http://bugzilla.kernel.org/show_bug.cgi?id=6893
[EMAIL PROTECTED] changed:
What |Removed |Added
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CC| |[EMAIL PROTECTED]
------- Additional Comments From [EMAIL PROTECTED] 2007-01-31 20:59 -------
I've encountered the same issue as the original bug reporter. I'm using 2.6.18.3
with a Radeon 9800 card. I get the error whenever I use live tv or play a
recording via mythfrontend. I was previously using 2.6.10 with the same
hardware/software and did not encounter this error. Removing the radeon kernel
module makes the error go away but also takes away my hardware acceleration,
etc. Here's the oops, please let me know if I can provide more information:
BUG: unable to handle kernel NULL pointer dereference at virtual address
00000004
printing eip:
c0120ff4
*pde = 00000000
Oops: 0002 [#1]
Modules linked in: radeonfb radeon joydev usbhid usbkbd ivtv saa7127 msp3400
saa7115 tuner bttv video_buf ir_common btcx_risc firmware_class cx2341x tveeprom
ati_remote usbvnetr i2c_ali15x3 snd_pcm_oss snd_mixer_oss snd_cmipci gameport
snd_opl3_lib snd_hwdep
CPU: 0
EIP: 0060:[<c0120ff4>] Tainted: P VLI
EFLAGS: 00010046 (2.6.18.3 #15)
EIP is at add_wait_queue+0x10/0x1d
eax: c49d59f8 ebx: 00000000 ecx: c2913ef0 edx: c2913ee4
esi: 00000246 edi: 0005b1bf ebp: 00000000 esp: c2913eb0
ds: 007b es: 007b ss: 0068
Process mythfrontend (pid: 9204, ti=c2912000 task=c15ab030 task.ti=c2912000)
Stack: c2913ee4 c49d5800 d15ec7b0 c2913f28 00000246 00000000 c15ab030 c010fea5
00000000 00000000 cf455620 ca10f398 c029a3aa 00000000 c15ab030 c010fea5
00000000 00000000 cf455620 c2913f24 b00bd130 0000003a c49d5800 c49d5800
Call Trace:
[<d15ec7b0>] radeon_driver_vblank_wait+0xa7/0x126 [radeon]
[<c010fea5>] default_wake_function+0x0/0xc
[<c029a3aa>] drm_stub_open+0xa5/0x113
[<c010fea5>] default_wake_function+0x0/0xc
[<c029b3e7>] drm_wait_vblank+0x16c/0x1ad
[<c029a079>] drm_ioctl+0x145/0x17c
[<c029b27b>] drm_wait_vblank+0x0/0x1ad
[<c010643a>] dma_release_declared_memory+0x2c/0x2e
[<c0150591>] do_ioctl+0x3d/0x42
[<c01507b1>] vfs_ioctl+0x178/0x186
[<c01507e9>] sys_ioctl+0x2a/0x41
[<c0102399>] sysenter_past_esp+0x56/0x79
[<c010643a>] dma_release_declared_memory+0x2c/0x2e
Code: 00 00 00 00 e8 83 84 25 00 89 d8 5b c3 90 90 83 ec 10 89 00 89 40 04 83 c4
10 c3 56 83 22 fe 53 9c 5e fa 8b 18 8d 4a 0c 89 5a 0c <89> 4b 04 89 08 89 41 04
56 9d 5b
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