproduce: 1) Plug in the camera (udev loads the modules) 2) Run xawtv or go to the kopete's 3.5 webcam configuration panel 3) Unplug & plug the camera like mad until you get an oops. I've two different oopses. The first one was taken in 2.6.15-rc5 and the following one the linus' git tree from two days ago or so. Unable to handle kernel NULL pointer dereference at virtual address 0000000c printing eip: c019b162 *pde = 00000000 Oops: 0000 [#1] PREEMPT SMP Modules linked in: ovcamchip w9968cf videodev i2c_core ipt_REJECT radeon drm thermal fan button processor ac battery ipt_MASQUERADE iptable_nat ip_nat ip_conntrack iptable_filter ip_tables usbhid snd_ca0106 snd_rawmidi snd_seq_device snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm parport_pc floppy snd_timer parport ohci_hcd snd pcspkr usbcore e100 soundcore snd_ac97_bus snd_page_alloc CPU: 0 EIP: 0060:[<c019b162>] Not tainted VLI EFLAGS: 00010246 (2.6.15-rc5) EIP is at sysfs_hash_and_remove+0x22/0xef eax: f4789bc8 ebx: f76338a8 ecx: c19b2d40 edx: c533de44 esi: 00000000 edi: f6a79600 ebp: f8962f40 esp: ec721f04 ds: 007b es: 007b ss: 0068 Process kopete (pid: 21843, threadinfo=ec721000 task=c91bfab0) Stack: f6a79600 f4789bc8 e9ce0788 f76338a8 f76338a0 f6a79600 f8962f40 c022e426 00000000 f8962fbc f76338a0 f8870f00 f7094830 f387ed08 c022e488 f4bc0000 f89617c2 ec721f54 f89c1deb f89c8abc f8870f00 f4bc00bc 00000000 f4bc0000 Call Trace: [<c022e426>] class_device_del+0xa6/0x100 [<c022e488>] class_device_unregister+0x8/0x10 [<f89617c2>] video_unregister_device+0x32/0x4d [videodev] [<f89c1deb>] w9968cf_release_resources+0x3b/0xf0 [w9968cf] [<f89c24d0>] w9968cf_release+0x40/0x100 [w9968cf] [<c0163a01>] __fput+0x91/0x180 [<c0162097>] filp_close+0x47/0x90 [<c0103061>] syscall_call+0x7/0xb Code: 26 00 8d bc 27 00 00 00 00 55 57 56 53 83 ec 0c 89 44 24 04 89 14 24 8b 50 10 8b 70 58 85 d2 74 73 f0 ff 4a 78 0f 88 cd 00 00 00 <8b> 46 0c 8d 68 fc 8b 4d 04 0f 18 01 90 83 c6 0c 89 c3 39 f0 89 <6>usb 1-1: OV7620 image sensor initialized usb 1-1: USB disconnect, address 5 usb 1-1: Disconnecting Creative Labs Video Blaster WebCam Go Plus... usb 1-1: Device not present usb 1-1: Device not present usb 1-1: V4L device deregistered: /dev/video0 Unable to handle kernel NULL pointer dereference at virtual address 0000000c printing eip: c0179236 *pde = 00000000 Oops: 0000 [#1] PREEMPT SMP Modules linked in: ovcamchip w9968cf compat_ioctl32 videodev i2c_core ipt_REJECT radeon drm thermal fan button processor ac battery ipt_MASQUERADE iptable_nat ip_nat ip_conntrack iptable_filter ip_tables usbhid snd_ca0106 snd_rawmidi snd_seq_device snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore parport_pc snd_ac97_bus parport snd_page_alloc ide_cd pcspkr e100 floppy ohci_hcd usbcore cdrom CPU: 0 EIP: 0060:[<c0179236>] Not tainted VLI EFLAGS: 00010246 (2.6.15) EIP is at sysfs_hash_and_remove+0x32/0xf0 eax: 00000000 ebx: f6578ea0 ecx: c1955d40 edx: d9afa790 esi: f66dbea0 edi: f8959d20 ebp: f8959d9c esp: e57abf38 ds: 007b es: 007b ss: 0068 Process xawtv (pid: 20014, threadinfo=e57ab000 task=f7caaa70) Stack: f66dbea0 def2e910 00000000 f6578ea0 f66dbea0 f8959d20 f8959d9c c01f0458 00000000 f6578ea0 f8854bdd f36596b4 e72964d0 c01f04b0 e9721000 f89585e4 f89c5513 e9721000 e97218b0 f89c5a4d e7296534 f65cf320 c014dd8f c195a120 Call Trace: [<c01f0458>] class_device_del+0x88/0xd8 [<c01f04b0>] class_device_unregister+0x8/0x10 [<f89585e4>] video_unregister_device+0x3c/0x4a [videodev] [<f89c5513>] w9968cf_release_resources+0x69/0xc6 [w9968cf] [<f89c5a4d>] w9968cf_release+0x3d/0xd3 [w9968cf] [<c014dd8f>] __fput+0x8b/0x137 [<c014c956>] filp_close+0x4e/0x54 [<c01026e7>] sysenter_past_esp+0x54/0x75 Code: 89 44 24 04 89 14 24 8b 40 58 89 44 24 08 8b 44 24 04 8b 50 10 85 d2 0f 84 c4 00 00 00 f0 ff 4a 78 0f 88 c2 00 00 00 8b 44 24 08 <8b> 68 0c e9 85 00 00 00 83 7d 14 00 74 7c 89 e8 e8 e7 fe ff ff <6>usb 1-1: OV7620 image sensor initialized usb 1-1: USB disconnect, address 69 usb 1-1: Disconnecting Creative Labs Video Blaster WebCam Go Plus...