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Issue 843790 link

Starred by 2 users
Status: Untriaged
Owner: ----
Cc:
tovep@chromium.org
mcasas@chromium.org
█ marc...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Teemo-66: Kernel warning after unmute and mute mic/camera on Teemo

Project Member Reported by mzhuo@chromium.org, May 16 2018 
ChromeOS Version: R66-10452.96.0

What steps will reproduce the problem?
(1)mute/unmute mic
(2)mute/unmute camera


What is the expected result?
No kernel warning

What happens instead?
Kernel waring

log
=================

74457283  Teemo-66: Kernel warning after unmute and mute mic/camera on Teemo 
hangouts_screened x
hotrod-platform-triaged x
Teemo-66 x
Communications Work Hotrod Platform
Profile portrait of Min Zhuo
Min Zhuo  <mzhuo@google.com>  #1 Mar 9, 2018 05:07PM 
Reported Issue
Kernel crash after unmute.mute mic on Teemo

Setup
---------
Teemo running GOOGLE_RELEASE=10450.0.2018_03_07_1431, in Thor meet mode. 

Steps
---------
1. join meeing
2. unmute/mute mic
3 found kernel crash

log
-----
2018-03-09T16:31:28.292095-08:00 WARNING kernel: [ 1804.913547] ------------[ cut here ]------------
2018-03-09T16:31:28.292111-08:00 WARNING kernel: [ 1804.913558] WARNING: CPU: 5 PID: 17642 at /mnt/host/source/src/third_party/kernel/v4.4/drivers/gpu/drm/i915/intel_display.c:12878 intel_atomic_commit_tail+0x993/0x2358
2018-03-09T16:31:28.292113-08:00 WARNING kernel: [ 1804.913561] pipe A vblank wait timed out
2018-03-09T16:31:28.292114-08:00 WARNING kernel: [ 1804.913562] Modules linked in: cmac rfcomm evdi uinput ip6table_filter uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core snd_soc_kbl_rt5663_max98927 snd_soc_dmic snd_soc_hdac_hdmi snd_soc_skl_ssp_clk snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_sst_match snd_hda_ext_core snd_hda_core zram snd_soc_rt5663 snd_soc_rl6231 acpi_als kfifo_buf industrialio bridge stp llc ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_mark fuse snd_seq_dummy snd_seq joydev btusb btrtl btbcm btintel snd_usb_audio snd_usbmidi_lib bluetooth snd_hwdep snd_rawmidi snd_seq_device iwlmvm iwl7000_mac80211 r8169 mii iwlwifi cfg80211
2018-03-09T16:31:28.292115-08:00 WARNING kernel: [ 1804.913623] CPU: 5 PID: 17642 Comm: kworker/u16:1 Tainted: G     U          4.4.107 #1
2018-03-09T16:31:28.292116-08:00 WARNING kernel: [ 1804.913626] Hardware name: Google Fizz/Fizz, BIOS Google_Fizz.10139.94.0 02/19/2018
2018-03-09T16:31:28.292117-08:00 WARNING kernel: [ 1804.913629] Workqueue: events_unbound intel_atomic_commit_work
2018-03-09T16:31:28.292122-08:00 WARNING kernel: [ 1804.913632]  0000000000000286 b52573bb4614e870 ffff880129f57ca0 ffffffff9f0f452c
2018-03-09T16:31:28.292123-08:00 WARNING kernel: [ 1804.913637]  ffff880129f57cf0 0000000000000000 ffff880129f57ce0 ffffffff9ee6cb94
2018-03-09T16:31:28.292123-08:00 WARNING kernel: [ 1804.913641]  0000324e29f57d60 0000000000000000 0000000000000000 0000000000000001
2018-03-09T16:31:28.292124-08:00 WARNING kernel: [ 1804.913646] Call Trace:
2018-03-09T16:31:28.292125-08:00 WARNING kernel: [ 1804.913652]  [<ffffffff9f0f452c>] dump_stack+0x4d/0x63
2018-03-09T16:31:28.292126-08:00 WARNING kernel: [ 1804.913656]  [<ffffffff9ee6cb94>] __warn+0xca/0xe5
2018-03-09T16:31:28.292127-08:00 WARNING kernel: [ 1804.913659]  [<ffffffff9ee6cc97>] warn_slowpath_fmt+0x5a/0x76
2018-03-09T16:31:28.292128-08:00 WARNING kernel: [ 1804.913662]  [<ffffffff9f252f26>] intel_atomic_commit_tail+0x993/0x2358
2018-03-09T16:31:28.292129-08:00 WARNING kernel: [ 1804.913665]  [<ffffffff9ef1cd7e>] ? put_prev_task_fair+0xa79/0xa79
2018-03-09T16:31:28.292129-08:00 WARNING kernel: [ 1804.913669]  [<ffffffff9ef28ba3>] ? __wake_up_sync_key+0x5b/0x5b
2018-03-09T16:31:28.292130-08:00 WARNING kernel: [ 1804.913671]  [<ffffffff9f2548fd>] intel_atomic_commit_work+0x12/0x14
2018-03-09T16:31:28.292131-08:00 WARNING kernel: [ 1804.913676]  [<ffffffff9ef15161>] worker_thread+0x5d2/0x7ed
2018-03-09T16:31:28.292132-08:00 WARNING kernel: [ 1804.913679]  [<ffffffff9ef14b8f>] ? worker_enter_idle+0x126/0x126
2018-03-09T16:31:28.292133-08:00 WARNING kernel: [ 1804.913682]  [<ffffffff9ee866b0>] kthread+0x12f/0x137
2018-03-09T16:31:28.292134-08:00 WARNING kernel: [ 1804.913685]  [<ffffffff9ee86581>] ? kthread_stop+0x12d/0x12d
2018-03-09T16:31:28.292135-08:00 WARNING kernel: [ 1804.913689]  [<ffffffff9f5badef>] ret_from_fork+0x3f/0x70
2018-03-09T16:31:28.292135-08:00 WARNING kernel: [ 1804.913691]  [<ffffffff9ee86581>] ? kthread_stop+0x12d/0x12d
2018-03-09T16:31:28.292136-08:00 WARNING kernel: [ 1804.913694] ---[ end trace 19b62eef6021cd53 ]---
2018-03-09T16:31:28.298293-08:00 INFO crash_reporter[26637]: libminijail[26637]: mount /dev/log -> /dev/log type ''
2018-03-09T16:31:28.301682-08:00 ERR cras_server[3620]: pcm_avail returned frames larger than buf_size: Hangouts Meet speakermic: USB Audio:0,0: 262192 > 262144 for 2 times
2018-03-09T16:31:28.318260-08:00 INFO crash_reporter[26637]: Processing kernel warning: always collect from developer builds

