Warning: Permanently added '10.128.0.252' (ECDSA) to the list of known hosts. 2020/10/11 17:47:59 parsed 1 programs 2020/10/11 17:48:00 executed programs: 0 [ 27.119157][ T459] cgroup: Unknown subsys name 'perf_event' [ 27.145470][ T463] cgroup: Unknown subsys name 'perf_event' [ 27.147011][ T459] cgroup: Unknown subsys name 'net_cls' [ 27.155260][ T463] cgroup: Unknown subsys name 'net_cls' [ 27.164371][ T465] cgroup: Unknown subsys name 'perf_event' [ 27.166135][ T464] cgroup: Unknown subsys name 'perf_event' [ 27.174956][ T465] cgroup: Unknown subsys name 'net_cls' [ 27.179171][ T464] cgroup: Unknown subsys name 'net_cls' [ 27.188492][ T466] cgroup: Unknown subsys name 'perf_event' [ 27.194578][ T466] cgroup: Unknown subsys name 'net_cls' [ 27.206403][ T473] cgroup: Unknown subsys name 'perf_event' [ 27.224436][ T473] cgroup: Unknown subsys name 'net_cls' [ 34.535247][ T479] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.543174][ T479] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.591488][ T472] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.599458][ T472] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.608764][ T476] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.616780][ T476] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.628815][ T122] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 34.644369][ T122] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 34.681935][ T476] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.689976][ T476] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.701974][ T122] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 34.719536][ T122] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 34.735066][ T7] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.743070][ T7] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.781470][ T479] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.789444][ T479] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.791164][ T2197] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.796877][ T476] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.805098][ T2197] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.812633][ T476] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.825633][ T205] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 34.845571][ T205] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 34.868264][ T205] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 34.894727][ T205] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 34.913473][ T2197] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.921528][ T2197] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.932102][ T7] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.939901][ T205] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 34.940143][ T7] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.980272][ T2197] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.988576][ T2197] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 35.002665][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 35.027746][ T7] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 35.035881][ T7] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 35.044576][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 35.061055][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 