From: Knut Petersen <Knut_Petersen@t-online.de>
To: linux-kernel@vger.kernel.org
Cc: intel-gfx <intel-gfx@lists.freedesktop.org>
Subject: [BUG 3.9.4] pipe_off wait timed out
Date: Sun, 02 Jun 2013 09:46:49 +0200 [thread overview]
Message-ID: <51AAF869.8050906@t-online.de> (raw)
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During booting kernel 3.9.4 on an AOpen i915GMm-hfs, Pentium-M Dothan 2GHz, 2GB RAM
system the "pipe_off wait timed out" warning was triggered. Reproducibility: low, problem was
found only once.
cu,
Knut
[-- Attachment #2: dmesg --]
[-- Type: text/plain, Size: 6688 bytes --]
[ 16.276006] =============================================
[ 16.276006] [ INFO: possible recursive locking detected ]
[ 16.276006] 3.9.4-main #26 Not tainted
[ 16.276006] ---------------------------------------------
[ 16.276006] systemd-udevd/259 is trying to acquire lock:
[ 16.276006] (hdl->lock){+.+...}, at: [<f851437e>] find_ref_lock+0x1c/0x39 [videodev]
[ 16.276006]
[ 16.276006] but task is already holding lock:
[ 16.276006] (hdl->lock){+.+...}, at: [<f8514fe0>] v4l2_ctrl_add_handler+0x36/0xa3 [videodev]
[ 16.276006]
[ 16.276006] other info that might help us debug this:
[ 16.276006] Possible unsafe locking scenario:
[ 16.276006]
[ 16.276006] CPU0
[ 16.276006] ----
[ 16.276006] lock(hdl->lock);
[ 16.276006] lock(hdl->lock);
[ 16.276006]
[ 16.276006] *** DEADLOCK ***
[ 16.276006]
[ 16.276006] May be due to missing lock nesting notation
[ 16.276006]
[ 16.276006] 3 locks held by systemd-udevd/259:
[ 16.276006] #0: (&__lockdep_no_validate__){......}, at: [<c03dbfdb>] __driver_attach+0x35/0x6f
[ 16.276006] #1: (&__lockdep_no_validate__){......}, at: [<c03dbfe7>] __driver_attach+0x41/0x6f
[ 16.276006] #2: (hdl->lock){+.+...}, at: [<f8514fe0>] v4l2_ctrl_add_handler+0x36/0xa3 [videodev]
[ 16.276006]
[ 16.276006] stack backtrace:
[ 16.276006] Pid: 259, comm: systemd-udevd Not tainted 3.9.4-main #26
[ 16.276006] Call Trace:
[ 16.276006] [<c0127bb9>] ? vprintk_emit+0x392/0x3da
[ 16.276006] [<c015a9fc>] __lock_acquire+0xcaa/0x1407
[ 16.276006] [<c015bb35>] ? mark_held_locks+0x9e/0xc1
[ 16.276006] [<c015b57b>] lock_acquire+0x9b/0xd5
[ 16.276006] [<f851437e>] ? find_ref_lock+0x1c/0x39 [videodev]
[ 16.276006] [<f851437e>] ? find_ref_lock+0x1c/0x39 [videodev]
[ 16.276006] [<c050e5d3>] mutex_lock_nested+0x3a/0x255
[ 16.276006] [<f851437e>] ? find_ref_lock+0x1c/0x39 [videodev]
[ 16.276006] [<c050e7ac>] ? mutex_lock_nested+0x213/0x255
[ 16.276006] [<c050e7d3>] ? mutex_lock_nested+0x23a/0x255
[ 16.276006] [<f851437e>] find_ref_lock+0x1c/0x39 [videodev]
[ 16.276006] [<f8514968>] handler_new_ref+0x37/0x148 [videodev]
[ 16.276006] [<f851500c>] v4l2_ctrl_add_handler+0x62/0xa3 [videodev]
[ 16.276006] [<f853d988>] cx8800_initdev+0x30f/0x66d [cx8800]
[ 16.276006] [<c0513288>] ? sub_preempt_count+0x84/0xa1
[ 16.276006] [<c0510734>] ? _raw_spin_unlock_irqrestore+0x44/0x5b
[ 16.276006] [<c03e10b9>] ? __pm_runtime_resume+0x40/0x48
[ 16.276006] [<c02f14a3>] pci_device_probe+0x5e/0x96
[ 16.276006] [<c03dbeb2>] driver_probe_device+0x83/0x177
[ 16.276006] [<c03dbff9>] __driver_attach+0x53/0x6f
[ 16.276006] [<c03daa16>] bus_for_each_dev+0x43/0x6d
[ 16.276006] [<c03dbafe>] driver_attach+0x19/0x1b
[ 16.276006] [<c03dbfa6>] ? driver_probe_device+0x177/0x177
[ 16.276006] [<c03db798>] bus_add_driver+0xc3/0x1c0
[ 16.276006] [<f8545000>] ? 0xf8544fff
[ 16.276006] [<f8545000>] ? 0xf8544fff
[ 16.276006] [<c03dc350>] driver_register+0x79/0xf1
[ 16.276006] [<c02e5578>] ? __raw_spin_lock_init+0x26/0x49