rw-r--r--.  1 root    root    1516022 Mar  9 16:33 debug-logs_20180309-163301.tgz
drwxr-xr-x. 15 chronos chronos    4096 Mar  9 16:58 chronos
localhost /home # cat /etc/lsb-release                                                                                                                       
CHROMEOS_RELEASE_APPID={0C1E39B7-DAE6-4972-8004-E96F60D9342C}
CHROMEOS_BOARD_APPID={0C1E39B7-DAE6-4972-8004-E96F60D9342C}
CHROMEOS_CANARY_APPID={90F229CE-83E2-4FAF-8479-E368A34938B1}
DEVICETYPE=CHROMEBOX
CHROMEOS_ARC_VERSION=4628461
CHROMEOS_ARC_ANDROID_SDK_VERSION=25
GOOGLE_RELEASE=10450.0.2018_03_07_1431
CHROMEOS_DEVSERVER=http://zzhu2.mtv.corp.google.com:8080
CHROMEOS_RELEASE_BOARD=fizz
CHROMEOS_RELEASE_BUILD_NUMBER=10450
CHROMEOS_RELEASE_BRANCH_NUMBER=0
CHROMEOS_RELEASE_CHROME_MILESTONE=66
CHROMEOS_RELEASE_PATCH_NUMBER=2018_03_07_1431
CHROMEOS_RELEASE_TRACK=testimage-channel
CHROMEOS_RELEASE_DESCRIPTION=10450.0.2018_03_07_1431 (Test Build - frankhu) developer-build fizz-unibuild (fizz kench sion teemo wukong)
CHROMEOS_RELEASE_BUILD_TYPE=Test Build - frankhu
CHROMEOS_RELEASE_NAME=Chromium OS
CHROMEOS_RELEASE_UNIBUILD=1
CHROMEOS_RELEASE_VERSION=10450.0.2018_03_07_1431
CHROMEOS_AUSERVER=http://zzhu2.mtv.corp.google.com:8080/update
CHROMEOS_RELEASE_MODELS=fizz kench sion teemo wukong
localhost /home # ls -altr /var/spool/crash                                                                                                                  
total 40
drwxr-xr-x. 5 root root  4096 Mar  9 13:43 ..
-rw-r--r--. 1 root root  7569 Mar  9 16:02 service_failure.20180309.160234.0.log
-rw-r--r--. 1 root root   168 Mar  9 16:02 service_failure.20180309.160234.0.meta
-rw-r--r--. 1 root root  3410 Mar  9 16:31 kernel_warning.20180309.163128.0.kcrash
-rw-r--r--. 1 root root  2865 Mar  9 16:31 kernel_warning.20180309.163128.0.log.gz
-rw-r--r--. 1 root root   267 Mar  9 16:31 kernel_warning.20180309.163128.0.meta
drwxr-xr-t. 2 root root 12288 Mar  9 16:31 .
localhost /home #
test_that.INFO
285 KB Download
Profile portrait of Min Zhuo
Min Zhuo  <mzhuo@google.com> Mar 9, 2018 05:09PM
kernel_warning.20180309.163128.0.meta
267 B Download
kernel_warning.20180309.163128.0.log.gz
2.8 KB Download
kernel_warning.20180309.163128.0.kcrash
3.3 KB Download
debug-logs_20180309-163301.tgz
1.4 MB Download
Profile portrait of Min Zhuo
Min Zhuo  <mzhuo@google.com>  #2 Mar 12, 2018 11:25AM 
Another instance of kernel crash:
============================
2018-03-09T20:29:41.436097-08:00 WARNING kernel: [  312.499893] ------------[ cut here ]------------
2018-03-09T20:29:41.436108-08:00 WARNING kernel: [  312.499906] WARNING: CPU: 7 PID: 118 at /mnt/host/source/src/third_party/kernel/v4.4/drivers/gpu/drm/i915/intel_display.c:12878 intel_atomic_commit_tail+0x993/0x2358
2018-03-09T20:29:41.436109-08:00 WARNING kernel: [  312.499908] pipe A vblank wait timed out