35.064289][ T122] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 35.184249][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 35.294183][ T205] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 35.344193][ T5] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 35.354166][ T122] usb 2-1: Using ep0 maxpacket: 8 [ 35.394213][ T17] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 35.444226][ T3152] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 35.464525][ T22] usb 1-1: Using ep0 maxpacket: 8 [ 35.484343][ T122] usb 2-1: config 0 has an invalid interface number: 86 but max is 0 [ 35.492528][ T122] usb 2-1: config 0 has no interface number 0 [ 35.499664][ T122] usb 2-1: config 0 interface 86 altsetting 0 endpoint 0xE has invalid wMaxPacketSize 0 [ 35.509543][ T122] usb 2-1: config 0 interface 86 altsetting 0 bulk endpoint 0xE has invalid maxpacket 0 [ 35.519294][ T122] usb 2-1: config 0 interface 86 altsetting 0 endpoint 0x82 has invalid wMaxPacketSize 0 [ 35.529355][ T122] usb 2-1: New USB device found, idVendor=0ccd, idProduct=10af, bcdDevice=77.fc [ 35.534091][ T205] usb 3-1: Using ep0 maxpacket: 8 [ 35.538650][ T122] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 35.555741][ T122] usb 2-1: config 0 descriptor?? [ 35.594176][ T5] usb 5-1: Using ep0 maxpacket: 8 [ 35.609831][ T122] em28xx 2-1:0.86: New device @ 480 Mbps (0ccd:10af, interface 86, class 86) [ 35.618906][ T122] em28xx 2-1:0.86: Video interface 86 found: [ 35.654298][ T22] usb 1-1: config 0 has an invalid interface number: 86 but max is 0 [ 35.662400][ T22] usb 1-1: config 0 has no interface number 0 [ 35.664341][ T205] usb 3-1: config 0 has an invalid interface number: 86 but max is 0 [ 35.670625][ T22] usb 1-1: config 0 interface 86 altsetting 0 endpoint 0xE has invalid wMaxPacketSize 0 [ 35.676564][ T205] usb 3-1: config 0 has no interface number 0 [ 35.676798][ T205] usb 3-1: config 0 interface 86 altsetting 0 endpoint 0xE has invalid wMaxPacketSize 0 [ 35.686349][ T22] usb 1-1: config 0 interface 86 altsetting 0 bulk endpoint 0xE has invalid maxpacket 0 [ 35.686369][ T22] usb 1-1: config 0 interface 86 altsetting 0 endpoint 0x82 has invalid wMaxPacketSize 0 [ 35.692411][ T205] usb 3-1: config 0 interface 86 altsetting 0 bulk endpoint 0xE has invalid maxpacket 0 [ 35.702516][ T22] usb 1-1: New USB device found, idVendor=0ccd, idProduct=10af, bcdDevice=77.fc [ 35.711891][ T205] usb 3-1: config 0 interface 86 altsetting 0 endpoint 0x82 has invalid wMaxPacketSize 0 [ 35.711916][ T205] usb 3-1: New USB device found, idVendor=0ccd, idProduct=10af, bcdDevice=77.fc [ 35.711930][ T205] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 35.713400][ T205] usb 3-1: config 0 descriptor?? [ 35.721817][ T22] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 35.724044][ T17] usb 6-1: Using ep0 maxpacket: 8 [ 35.732015][ T5] usb 5-1: config 0 has an invalid interface number: 86 but max is 0 [ 35.753993][ T3152] usb 4-1: Using ep0 maxpacket: 8 [ 35.759766][ T5] usb 5-1: config 0 has no interface number 0 [ 35.770213][ T5] usb 5-1: config 0 interface 86 altsetting 0 endpoint 0xE has invalid wMaxPacketSize 0 [ 35.778407][ T22] usb 1-1: config 0 descriptor?? [ 35.781187][ T5] usb 5-1: config 0 interface 86 altsetting 0 bulk endpoint 0xE has invalid