[ 16.276006] [<f8545000>] ? 0xf8544fff
[ 16.276006] [<c02f1586>] __pci_register_driver+0x4a/0x4d
[ 16.276006] [<f8545026>] cx8800_init+0x26/0x1000 [cx8800]
[ 16.276006] [<c010108d>] do_one_initcall+0x6f/0x10e
[ 16.276006] [<f8545000>] ? 0xf8544fff
[ 16.276006] [<c0163909>] load_module+0x164f/0x1931
[ 16.276006] [<c0163c5b>] sys_init_module+0x70/0x85
[ 16.276006] [<c0510b3d>] syscall_call+0x7/0xb
[ 16.498868] ------------[ cut here ]------------
[ 16.501906] WARNING: at drivers/gpu/drm/i915/intel_display.c:984 intel_wait_for_pipe_off+0x149/0x154()
[ 16.509753] Hardware name:
[ 16.518599] pipe_off wait timed out
[ 16.521005] cx88[0]/0: registered device video0 [v4l2]
[ 16.523303] Modules linked in: videobuf_dvb dvb_core ir_lirc_codec lirc_dev ir_rc5_decoder rc_hauppauge snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_pcm_oss snd_pcm snd_seq tuner snd_timer snd_seq_device snd_mixer_oss cx8802(+) cx8800(+) cx88xx snd v4l2_common videodev rc_core tveeprom videobuf_dma_sg videobuf_core btcx_risc soundcore snd_page_alloc
[ 16.530840] Pid: 379, comm: plymouthd Not tainted 3.9.4-main #26
[ 16.537675] Call Trace:
[ 16.542841] [<c0125b89>] warn_slowpath_common+0x68/0x7f
[ 16.546954] [<c03aa42e>] ? intel_wait_for_pipe_off+0x149/0x154
[ 16.550899] [<c0125c13>] warn_slowpath_fmt+0x2b/0x2f
[ 16.554127] cx88[0]/0: registered device vbi0
[ 16.556917] [<c03aa42e>] intel_wait_for_pipe_off+0x149/0x154
[ 16.559594] [<c03c73b5>] intel_tv_mode_set+0x4c4/0x620
[ 16.566720] [<c03ac37f>] __intel_set_mode+0x595/0x6b1
[ 16.572037] [<c015bb35>] ? mark_held_locks+0x9e/0xc1
[ 16.574734] [<c03b11cf>] intel_set_mode+0x17/0x2f
[ 16.580456] [<c03b1ef7>] intel_get_load_detect_pipe+0x2b4/0x308
[ 16.586534] [<c050e8c8>] ? __mutex_unlock_slowpath+0xda/0xf4
[ 16.591214] [<c015bc5f>] ? trace_hardirqs_on_caller+0x107/0x156
[ 16.594205] [<c015bcb9>] ? trace_hardirqs_on+0xb/0xd
[ 16.598037] [<c03c7752>] intel_tv_detect+0xd1/0x3ea
[ 16.601102] [<c0376cdd>] drm_helper_probe_single_connector_modes+0xa0/0x263
[ 16.603877] [<c0385472>] drm_mode_getconnector+0xc2/0x2a8
[ 16.608327] [<c01b0eb0>] ? might_fault+0x2e/0x6c
[ 16.611095] [<c03853b0>] ? drm_mode_getcrtc+0xac/0xac
[ 16.614837] [<c037a927>] drm_ioctl+0x27c/0x32b
[ 16.618451] [<c03853b0>] ? drm_mode_getcrtc+0xac/0xac
[ 16.621830] cx88/2: cx2388x dvb driver version 0.0.9 loaded
[ 16.625248] [<c04c64a7>] ? tcp_urg+0xa0/0x17b
[ 16.627977] cx88/2: registering cx8802 driver, type: dvb access: shared
[ 16.632029] cx88[0]/2: subsystem: 0070:6906, board: Hauppauge WinTV-HVR4000(Lite) DVB-S/S2 [card=69]
[ 16.634894] cx88[0]/2: cx2388x based DVB/ATSC card
[ 16.639982] [<c037a6ab>] ? drm_copy_field+0x54/0x54
[ 16.643313] [<c01d3014>] vfs_ioctl+0x20/0x2a
[ 16.646196] cx8802_alloc_frontends() allocating 1 frontend(s)
[ 16.649368] [<c01d3a64>] do_vfs_ioctl+0x42d/0x46b
[ 16.656996] [<c051307a>] ? __do_page_fault+0x3fb/0x480
[ 16.662587] [<c0179482>] ? rcu_irq_exit+0x73/0x81
[ 16.666473] [<c02e0804>] ? trace_hardirqs_on_thunk+0xc/0x10
[ 16.671748] [<c01d3ae3>] sys_ioctl+0x41/0x62
[ 16.675890] DVB: registering new adapter (cx88[0])
[ 16.679319] [<c04c64a7>] ? tcp_urg+0xa0/0x17b
[ 16.682249] cx88-mpeg driver manager 0000:05:05.2: DVB: registering adapter 0 frontend 0 (Conexant CX24116/CX24118)...
[ 16.690170] [<c0510b3d>] syscall_call+0x7/0xb
[ 16.693783] [<c04c64a7>] ? tcp_urg+0xa0/0x17b
[ 16.696926] [<c04c64a7>] ? tcp_urg+0xa0/0x17b
[ 16.700903] ---[ end trace d6a6a8489005d7da ]---
reply other threads:[~2013-06-02 7:46 UTC|newest]
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