2018-03-09T20:29:41.436110-08:00 WARNING kernel: [  312.499912] Modules linked in: cmac rfcomm evdi uinput ip6table_filter snd_soc_kbl_rt5663_max98927 snd_soc_dmic snd_soc_hdac_hdmi snd_soc_skl_ssp_clk snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_sst_match snd_hda_ext_core snd_hda_core zram acpi_als snd_soc_rt5663 kfifo_buf industrialio snd_soc_rl6231 bridge stp llc ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_mark fuse snd_seq_dummy snd_seq uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core joydev btusb btrtl btbcm btintel bluetooth snd_usb_audio snd_usbmidi_lib snd_hwdep snd_rawmidi snd_seq_device iwlmvm iwl7000_mac80211 r8169 mii iwlwifi cfg80211
2018-03-09T20:29:41.436111-08:00 WARNING kernel: [  312.499992] CPU: 7 PID: 118 Comm: kworker/u16:2 Tainted: G     U          4.4.107 #1
2018-03-09T20:29:41.436112-08:00 WARNING kernel: [  312.499995] Hardware name: Google Fizz/Fizz, BIOS Google_Fizz.10139.94.0 02/19/2018
2018-03-09T20:29:41.436112-08:00 WARNING kernel: [  312.500000] Workqueue: events_unbound intel_atomic_commit_work
2018-03-09T20:29:41.436113-08:00 WARNING kernel: [  312.500004]  0000000000000286 de5c3299624ebbd6 ffff88007647bca0 ffffffff8caf452c
2018-03-09T20:29:41.436114-08:00 WARNING kernel: [  312.500010]  ffff88007647bcf0 0000000000000000 ffff88007647bce0 ffffffff8c86cb94
2018-03-09T20:29:41.436114-08:00 WARNING kernel: [  312.500016]  0000324e7647bd60 0000000000000000 0000000000000000 0000000000000001
2018-03-09T20:29:41.436115-08:00 WARNING kernel: [  312.500022] Call Trace:
2018-03-09T20:29:41.436116-08:00 WARNING kernel: [  312.500029]  [<ffffffff8caf452c>] dump_stack+0x4d/0x63
2018-03-09T20:29:41.436117-08:00 WARNING kernel: [  312.500035]  [<ffffffff8c86cb94>] __warn+0xca/0xe5
2018-03-09T20:29:41.436117-08:00 WARNING kernel: [  312.500039]  [<ffffffff8c86cc97>] warn_slowpath_fmt+0x5a/0x76
2018-03-09T20:29:41.436118-08:00 WARNING kernel: [  312.500043]  [<ffffffff8cc52f26>] intel_atomic_commit_tail+0x993/0x2358
2018-03-09T20:29:41.436119-08:00 WARNING kernel: [  312.500049]  [<ffffffff8c91cd7e>] ? put_prev_task_fair+0xa79/0xa79
2018-03-09T20:29:41.436119-08:00 WARNING kernel: [  312.500053]  [<ffffffff8c928ba3>] ? __wake_up_sync_key+0x5b/0x5b
2018-03-09T20:29:41.436120-08:00 WARNING kernel: [  312.500057]  [<ffffffff8cc548fd>] intel_atomic_commit_work+0x12/0x14
2018-03-09T20:29:41.436120-08:00 WARNING kernel: [  312.500060]  [<ffffffff8c915161>] worker_thread+0x5d2/0x7ed
2018-03-09T20:29:41.436125-08:00 WARNING kernel: [  312.500064]  [<ffffffff8c914b8f>] ? worker_enter_idle+0x126/0x126
2018-03-09T20:29:41.436126-08:00 WARNING kernel: [  312.500068]  [<ffffffff8c8866b0>] kthread+0x12f/0x137
2018-03-09T20:29:41.436127-08:00 WARNING kernel: [  312.500072]  [<ffffffff8c886581>] ? kthread_stop+0x12d/0x12d
2018-03-09T20:29:41.436127-08:00 WARNING kernel: [  312.500077]  [<ffffffff8cfbadef>] ret_from_fork+0x3f/0x70
