http://bugzilla.kernel.org/show_bug.cgi?id=6893
Summary: kernel oops with radeon and mythfrontend
Kernel Version: 2.6.18-rc2
Status: NEW
Severity: normal
Owner: [EMAIL PROTECTED]
Submitter: [EMAIL PROTECTED]
Most recent kernel where this bug did not occur: 2.6.15.5
Distribution: debian
Hardware Environment: IBM Thinkpad R50, ATI Radeon Mobility 9000 M9, Wideview
DVB-T USB
Software Environment: mythtv 0.19-0.10, xorg 7.0.22
Problem Description:
I am getting the kernel oops shown below, when trying to watch live-TV
or recordings with mythfrontend. I tried with different pre-compiled mythtv
binaries on a debian linux (0.19-0.6sarge1, 0.19-0.7 and 0.19-0.10), with
vanilla kernels 2.6.17.4 and 2.6.18-rc2.
The oops doesn't occur with a 2.6.15.5 kernel.
Jul 24 22:05:26 tyron kernel: BUG: unable to handle kernel NULL pointer
dereference at virtual address 00000004
Jul 24 22:05:26 tyron kernel: printing eip:
Jul 24 22:05:26 tyron kernel: c0124851
Jul 24 22:05:26 tyron kernel: *pde = 00000000
Jul 24 22:05:26 tyron kernel: Oops: 0002 [#5]
Jul 24 22:05:26 tyron kernel: Modules linked in: videodev v4l1_compat
v4l2_common radeon drm bnep rfcomm hidp l2cap pcmcia autofs4 yenta_socket
rsrc_nonstatic pcmcia_core 8250_pci 8250 serial_core snd_intel8x0 snd_ac97_codec
snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd snd_page_alloc
ehci_hcd dvb_usb_dtt200u dvb_usb dvb_core firmware_class dvb_pll i2c_core
hci_usb bluetooth uhci_hcd usbcore sg ide_scsi scsi_mod evdev ibm_acpi thermal
ac button battery fan processor e1000
Jul 24 22:05:26 tyron kernel: CPU: 0
Jul 24 22:05:26 tyron kernel: EIP: 0060:[add_wait_queue+13/29] Not
tainted VLI
Jul 24 22:05:26 tyron kernel: EFLAGS: 00210046 (2.6.18-rc2 #1)
Jul 24 22:05:26 tyron kernel: EIP is at add_wait_queue+0xd/0x1d
Jul 24 22:05:26 tyron kernel: eax: df4fe1f8 ebx: 00000000 ecx: d00c3ed0
edx: d00c3ec4
Jul 24 22:05:26 tyron kernel: esi: 00200246 edi: 0011c80b ebp: 00000000
esp: d00c3e94
Jul 24 22:05:26 tyron kernel: ds: 007b es: 007b ss: 0068
Jul 24 22:05:26 tyron kernel: Process mythfrontend (pid: 24512, ti=d00c2000
task=d2765550 task.ti=d00c2000)Jul 24 22:05:26 tyron kernel: Stack: df4fe000
d00c3eb8 e0a9899e c61db140 00000000 d2765550 c01128c6 00000000
Jul 24 22:05:26 tyron kernel: 00000000 00000000 00000000 c014d4d1
00000000 d2765550 c01128c6 00000000
Jul 24 22:05:26 tyron kernel: 00000000 d00c3f08 b0bd20f0 00000010
0000003a df4fe000 df4fe000 00000000
Jul 24 22:05:26 tyron kernel: Call Trace:
Jul 24 22:05:26 tyron kernel: [pg0+544074142/1069827072]
radeon_driver_vblank_wait+0xa5/0x126 [radeon]
Jul 24 22:05:26 tyron kernel: [default_wake_function+0/18]
default_wake_function+0x0/0x12
Jul 24 22:05:26 tyron kernel: [chrdev_open+234/259] chrdev_open+0xea/0x103
Jul 24 22:05:26 tyron kernel: [default_wake_function+0/18]
default_wake_function+0x0/0x12
Jul 24 22:05:26 tyron kernel: [pg0+543886485/1069827072]
drm_wait_vblank+0x182/0x1c6 [drm]
Jul 24 22:05:26 tyron kernel: [handle_IRQ_event+33/73]
handle_IRQ_event+0x21/0x49
Jul 24 22:05:26 tyron kernel: [pg0+543881309/1069827072] drm_ioctl+0x13a/0x175
[drm]
Jul 24 22:05:26 tyron kernel: [mask_and_ack_8259A+110/173]
mask_and_ack_8259A+0x6e/0xad
Jul 24 22:05:26 tyron kernel: [pg0+543886099/1069827072]
drm_wait_vblank+0x0/0x1c6 [drm]
Jul 24 22:05:26 tyron kernel: [mask_and_ack_8259A+110/173]
mask_and_ack_8259A+0x6e/0xad
Jul 24 22:05:26 tyron kernel: [do_ioctl+73/79] do_ioctl+0x49/0x4f
Jul 24 22:05:26 tyron kernel: [mask_and_ack_8259A+110/173]
mask_and_ack_8259A+0x6e/0xad
Jul 24 22:05:26 tyron kernel: [vfs_ioctl+368/381] vfs_ioctl+0x170/0x17d
Jul 24 22:05:26 tyron kernel: [mask_and_ack_8259A+110/173]
mask_and_ack_8259A+0x6e/0xad
Jul 24 22:05:26 tyron kernel: [sys_ioctl+43/69] sys_ioctl+0x2b/0x45
Jul 24 22:05:26 tyron kernel: [mask_and_ack_8259A+110/173]
mask_and_ack_8259A+0x6e/0xad
Jul 24 22:05:26 tyron kernel: [syscall_call+7/11] syscall_call+0x7/0xb
Jul 24 22:05:26 tyron kernel: [mask_and_ack_8259A+110/173]
mask_and_ack_8259A+0x6e/0xad
Jul 24 22:05:26 tyron kernel: Code: 9c d8 30 c0 e8 7f 0d 18 00 89 d8 5b c3 90 83
ec 10 8b 44 24 14 89 00 89 40 04 83 c4 10 c3 56 53 83 22 fe 9c 5e fa 8b 18 8d 4a
0c <89> 4b 04 89 5a 0c 89 41 04 89 08 56 9d 5b 5e c3 56 53 83 0a 01
Jul 24 22:05:26 tyron kernel: EIP: [add_wait_queue+13/29]
add_wait_queue+0xd/0x1d SS:ESP 0068:d00c3e94
Steps to reproduce:
mythfrontend->Watch TV
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