Hi Andy, all,
Were there any known problems in the cx18 locking department regarding video
buffers or mailbox handling fixed sometime between 3.5.0 and today?
We are seeing some issues there (on a flavour of 3.5.0) and I just wanted to
quickly check here before diving in the code. I'll paste below some of the
problems we are seeing.
cx18-0: Skipped encoder PCM audio, MDL 223, 62 times - it must have dropped
out of rotation
cx18-0: Could not find MDL 358 for stream encoder PCM audio
cx18-0: Skipped encoder PCM audio, MDL 357, 62 times - it must have dropped
out of rotation
cx18-0: Could not find MDL 218 for stream encoder PCM audio
cx18-0: Skipped encoder PCM audio, MDL 217, 62 times - it must have dropped
out of rotation
------------[ cut here ]------------
WARNING: at lib/list_debug.c:59 __list_del_entry+0xa1/0xd0()
Hardware name:
list_del corruption. prev->next should be ffff8800371d1d40, but was
dead000000100100
Modules linked in: tun dummy ip6t_REJECT snd_dummy w83627ehf hwmon_vid
cx18_alsa mxl5005s s5h1409 tuner_simple tuner_types cs5345 tda9887 tda8290
tuner snd_hda_codec_realtek snd_hda_intel snd_hda_codec cx18 coretemp
snd_hwdep dvb_core cx2341x snd_seq videobuf_vmalloc videobuf_core
snd_seq_device ppdev tveeprom v4l2_common snd_pcm videodev parport_pc media
parport snd_timer snd soundcore lpc_ich i2c_i801 mfd_core r8169 snd_page_alloc
mii ftdi_sio serio_raw microcode i915 drm_kms_helper drm i2c_algo_bit i2c_core
video [last unloaded: nf_conntrack]
Pid: 5562, comm: player_movie Tainted: G W 3.5.0-93.fc16.x86_64 #1
Call Trace:
[<ffffffff8105927f>] warn_slowpath_common+0x7f/0xc0
[<ffffffff81059376>] warn_slowpath_fmt+0x46/0x50
[<ffffffff812e4f81>] __list_del_entry+0xa1/0xd0
[<ffffffff812e4fc1>] list_del+0x11/0x40
[<ffffffffa01cd4b6>] videobuf_queue_cancel+0x66/0x100 [videobuf_core]
[<ffffffffa01ce4ee>] videobuf_streamoff+0x2e/0x70 [videobuf_core]
[<ffffffffa0221672>] cx18_streamoff+0x52/0x70 [cx18]
[<ffffffffa01806e7>] __video_do_ioctl+0x2507/0x5350 [videodev]
[<ffffffff8109132f>] ? wakeup_preempt_entity+0x4f/0x60
[<ffffffff8108b1a4>] ? check_preempt_curr+0x84/0xa0
[<ffffffff8109132f>] ? wakeup_preempt_entity+0x4f/0x60
[<ffffffff8108b1fd>] ? ttwu_do_wakeup+0x3d/0x120
[<ffffffffa017dd70>] video_usercopy+0x120/0x570 [videodev]
[<ffffffffa017e1e0>] ? video_ioctl2+0x20/0x20 [videodev]
[<ffffffff8108e940>] ? wake_up_state+0x10/0x20
[<ffffffff810b11ab>] ? wake_futex+0x3b/0x60
[<ffffffff810b1d10>] ? futex_wake+0x100/0x120
[<ffffffffa017e1d5>] video_ioctl2+0x15/0x20 [videodev]
[<ffffffffa02221ce>] cx18_v4l2_ioctl+0x6e/0xa0 [cx18]
[<ffffffffa017c783>] v4l2_ioctl+0x113/0x1c0 [videodev]
[<ffffffff81092a1d>] ? set_next_entity+0x9d/0xb0
[<ffffffff81198a88>] do_vfs_ioctl+0x98/0x550
[<ffffffff8160f8d4>] ? __schedule+0x3c4/0x7c0
[<ffffffff810b3c7a>] ? sys_futex+0x10a/0x1a0
[<ffffffff81198fd1>] sys_ioctl+0x91/0xa0
[<ffffffff81619129>] system_call_fastpath+0x16/0x1b
---[ end trace 8e1185c5fb30e531 ]---
------------[ cut here ]------------
WARNING: at lib/list_debug.c:33 __list_add+0xc8/0xd0()
Hardware name:
list_add corruption. prev->next should be next (ffff88007af48c70), but was
(null). (prev=ffff880064dc6d40).
Modules linked in: tun dummy ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6
nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ip6table_filter
ip6_tables snd_dummy w83627ehf hwmon_vid cx18_alsa mxl5005s s5h1409
tuner_simple tuner_types cs5345 tda9887 tda8290 tuner snd_hda_codec_realtek
snd_hda_intel snd_hda_codec cx18 coretemp snd_hwdep dvb_core cx2341x snd_seq
videobuf_vmalloc videobuf_core snd_seq_device ppdev tveeprom v4l2_common
snd_pcm videodev parport_pc media parport snd_timer snd soundcore lpc_ich
i2c_i801 mfd_core r8169 snd_page_alloc mii ftdi_sio serio_raw microcode i915
drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
Pid: 5562, comm: player_movie Tainted: G W 3.5.0-93.fc16.x86_64 #1
Call Trace:
[<ffffffff8105927f>] warn_slowpath_common+0x7f/0xc0
[<ffffffff81059376>] warn_slowpath_fmt+0x46/0x50
[<ffffffff812e50b8>] __list_add+0xc8/0xd0
[<ffffffffa021c971>] buffer_queue+0x31/0x40 [cx18]
[<ffffffffa01ce456>] videobuf_streamon+0xb6/0x120 [videobuf_core]
[<ffffffffa0221722>] cx18_streamon+0x92/0xb0 [cx18]
[<ffffffffa018070c>] __video_do_ioctl+0x252c/0x5350 [videodev]
[<ffffffffa01d8658>] ? __videobuf_mmap_mapper+0x118/0xac0 [videobuf_vmalloc]
[<ffffffff812d471b>] ? prio_tree_insert+0x12b/0x230
[<ffffffffa017dd70>] video_usercopy+0x120/0x570 [videodev]
[<ffffffffa017e1e0>] ? video_ioctl2+0x20/0x20 [videodev]
[<ffffffffa017e1d5>] video_ioctl2+0x15/0x20 [videodev]
[<ffffffffa02221ce>] cx18_v4l2_ioctl+0x6e/0xa0 [cx18]
[<ffffffffa017c783>] v4l2_ioctl+0x113/0x1c0 [videodev]
[<ffffffff81198a88>] do_vfs_ioctl+0x98/0x550
[<ffffffff81198fd1>] sys_ioctl+0x91/0xa0
[<ffffffff81619129>] system_call_fastpath+0x16/0x1b
---[ end trace 8e1185c5fb30e529 ]---
Regards,
Tvrtko
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