2018-03-09T20:29:41.436128-08:00 WARNING kernel: [  312.500080]  [<ffffffff8c886581>] ? kthread_stop+0x12d/0x12d
2018-03-09T20:29:41.436129-08:00 WARNING kernel: [  312.500083] ---[ end trace 956aad92c573de82 ]---
2018-03-09T20:29:41.442539-08:00 INFO crash_reporter[7795]: libminijail[7795]: mount /dev/log -> /dev/log type ''
2018-03-09T20:29:41.459690-08:00 INFO crash_reporter[7795]: Processing kernel warning: always collect from developer builds
2018-03-09T20:29:41.467117-08:00 INFO crash_reporter[7795]: Stored kernel warning into /var/spool/crash/kernel_warning.20180309.202941.0.kcrash
2018-03-09T20:29:44.574763-08:00 INFO periodic_scheduler[7807]: crash_sender: running /sbin/crash_sender
2018-03-09T20:29:44.599836-08:00 NOTICE crash_sender[7827]: Exiting early due to test image.
2018-03-09T20:29:44.609659-08:00 INFO minijail0[7809]: libminijail[7809]: child process 7814 exited with status 1
localhost ~ # cat /etc/lsb-release                                                                                                                                                                                
CHROMEOS_RELEASE_APPID={0C1E39B7-DAE6-4972-8004-E96F60D9342C}
CHROMEOS_BOARD_APPID={0C1E39B7-DAE6-4972-8004-E96F60D9342C}
CHROMEOS_CANARY_APPID={90F229CE-83E2-4FAF-8479-E368A34938B1}
DEVICETYPE=CHROMEBOX
CHROMEOS_ARC_VERSION=4628461
CHROMEOS_ARC_ANDROID_SDK_VERSION=25
GOOGLE_RELEASE=10450.0.2018_03_07_1431
CHROMEOS_DEVSERVER=http://zzhu2.mtv.corp.google.com:8080
CHROMEOS_RELEASE_BOARD=fizz
CHROMEOS_RELEASE_BUILD_NUMBER=10450
CHROMEOS_RELEASE_BRANCH_NUMBER=0
CHROMEOS_RELEASE_CHROME_MILESTONE=66
CHROMEOS_RELEASE_PATCH_NUMBER=2018_03_07_1431
CHROMEOS_RELEASE_TRACK=testimage-channel
CHROMEOS_RELEASE_DESCRIPTION=10450.0.2018_03_07_1431 (Test Build - frankhu) developer-build fizz-unibuild (fizz kench sion teemo wukong)
CHROMEOS_RELEASE_BUILD_TYPE=Test Build - frankhu
CHROMEOS_RELEASE_NAME=Chromium OS
CHROMEOS_RELEASE_UNIBUILD=1
CHROMEOS_RELEASE_VERSION=10450.0.2018_03_07_1431
CHROMEOS_AUSERVER=http://zzhu2.mtv.corp.google.com:8080/update
CHROMEOS_RELEASE_MODELS=fizz kench sion teemo wukong
debug-logs_20180312-111952.tgz
90 MB Download
kernel_warning.20180309.202941.0.meta
267 B Download
kernel_warning.20180309.202941.0.log.gz
3 KB Download
kernel_warning.20180309.202941.0.kcrash
3.3 KB Download
Profile portrait of 
tovep@google.com  <tovep@google.com>  #3 Mar 13, 2018 03:13AM 
Assigned to mzhuo@google.com
Please refile as a crbug and put it in the os>kernel>display component.
Profile portrait of Min Zhuo
Min Zhuo  <mzhuo@google.com>  #4 May 16, 2018 02:49PM 
Reproduced with CHROMEOS_RELEASE_BUILDER_PATH=trybot-fizz-release-tryjob/R66-10452.96.0-b0 which Zhongze build based on 66-TOT.
======================================================================================

