[linux-dvb] Kernel oops on 2.6.6

[Christian Fraenkel <c.fraenkel@gmx.net>]

Hi all!
I am writing a small dvr software for my nova-ci, and noticed that I was 
unable (after some time) to open /dev/adapter0/demux0. (open() blocks)
my dmesg shows the following oops:

dvb_demux_feed_del: feed not in list (type=0 state=0 pid=ffff)
Unable to handle kernel paging request at virtual address eaa1e7a8
 printing eip:
ca85cdcc
*pde = 00000000
Oops: 0002 [#1]
PREEMPT
CPU:    0
EIP:    0060:[<ca85cdcc>]    Not tainted
EFLAGS: 00010202   (2.6.6)
EIP is at dvbdmx_release_ts_feed+0x9c/0xc0 [dvb_core]
eax: 08464180   ebx: c988e300   ecx: c9875170   edx: c0357998
esi: ca8a2100   edi: c988e11c   ebp: 00000001   esp: c505de60
ds: 007b   es: 007b   ss: 0068
Process java (pid: 26082, threadinfo=c505c000 task=c9875170)
Stack: ca8a2100 00000005 ca9a9150 ffffffea ca85a923 c988e11c ca8a2100 
00000005
       00000001 000000bc 00008000 00000000 00000000 00000000 ca9a9150 
ca85af7a
       c988e0d0 c988e10c ca9a91c0 ca9a9150 c988e0d0 ca85b41f ca9a9150 
ca9a9150
Call Trace:
 [<ca85a923>] dvb_dmxdev_filter_start+0x153/0x3f0 [dvb_core]
 [<ca85af7a>] dvb_dmxdev_pes_filter_set+0x5a/0xa0 [dvb_core]
 [<ca85b41f>] dvb_demux_do_ioctl+0x23f/0x250 [dvb_core]
 [<ca86078c>] dvb_usercopy+0x8c/0x140 [dvb_core]
 [<ca859070>] dvb_device_open+0x0/0x1d0 [dvb_core]
 [<c015cc88>] chrdev_open+0xe8/0x210
 [<c01629b6>] open_namei+0xa6/0x410
 [<c015cba0>] chrdev_open+0x0/0x210
 [<c0153071>] dentry_open+0x151/0x220
 [<c0152f18>] filp_open+0x68/0x70
 [<ca85b45f>] dvb_demux_ioctl+0x2f/0x40 [dvb_core]
 [<ca85b1e0>] dvb_demux_do_ioctl+0x0/0x250 [dvb_core]
 [<c0165eb3>] sys_ioctl+0xf3/0x280
 [<c01061a7>] syscall_call+0x7/0xb

Code: c7 84 87 8c 00 00 00 00 00 00 00 89 d9 ff 87 e4 01 00 00 0f

I hope this is usefull

Christian Fraenkel


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