maxpacket 0 [ 35.829940][ T5] usb 5-1: config 0 interface 86 altsetting 0 endpoint 0x82 has invalid wMaxPacketSize 0 [ 35.836103][ T22] em28xx 1-1:0.86: New device @ 480 Mbps (0ccd:10af, interface 86, class 86) [ 35.839808][ T5] usb 5-1: New USB device found, idVendor=0ccd, idProduct=10af, bcdDevice=77.fc [ 35.848773][ T22] em28xx 1-1:0.86: Video interface 86 found: [ 35.857686][ T5] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 35.860091][ T205] em28xx 3-1:0.86: New device @ 480 Mbps (0ccd:10af, interface 86, class 86) [ 35.881006][ T205] em28xx 3-1:0.86: Video interface 86 found: [ 35.884074][ T122] em28xx 2-1:0.86: unknown em28xx chip ID (0) [ 35.888852][ T5] usb 5-1: config 0 descriptor?? [ 35.904243][ T17] usb 6-1: config 0 has an invalid interface number: 86 but max is 0 [ 35.912349][ T17] usb 6-1: config 0 has no interface number 0 [ 35.918503][ T3152] usb 4-1: config 0 has an invalid interface number: 86 but max is 0 [ 35.926601][ T3152] usb 4-1: config 0 has no interface number 0 [ 35.935104][ T3152] usb 4-1: config 0 interface 86 altsetting 0 endpoint 0xE has invalid wMaxPacketSize 0 [ 35.936817][ T5] em28xx 5-1:0.86: New device @ 480 Mbps (0ccd:10af, interface 86, class 86) [ 35.944971][ T3152] usb 4-1: config 0 interface 86 altsetting 0 bulk endpoint 0xE has invalid maxpacket 0 [ 35.944989][ T3152] usb 4-1: config 0 interface 86 altsetting 0 endpoint 0x82 has invalid wMaxPacketSize 0 [ 35.945019][ T3152] usb 4-1: New USB device found, idVendor=0ccd, idProduct=10af, bcdDevice=77.fc [ 35.945035][ T3152] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 35.945078][ T17] usb 6-1: config 0 interface 86 altsetting 0 endpoint 0xE has invalid wMaxPacketSize 0 [ 35.945095][ T17] usb 6-1: config 0 interface 86 altsetting 0 bulk endpoint 0xE has invalid maxpacket 0 [ 35.945115][ T17] usb 6-1: config 0 interface 86 altsetting 0 endpoint 0x82 has invalid wMaxPacketSize 0 [ 35.954069][ T5] em28xx 5-1:0.86: Video interface 86 found: [ 36.026122][ T17] usb 6-1: New USB device found, idVendor=0ccd, idProduct=10af, bcdDevice=77.fc [ 36.035489][ T17] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 36.045718][ T3152] usb 4-1: config 0 descriptor?? [ 36.051848][ T17] usb 6-1: config 0 descriptor?? [ 36.086566][ T3152] em28xx 4-1:0.86: New device @ 480 Mbps (0ccd:10af, interface 86, class 86) [ 36.095561][ T3152] em28xx 4-1:0.86: Video interface 86 found: [ 36.103522][ T17] em28xx 6-1:0.86: New device @ 480 Mbps (0ccd:10af, interface 86, class 86) [ 36.112571][ T17] em28xx 6-1:0.86: Video interface 86 found: [ 36.118785][ T205] em28xx 3-1:0.86: unknown em28xx chip ID (0) [ 36.174075][ T22] em28xx 1-1:0.86: unknown em28xx chip ID (0) [ 36.180313][ T122] em28xx 2-1:0.86: reading from i2c device at 0xa0 failed (error=-5) [ 36.188567][ T122] em28xx 2-1:0.86: board has no eeprom [ 36.193956][ T5] em28xx 5-1:0.86: unknown em28xx chip ID (0) [ 36.273927][ T205] em28xx 3-1:0.86: reading from i2c device at 0xa0 failed (error=-5) [ 36.282057][ T205] em28xx 3-1:0.86: board has no eeprom [ 36.323873][ T122] em28xx 2-1:0.86: Identified as Terratec Grabby (card=67) [ 36.331130][ T122] em28xx 2-1:0.86: analog set to bulk mode. [ 36.340900][ T122] usb 2-1: USB disconnect, device number 2 [ 36.343976][ T5] em28xx 5-1:0.86: reading from i2c device at 0xa0 failed (error=-5) [ 36.349773][ T122] em28xx 2-1:0.86: Disconnecting em28xx [ 36.354882][ T5] em28xx 5-1:0.86: board has no eeprom [ 36.367234][ T17] em28xx 6-1:0.86: unknown em28xx chip ID (0) [ 36.373443][ T3152] em28xx 4-1:0.86: unknown em28xx chip ID (0) [ 36.384286][ T22] em28xx 1-1:0.86: reading from i2c device at 0xa0 failed (error=-5) [ 36.392360][ T22] em28xx 1-1:0.86: board has no eeprom [ 36.394178][ T205] em28xx 3-1:0.86: Identified as Terratec Grabby (card=67) [ 36.400872][ T3183] em28xx 2-1:0.86: Registering V4L2 extension [ 36.405053][ T205] em28xx 3-1:0.86: analog set to bulk mode. [ 36.422653][ T205] usb 3-1: USB disconnect, device number 2 [ 36.423894][ T3183] em28xx 2-1:0.86: Config register raw data: 0xffffffed [ 36.431106][ T205] em28xx 3-1:0.86: Disconnecting em28xx [ 36.435594][ T3183] em28xx 2-1:0.86: AC97 chip type couldn't be determined [ 36.435608][ T3183] em28xx 2-1:0.86: No AC97 audio processor [ 36.448615][ T3183] usb 2-1: Decoder not found [ 36.458668][ T3183] em28xx 2-1:0.86: failed to create media graph [ 36.464587][ T5] em28xx 5-1:0.86: Identified as Terratec Grabby (card=67) [ 36.465469][ T3183] em28xx 2-1:0.86: V4L2 device video0 deregistered [ 36.472120][ T5] em28xx 5-1:0.86: analog set to bulk mode. [ 36.485129][ T3183] em28xx 2-1:0.86: Registering snapshot button... [ 36.493392][ T5] usb 5-1: USB disconnect, device number 2 [ 36.504585][ T5] em28xx 5-1:0.86: Disconnecting em28xx [ 36.507825][ T22] em28xx 1-1:0.86: Identified as Terratec Grabby (card=67) [ 36.517376][ T22] em28xx 1-1:0.86: analog set to bulk mode. [ 36.529327][ T3183] input: em28xx snapshot button as /devices/platform/dummy_hcd.1/usb2/2-1/2-1:0.86/input/input5 [ 36.540015][ T3152] em28xx 4-1:0.86: reading from i2c device at 0xa0 failed (error=-5) [ 36.548132][ T3152] em28xx 4-1:0.86: board has no eeprom [ 36.553649][ T17] em28xx 6-1:0.86: reading from i2c device at 0xa0 failed (error=-5) [ 36.561779][ T17] em28xx 6-1:0.86: board has no eeprom [ 36.571847][ T22] usb 1-1: USB disconnect, device number 2 [ 36.586245][ T3183] em28xx 2-1:0.86: Remote control support is not available for this card. [ 36.595071][ T12] em28xx 3-1:0.86: Registering V4L2 extension [ 36.598479][ T22] em28xx 1-1:0.86: Disconnecting em28xx [ 36.614563][ T12] em28xx 3-1:0.86: Config register raw data: 0xffffffed [ 36.621583][ T12] em28xx 3-1:0.86: AC97 chip type couldn't be determined [ 36.628851][ T12] em28xx 3-1:0.86: No AC97 audio processor [ 36.636080][ T12] usb 3-1: Decoder not found [ 36.640769][ T12] em28xx 3-1:0.86: failed to create media graph [ 36.647481][ T12] em28xx 3-1:0.86: V4L2 device video0 deregistered [ 36.664264][ T12] em28xx 3-1:0.86: Registering snapshot button... [ 36.671457][ T12] input: em28xx snapshot button as /devices/platform/dummy_hcd.2/usb3/3-1/3-1:0.86/input/input6 [ 36.683884][ T12] em28xx 3-1:0.86: Remote control support is not available for this card. [ 36.692455][ T3207] em28xx 5-1:0.86: Registering V4L2 extension [ 36.703882][ T3152] em28xx 4-1:0.86: Identified as Terratec Grabby (card=67) [ 36.711129][ T3152] em28xx 4-1:0.86: analog set to bulk mode. [ 36.717994][ T17] em28xx 6-1:0.86: Identified as Terratec Grabby (card=67) [ 36.725417][ T17] em28xx 6-1:0.86: analog set to bulk mode. [ 36.733513][ T17] usb 6-1: USB disconnect, device number 2 [ 36.742990][ T3152] usb 4-1: USB disconnect, device number 2 [ 36.745541][ T3207] em28xx 5-1:0.86: Config register raw data: 0xffffffed [ 36.752000][ T17] em28xx 6-1:0.86: Disconnecting em28xx [ 36.756258][ T3207] em28xx 5-1:0.86: AC97 chip type couldn't be determined [ 36.764280][ T3152] em28xx 4-1:0.86: Disconnecting em28xx [ 36.768606][ T3207] em28xx 5-1:0.86: No AC97 audio processor [ 36.791185][ T3207] usb 5-1: Decoder not found [ 36.796033][ T3207] em28xx 5-1:0.86: failed to create media graph [ 36.802696][ T3207] em28xx 5-1:0.86: V4L2 device video0 deregistered [ 36.812258][ T3229] [ 36.814590][ T3229] ====================================================== [ 36.821585][ T3229] WARNING: possible circular locking dependency detected [ 36.828577][ T3229] 5.9.0-rc8-syzkaller #0 Not tainted [ 36.833882][ T3229] ------------------------------------------------------ [ 36.840869][ T3229] v4l_id/3229 is trying to acquire lock: [ 36.846502][ T3229] ffff8881c8a25e00 (&dev->lock#3){+.+.}-{3:3}, at: em28xx_v4l2_open+0xf8/0x570 [ 36.855416][ T3229] [ 36.855416][ T3229] but task is already holding lock: [ 36.862806][ T3229] ffffffff87af0ac8 (videodev_lock){+.+.}-{3:3}, at: v4l2_open+0x20/0x3f0 [ 36.871195][ T3229] [ 36.871195][ T3229] which lock already depends on the new lock. [ 36.871195][ T3229] [ 36.881567][ T3229] [ 36.881567][ T3229] the existing dependency chain (in reverse order) is: [ 36.890549][ T3229] [ 36.890549][ T3229] -> #1 (videodev_lock){+.+.}-{3:3}: [ 36.897986][ T3229] __mutex_lock+0x134/0x10a0 [ 36.903084][ T3229] __video_register_device+0x364/0x4b38 [ 36.909121][ T3229] em28xx_v4l2_init.cold+0x1b92/0x30ca [ 36.915088][ T3229] em28xx_init_extension+0x12f/0x1f0 [ 36.920866][ T3229] request_module_async+0x5d/0x70 [ 36.926387][ T3229] process_one_work+0x94c/0x15f0 [ 36.931818][ T3229] worker_thread+0x7da/0x1120 [ 36.936984][ T3229] kthread+0x392/0x470 [ 36.941551][ T3229] ret_from_fork+0x1f/0x30 [ 36.946471][ T3229] [ 36.946471][ T3229] -> #0 (&dev->lock#3){+.+.}-{3:3}: [ 36.953838][ T3229] __lock_acquire+0x29bb/0x53b0 [ 36.959181][ T3229] lock_acquire+0x18c/0x980 [ 36.964199][ T3229] __mutex_lock+0x134/0x10a0 [ 36.969291][ T3229] em28xx_v4l2_open+0xf8/0x570 [ 36.974556][ T3229] v4l2_open+0x203/0x3f0 [ 36.979301][ T3229] chrdev_open+0x266/0x770 [ 36.984209][ T3229] do_dentry_open+0x4b4/0x1090 [ 36.989466][ T3229] path_openat+0x190d/0x2690 [ 36.994546][ T3229] do_filp_open+0x17e/0x3c0 [ 36.999547][ T3229] do_sys_openat2+0x16d/0x420 [ 37.004713][ T3229] __x64_sys_open+0x119/0x1c0 [ 37.009880][ T3229] do_syscall_64+0x2d/0x40 [ 37.014791][ T3229] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 37.021174][ T3229] [ 37.021174][ T3229] other info that might help us debug this: [ 37.021174][ T3229] [ 37.031384][ T3229] Possible unsafe locking scenario: [ 37.031384][ T3229] [ 37.038808][ T3229] CPU0 CPU1 [ 37.044149][ T3229] ---- ---- [ 37.049484][ T3229] lock(videodev_lock); [ 37.053700][ T3229] lock(&dev->lock#3); [ 37.060351][ T3229] lock(videodev_lock); [ 37.067080][ T3229] lock(&dev->lock#3); [ 37.071204][ T3229] [ 37.071204][ T3229] *** DEADLOCK *** [ 37.071204][ T3229] [ 37.079320][ T3229] 1 lock held by v4l_id/3229: [ 37.083962][ T3229] #0: ffffffff87af0ac8 (videodev_lock){+.+.