2018-05-16T16:33:54.152197-05:00 ERR kernel: [ 2673.778530] pcieport 0000:00:1c.3:    [ 0] Receiver Error
2018-05-16T16:33:56.790140-05:00 WARNING kernel: [ 2676.416707] ------------[ cut here ]------------
2018-05-16T16:33:56.790149-05:00 WARNING kernel: [ 2676.416719] WARNING: CPU: 2 PID: 167 at ../../../../../tmp/portage/sys-kernel/chromeos-kernel-4_4-4.4.118-r1422/work/chromeos-kernel-4_4-4.4.118/drivers/gpu/drm/i915/intel_display.c:12900 intel_atomic_commit_tail+0x9fa/0x2454
2018-05-16T16:33:56.790150-05:00 WARNING kernel: [ 2676.416721] pipe A vblank wait timed out
2018-05-16T16:33:56.790151-05:00 WARNING kernel: [ 2676.416723] Modules linked in: cmac rfcomm evdi uinput snd_soc_kbl_rt5663_max98927 ip6t_REJECT nf_reject_ipv6 snd_soc_hdac_hdmi snd_soc_skl_ssp_clk snd_soc_dmic snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_sst_match snd_hda_ext_core snd_hda_core snd_soc_rt5663 acpi_als kfifo_buf industrialio snd_soc_rl6231 zram bridge stp llc ipt_MASQUERADE nf_nat_masquerade_ipv4 fuse xt_mark snd_seq_dummy snd_seq joydev btusb btrtl btbcm btintel bluetooth uvcvideo videobuf2_vmalloc videobuf2_memops snd_usb_audio videobuf2_v4l2 videobuf2_core snd_usbmidi_lib snd_hwdep snd_rawmidi snd_seq_device ip6table_filter iwlmvm iwl7000_mac80211 r8169 mii iwlwifi iwl7000_cfg80211
2018-05-16T16:33:56.790151-05:00 WARNING kernel: [ 2676.416796] CPU: 2 PID: 167 Comm: kworker/u16:8 Tainted: G     U          4.4.118-13214-gb4494795b464 #1
2018-05-16T16:33:56.790152-05:00 WARNING kernel: [ 2676.416799] Hardware name: Google Fizz/Fizz, BIOS Google_Fizz.10139.113.0 03/30/2018
2018-05-16T16:33:56.790153-05:00 WARNING kernel: [ 2676.416804] Workqueue: events_unbound intel_atomic_commit_work
2018-05-16T16:33:56.790153-05:00 WARNING kernel: [ 2676.416808]  0000000000000286 a0ee1413f94ce54a ffff88007553fca0 ffffffff9bd06852
2018-05-16T16:33:56.790154-05:00 WARNING kernel: [ 2676.416813]  ffff88007553fcf0 0000000000000000 ffff88007553fce0 ffffffff9ba6d0e3
2018-05-16T16:33:56.790409-05:00 WARNING kernel: [ 2676.416818]  000032647553fd60 0000000000000000 0000000000000000 0000000000000001
2018-05-16T16:33:56.790422-05:00 WARNING kernel: [ 2676.416824] Call Trace:
2018-05-16T16:33:56.790425-05:00 WARNING kernel: [ 2676.416830]  [<ffffffff9bd06852>] dump_stack+0x4d/0x63
2018-05-16T16:33:56.790426-05:00 WARNING kernel: [ 2676.416834]  [<ffffffff9ba6d0e3>] __warn+0xca/0xe5
2018-05-16T16:33:56.790427-05:00 WARNING kernel: [ 2676.416838]  [<ffffffff9ba6d1e6>] warn_slowpath_fmt+0x5a/0x76
2018-05-16T16:33:56.790428-05:00 WARNING kernel: [ 2676.416842]  [<ffffffff9c06308c>] intel_atomic_commit_tail+0x9fa/0x2454
2018-05-16T16:33:56.790429-05:00 WARNING kernel: [ 2676.416846]  [<ffffffff9c1d2288>] ? __schedule+0x52f/0xa05
2018-05-16T16:33:56.790429-05:00 WARNING kernel: [ 2676.416849]  [<ffffffff9c1d227c>] ? __schedule+0x523/0xa05
2018-05-16T16:33:56.790430-05:00 WARNING kernel: [ 2676.416851]  [<ffffffff9c1d2288>] ? __schedule+0x52f/0xa05
2018-05-16T16:33:56.790431-05:00 WARNING kernel: [ 2676.416854]  [<ffffffff9c1d227c>] ? __schedule+0x523/0xa05
2018-05-16T16:33:56.790432-05:00 WARNING kernel: [ 2676.416858]  [<ffffffff9bb2b5eb>] ? __wake_up_sync_key+0x5b/0x5b
2018-05-16T16:33:56.790432-05:00 WARNING kernel: [ 2676.416862]  [<ffffffff9be6311e>] intel_atomic_commit_work+0x12/0x14
2018-05-16T16:33:56.790433-05:00 WARNING kernel: [ 2676.416865]  [<ffffffff9bb16d5a>] worker_thread+0x5d2/0x7ed
2018-05-16T16:33:56.790434-05:00 WARNING kernel: [ 2676.416869]  [<ffffffff9bb16788>] ? worker_enter_idle+0x126/0x126
2018-05-16T16:33:56.790434-05:00 WARNING kernel: [ 2676.416872]  [<ffffffff9ba87c76>] kthread+0x12f/0x137
2018-05-16T16:33:56.790435-05:00 WARNING kernel: [ 2676.416875]  [<ffffffff9c1d2288>] ? __schedule+0x52f/0xa05
2018-05-16T16:33:56.790436-05:00 WARNING kernel: [ 2676.416878]  [<ffffffff9ba87b47>] ? kthread_stop+0x12d/0x12d
2018-05-16T16:33:56.790436-05:00 WARNING kernel: [ 2676.416882]  [<ffffffff9c1d72d5>] ret_from_fork+0x55/0x80
2018-05-16T16:33:56.790437-05:00 WARNING kernel: [ 2676.416885]  [<ffffffff9ba87b47>] ? kthread_stop+0x12d/0x12d
2018-05-16T16:33:56.790437-05:00 WARNING kernel: [ 2676.416887] ---[ end trace 67af0bd2609ca5db ]---

