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Subjectmplayer v4l hangs in 2.6.25.2/4
Hi,

I'm using mplayer for tv watch quite some kernels but 2.6.25 makes
mplayer unkillable. Last working kernel is 2.24.5 that I have tried.

This gets printed on the console

INFO: task mplayer:3465 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
mplayer D 0000000000000000 0 3465 3464
ffff810074333c68 0000000000200086 0000000000000000 00000000ffffffff
ffff81007a3889c0 ffff810074333c18 ffff810074333c98 ffffffff8064a800
ffffffff8064a800 ffffffff80646eb0 ffffffff8064a800 ffff8100757c1900
Call Trace:
[<ffffffff8049b26f>] __mutex_lock_slowpath+0x68/0xa0
[<ffffffff802274aa>] enqueue_task_fair+0x72/0x9b
[<ffffffff8049b0ee>] mutex_lock+0x1a/0x1e
[<ffffffff802265aa>] enqueue_task+0x13/0x1e
[<ffffffff880b51ab>] :videobuf_core:videobuf_mmap_setup+0x1c/0x45
[<ffffffff8813dbbe>] :bttv:vidiocgmbuf+0x2c/0x99
[<ffffffff8810b91d>] :videodev:__video_do_ioctl+0xa1/0x2ad9
[<ffffffff802272d5>] set_next_entity+0x18/0x36
[<ffffffff8049aa70>] thread_return+0x3a/0xa4
[<ffffffff8810e622>] :videodev:video_ioctl2+0x17c/0x210
[<ffffffff80238c7b>] ptrace_stop+0xfc/0x140
[<ffffffff8023a705>] ptrace_notify+0x83/0xa6
[<ffffffff80289221>] vfs_ioctl+0x55/0x6b
[<ffffffff8028948a>] do_vfs_ioctl+0x253/0x264
[<ffffffff802894ec>] sys_ioctl+0x51/0x71
[<ffffffff8020bef8>] int_very_careful+0x35/0x3e
[<ffffffff8020be79>] tracesys+0xdc/0xe1
I've attached what might be usable wrt to this.

Please fix :-)

Best regards,

Koos Vriezen
[unhandled content-type:application/x-gzip][unhandled content-type:application/x-gzip][unhandled content-type:application/x-gzip][unhandled content-type:application/x-gzip][unhandled content-type:application/x-gzip]
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