}-{3:3}, at: v4l2_open+0x20/0x3f0 [ 37.092789][ T3229] [ 37.092789][ T3229] stack backtrace: [ 37.098699][ T3229] CPU: 1 PID: 3229 Comm: v4l_id Not tainted 5.9.0-rc8-syzkaller #0 [ 37.106558][ T3229] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.116583][ T3229] Call Trace: [ 37.119849][ T3229] dump_stack+0x107/0x16e [ 37.124149][ T3229] check_noncircular+0x324/0x3e0 [ 37.129060][ T3229] ? print_circular_bug+0x360/0x360 [ 37.134235][ T3229] ? deref_stack_reg+0x150/0x150 [ 37.139171][ T3229] ? call_rcu_zapped+0xb0/0xb0 [ 37.143905][ T3229] __lock_acquire+0x29bb/0x53b0 [ 37.148726][ T3229] ? lockdep_hardirqs_on_prepare+0x4f0/0x4f0 [ 37.154679][ T3229] lock_acquire+0x18c/0x980 [ 37.159167][ T3229] ? em28xx_v4l2_open+0xf8/0x570 [ 37.164079][ T3229] ? lock_release+0x800/0x800 [ 37.168727][ T3229] ? lock_acquire+0x18c/0x980 [ 37.173379][ T3229] ? v4l2_open+0x20/0x3f0 [ 37.177682][ T3229] ? lock_release+0x800/0x800 [ 37.182331][ T3229] __mutex_lock+0x134/0x10a0 [ 37.186901][ T3229] ? em28xx_v4l2_open+0xf8/0x570 [ 37.191831][ T3229] ? em28xx_v4l2_open+0xf8/0x570 [ 37.196753][ T3229] ? __mutex_lock+0x527/0x10a0 [ 37.201497][ T3229] ? mutex_lock_io_nested+0xf50/0xf50 [ 37.206837][ T3229] ? v4l2_open+0x20/0x3f0 [ 37.211142][ T3229] ? mutex_lock_io_nested+0xf50/0xf50 [ 37.216483][ T3229] ? find_held_lock+0x2d/0x110 [ 37.221231][ T3229] ? chrdev_open+0x58c/0x770 [ 37.225794][ T3229] em28xx_v4l2_open+0xf8/0x570 [ 37.230532][ T3229] ? kobject_get+0xbc/0x150 [ 37.235005][ T3229] v4l2_open+0x203/0x3f0 [ 37.239217][ T3229] ? v4l2_release+0x390/0x390 [ 37.243879][ T3229] chrdev_open+0x266/0x770 [ 37.248332][ T3229] ? cdev_device_add+0x210/0x210 [ 37.253295][ T3229] ? security_file_open+0x205/0x4f0 [ 37.258467][ T3229] do_dentry_open+0x4b4/0x1090 [ 37.263212][ T3229] ? cdev_device_add+0x210/0x210 [ 37.268137][ T3229] ? may_open+0x1e4/0x400 [ 37.272463][ T3229] path_openat+0x190d/0x2690 [ 37.277028][ T3229] ? path_lookupat+0x830/0x830 [ 37.281770][ T3229] ? lockdep_hardirqs_on_prepare+0x4f0/0x4f0 [ 37.287722][ T3229] do_filp_open+0x17e/0x3c0 [ 37.292196][ T3229] ? may_open_dev+0xf0/0xf0 [ 37.296668][ T3229] ? do_raw_spin_lock+0x120/0x260 [ 37.301662][ T3229] ? rwlock_bug.part.0+0x90/0x90 [ 37.306571][ T3229] ? _raw_spin_unlock+0x1a/0x30 [ 37.311408][ T3229] ? __alloc_fd+0x28d/0x600 [ 37.315883][ T3229] do_sys_openat2+0x16d/0x420 [ 37.320533][ T3229] ? build_open_flags+0x650/0x650 [ 37.325527][ T3229] __x64_sys_open+0x119/0x1c0 [ 37.330175][ T3229] ? do_sys_open+0x140/0x140 [ 37.334756][ T3229] ? __secure_computing+0xb4/0x290 [ 37.339840][ T3229] do_syscall_64+0x2d/0x40 [ 37.344235][ T3229] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 37.350098][ T3229] RIP: 0033:0x7fa93ca16840 [ 37.354488][ T3229] Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 [ 37.374080][ T3229] RSP: 002b:00007ffe49d0bbb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 37.382463][ T3229] RAX: ffffffffffffffda RBX: 00007ffe49d0bd28 RCX: 00007fa93ca16840 [ 37.390419][ T3229] RDX: 00007fa93ca02ea0 RSI: 0000000000000000 RDI: 00007ffe49d0cf24 [ 37.398382][ T3229] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 37.406336][ T3229] R10: 0000000000000002 R11: 0000000000000246 R12: 0000562948d788d0 [ 37.414283][ T3229] R13: 00007ffe49d0bd20 R14: 0000000000000000 R15: 0000000000000000 2020/10/11 17:48:10 executed programs: 6 2020/10/11 17:48:16 executed programs: 18