pls check https://b.corp.google.com/issues/74457283 for debug file.

Comment 1 by mzhuo@chromium.org, May 16 2018

Cc: tovep@chromium.org

Comment 2 by mzhuo@chromium.org, May 16 2018

Components: OS>Kernel

Comment 3 by mzhuo@chromium.org, May 16 2018

Components: -OS>Kernel OS>Kernel>Display

Comment 4 by pbasavarajappa@chromium.org, May 16 2018

Labels: M-67
Hit the issue on official image of 67

Chrome OS - 10575.40.0, 67.0.3396.49 
Hotrodapp - 1.3.165.0

Camera -PTZ Pro
Device- teemo

Steps:

1. Join the meeting
2. Unplug and hot plug the camera during the meeting

Expected:
No App or kernel crash

Instead:
Kernel crash reported under /var/spool/crash

localhost ~ # 2018-05-16T15:04:59.336341-07:00 INFO kernel: [ 3254.465049] usb 1-4: USB disconnect, device number 9
2018-05-16T15:05:04.988315-07:00 INFO kernel: [ 3260.116425] usb 1-4: new high-speed USB device number 10 using xhci_hcd
2018-05-16T15:05:07.355282-07:00 INFO kernel: [ 3262.483684] usb 1-4: New USB device found, idVendor=046d, idProduct=0853, bcdDevice= 0.13
2018-05-16T15:05:07.355294-07:00 INFO kernel: [ 3262.483690] usb 1-4: New USB device strings: Mfr=0, Product=2, SerialNumber=0
2018-05-16T15:05:07.355295-07:00 INFO kernel: [ 3262.483693] usb 1-4: Product: PTZ Pro Camera
2018-05-16T15:05:07.356265-07:00 INFO kernel: [ 3262.484556] uvcvideo: Found UVC 1.00 device PTZ Pro Camera (046d:0853)
2018-05-16T15:05:07.358300-07:00 INFO kernel: [ 3262.486455] input: PTZ Pro Camera as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4:1.2/0003:046D:0853.0007/input/input10
2018-05-16T15:05:07.409283-07:00 INFO kernel: [ 3262.537902] hid-generic 0003:046D:0853.0007: input,hiddev0,hidraw3: USB HID v1.11 Device [PTZ Pro Camera] on usb-0000:00:14.0-4/input2
2018-05-16T15:05:36.346318-07:00 INFO kernel: [ 3291.475850] usb 1-4: USB disconnect, device number 10
2018-05-16T15:05:36.349361-07:00 WARNING kernel: [ 3291.478661] ------------[ cut here ]------------
2018-05-16T15:05:36.349378-07:00 WARNING kernel: [ 3291.478673] WARNING: CPU: 2 PID: 8000 at ../../../../../tmp/portage/sys-kernel/chromeos-kernel-4_4-4.4.127-r1483/work/chromeos-kernel-4_4-4.4.127/fs/sysfs/group.c:237 sysfs_remove_group+0x50/0x82
2018-05-16T15:05:36.349381-07:00 WARNING kernel: [ 3291.478677] sysfs group ffffffff8eaa0eb0 not found for kobject 'media2'
2018-05-16T15:05:36.349383-07:00 WARNING kernel: [ 3291.478679] Modules linked in: cmac rfcomm evdi uinput snd_soc_kbl_rt5663_max98927 snd_soc_hdac_hdmi snd_soc_skl_ssp_clk snd_soc_dmic snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_sst_match snd_hda_ext_core snd_hda_core snd_soc_rt5663 acpi_als zram kfifo_buf snd_soc_rl6231 industrialio bridge stp llc ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_mark fuse snd_seq_dummy snd_seq uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core joydev ip6table_filter iwlmvm r8169 mii iwlwifi iwl7000_mac80211 cfg80211 btusb btrtl btbcm btintel bluetooth snd_usb_audio snd_usbmidi_lib snd_hwdep snd_rawmidi snd_seq_device
