Hello,
yesterday I moved from 2.6.31.y to 2.6.32 and found a reproducable kernel
oops.
Bug is in Linus' tree, too.
I use a Hauppauge Nova-T Stick with dvb_usb_dib0700
I start mplayer (no problems so far) and then alevt. Then there comes
the Oops:
Oops: 0000 [#1] SMP
last sysfs file: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map
Modules linked in: i915 drm_kms_helper video backlight output microcode
loop mt2060 dvb_usb_dib0700 dib7000p dib7000m dib0070 dvb_usb dib8000
dvb_core dib3000mc dibx000_common uhci_hcd ehci_hcd usbcore
Pid: 3429, comm: alevt Not tainted 2.6.33-rc6 #17 MS-7267/MS-7267
EIP: 0060:[<f86bb11b>] EFLAGS: 00210246 CPU: 1
EIP is at dvb_dmxdev_filter_reset+0x1a/0x80 [dvb_core]
EAX: 00000000 EBX: f886b204 ECX: fffffff8 EDX: e0cb3000
ESI: f886b204 EDI: f886b208 EBP: f27ff440 ESP: e0cb3f48
DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process alevt (pid: 3429, ti=e0cb3000 task=e9dcdb20 task.ti=e0cb3000)
Stack:
00000008 f886b204 f75bc88c f86bb1b9 f27ff440 f886b27c f75bc8d0 00000008
<0> f7111744 f6e5fc54 f27ff440 c1074013 f7111744 f741dcc0 f6e5fc54
00000000
<0> f27ff440 f74673c0 e0cb3000 c1071a92 f74673c0 00000003 080674e8
c1071af2
Call Trace:
[<f86bb1b9>] ? dvb_demux_release+0x38/0x107 [dvb_core]
[<c1074013>] ? __fput+0xd5/0x169
[<c1071a92>] ? filp_close+0x45/0x4b
[<c1071af2>] ? sys_close+0x5a/0x8d
[<c1002710>] ? sysenter_do_call+0x12/0x26
[<c12b0000>] ? pci_read_bridge_bases+0x173/0x2fe
Code: 75 dd 8d 46 54 e8 c2 86 00 00 31 c0 5b 5e 5f 5d c3 57 56 53 89 c3 83
78 4c 01 76 6f 83 78 48 02 75 49 8b 40 04 8d 7b 04 8d 48 f8 <8b> 41 08 8d
70 f8 eb 28 8b 41 08 8b 51 0c 89 50 04 89 02 c7 41
EIP: [<f86bb11b>] dvb_dmxdev_filter_reset+0x1a/0x80 [dvb_core] SS:ESP
0068:e0cb3f48
CR2: 0000000000000000
---[ end trace 629e2045091796f7 ]---
I bisected this down to:
root@scratchy:/data/kernel/linux-2.6# git bisect bad
1cb662a3144992259edfd3cf9f54a6b25a913a0f is first bad commit
commit 1cb662a3144992259edfd3cf9f54a6b25a913a0f
Author: Andreas Oberritter <obi@xxxxxxxxxxx>
Date: Tue Jul 14 20:28:50 2009 -0300
V4L/DVB (12275): Add two new ioctls: DMX_ADD_PID and DMX_REMOVE_PID
...
Reverting the patch on top of 2.6.33-rc6, I can start mplayer
and alevt with no problems.
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