2018-05-16T15:05:36.349387-07:00 WARNING kernel: [ 3291.478768] CPU: 2 PID: 8000 Comm: V4L2CaptureThre Not tainted 4.4.127-13889-gbb5828aee0b6 #1
2018-05-16T15:05:36.349388-07:00 WARNING kernel: [ 3291.478771] Hardware name: Google Fizz/Fizz, BIOS Google_Fizz.10139.113.0 03/30/2018
2018-05-16T15:05:36.349390-07:00 WARNING kernel: [ 3291.478774]  ffffffff8e7c6e86 a2a11d829e60efef ffff88024be97ad8 ffffffff8e0df908
2018-05-16T15:05:36.349391-07:00 WARNING kernel: [ 3291.478783]  ffff88024be97b10 ffffffff8e0df8bd a2a11d829e60efef ffff88024be97ba0
2018-05-16T15:05:36.349392-07:00 WARNING kernel: [ 3291.478790]  0000000000000286 a2a11d829e60efef ffff88024be97ba0 ffff88024be97b50
2018-05-16T15:05:36.349393-07:00 WARNING kernel: [ 3291.478798] Call Trace:
2018-05-16T15:05:36.349395-07:00 WARNING kernel: [ 3291.478804]  [<ffffffff8e0df908>] __dump_stack+0x19/0x1b
2018-05-16T15:05:36.349396-07:00 WARNING kernel: [ 3291.478809]  [<ffffffff8e0df8bd>] dump_stack+0x4f/0x81
2018-05-16T15:05:36.349397-07:00 WARNING kernel: [ 3291.478813]  [<ffffffff8de6ce72>] __warn+0xba/0xf1
2018-05-16T15:05:36.349399-07:00 WARNING kernel: [ 3291.478817]  [<ffffffff8de6cf08>] warn_slowpath_fmt+0x5f/0x79
2018-05-16T15:05:36.349400-07:00 WARNING kernel: [ 3291.478821]  [<ffffffff8dfd5500>] ? kernfs_find_ns+0x7a/0xbd
2018-05-16T15:05:36.349402-07:00 WARNING kernel: [ 3291.478825]  [<ffffffff8dfd7cf0>] ? kernfs_find_and_get+0xb/0xd
2018-05-16T15:05:36.349403-07:00 WARNING kernel: [ 3291.478829]  [<ffffffff8dfd7c9a>] sysfs_remove_group+0x50/0x82
2018-05-16T15:05:36.349405-07:00 WARNING kernel: [ 3291.478833]  [<ffffffff8e27c2bf>] dpm_sysfs_remove+0x50/0x55
2018-05-16T15:05:36.349406-07:00 WARNING kernel: [ 3291.478837]  [<ffffffff8e27243d>] device_del+0x56/0x2b9
2018-05-16T15:05:36.349407-07:00 WARNING kernel: [ 3291.478841]  [<ffffffff8e2726b2>] device_unregister+0x12/0x1d
2018-05-16T15:05:36.349408-07:00 WARNING kernel: [ 3291.478846]  [<ffffffff8e359b23>] media_devnode_unregister+0x45/0x48
2018-05-16T15:05:36.349409-07:00 WARNING kernel: [ 3291.478850]  [<ffffffff8e3590a4>] media_device_unregister+0x50/0x57
2018-05-16T15:05:36.349411-07:00 WARNING kernel: [ 3291.478857]  [<ffffffffc0173a6d>] uvc_delete+0x5e/0x118 [uvcvideo]
2018-05-16T15:05:36.349412-07:00 WARNING kernel: [ 3291.478862]  [<ffffffffc01739f5>] uvc_release+0x3b/0x55 [uvcvideo]
2018-05-16T15:05:36.349413-07:00 WARNING kernel: [ 3291.478866]  [<ffffffff8e35b7ec>] v4l2_device_release+0xb3/0xe6
2018-05-16T15:05:36.349414-07:00 WARNING kernel: [ 3291.478870]  [<ffffffff8e273a79>] device_release+0x35/0x94
2018-05-16T15:05:36.349416-07:00 WARNING kernel: [ 3291.478874]  [<ffffffff8e0e2699>] kobject_cleanup+0x4f/0x63
2018-05-16T15:05:36.349417-07:00 WARNING kernel: [ 3291.478877]  [<ffffffff8e0e1d57>] kobject_put+0x63/0x7e
2018-05-16T15:05:36.349418-07:00 WARNING kernel: [ 3291.478881]  [<ffffffff8e271590>] put_device+0x17/0x19
2018-05-16T15:05:36.349420-07:00 WARNING kernel: [ 3291.478884]  [<ffffffff8e35bca4>] v4l2_release+0x76/0x7e
2018-05-16T15:05:36.349422-07:00 WARNING kernel: [ 3291.478888]  [<ffffffff8e02f8ca>] __fput+0xe2/0x1d6
2018-05-16T15:05:36.349423-07:00 WARNING kernel: [ 3291.478894]  [<ffffffff8df8c17e>] ____fput+0xe/0x10
2018-05-16T15:05:36.349425-07:00 WARNING kernel: [ 3291.478898]  [<ffffffff8df12bf6>] task_work_run+0x69/0xac
2018-05-16T15:05:36.349426-07:00 WARNING kernel: [ 3291.478903]  [<ffffffff8de67506>] prepare_exit_to_usermode+0x71/0x7d
2018-05-16T15:05:36.349428-07:00 WARNING kernel: [ 3291.478907]  [<ffffffff8de6754f>] syscall_return_slowpath+0x3d/0x154
2018-05-16T15:05:36.349430-07:00 WARNING kernel: [ 3291.478911]  [<ffffffff8df12b70>] ? task_work_add+0x64/0x81
2018-05-16T15:05:36.349431-07:00 WARNING kernel: [ 3291.478914]  [<ffffffff8e02f7ad>] ? fput+0x74/0xaf
2018-05-16T15:05:36.349433-07:00 WARNING kernel: [ 3291.478919]  [<ffffffff8e02e39f>] ? filp_close+0x44/0x71
2018-05-16T15:05:36.349434-07:00 WARNING kernel: [ 3291.478923]  [<ffffffff8e03b6cc>] ? __close_fd+0x91/0xb1
2018-05-16T15:05:36.349436-07:00 WARNING kernel: [ 3291.478929]  [<ffffffff8e59ff54>] int_ret_from_sys_call+0x25/0x93
2018-05-16T15:05:36.349437-07:00 WARNING kernel: [ 3291.478932] ---[ end trace 823afe5db6a8bf91 ]---
2018-05-16T15:05:36.361240-07:00 INFO crash_reporter[8022]: libminijail[8022]: mount /dev/log -> /dev/log type ''
2018-05-16T15:05:36.378566-07:00 INFO crash_reporter[8022]: Processing kernel warning: always collect from developer builds
2018-05-16T15:05:36.388078-07:00 INFO crash_reporter[8022]: Stored kernel warning into /var/spool/crash/kernel_warning.20180516.150536.0.kcrash
2018-05-16T15:05:55.693344-07:00 INFO kernel: [ 3310.822379] usb 1-4: new high-speed USB device number 11 using xhci_hcd
2018-05-16T15:05:58.060388-07:00 INFO kernel: [ 3313.189617] usb 1-4: New USB device found, idVendor=046d, idProduct=0853, bcdDevice= 0.13
2018-05-16T15:05:58.060424-07:00 INFO kernel: [ 3313.189635] usb 1-4: New USB device strings: Mfr=0, Product=2, SerialNumber=0
2018-05-16T15:05:58.060428-07:00 INFO kernel: [ 3313.189644] usb 1-4: Product: PTZ Pro Camera
2018-05-16T15:05:58.062333-07:00 INFO kernel: [ 3313.192143] uvcvideo: Found UVC 1.00 device PTZ Pro Camera (046d:0853)
2018-05-16T15:05:58.067339-07:00 INFO kernel: [ 3313.196922] input: PTZ Pro Camera as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4:1.2/0003:046D:0853.0008/input/input11
2018-05-16T15:05:58.118279-07:00 INFO kernel: [ 3313.247683] hid-generic 0003:046D:0853.0008: input,hiddev0,hidraw3: USB HID v1.11 Device [PTZ Pro Camera] on usb-0000:00:14.0-4/input2
2018-05-16T15:06:26.341279-07:00 INFO kernel: [ 3341.470968] usb 1-4: USB disconnect, device number 11
2018-05-16T15:06:26.342728-07:00 WARNING kernel: [ 3341.473289] ------------[ cut here ]------------
kernel_warning.20180516.150536.0.log
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Comment 5 by darekm@chromium.org, May 17 2018 

The logs from 67, isn't it the same as 2 last traces from https://bugs.chromium.org/p/chromium/issues/detail?id=750873 ?
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