[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 14.277127][ T1672] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.315702][ T1710] random: sshd: uninitialized urandom read (32 bytes read) [ 26.330885][ C1] random: crng init done [ 35.834137][ T1725] can: request_module (can-proto-0) failed. [ 35.844941][ T1725] can: request_module (can-proto-0) failed. Warning: Permanently added '10.128.0.189' (ECDSA) to the list of known hosts. 2019/09/20 09:00:53 parsed 1 programs 2019/09/20 09:00:53 executed programs: 0 [ 43.855871][ T1864] cgroup1: Unknown subsys name 'perf_event' [ 43.857254][ T1866] cgroup1: Unknown subsys name 'perf_event' [ 43.862436][ T1864] cgroup1: Unknown subsys name 'net_cls' [ 43.868420][ T1866] cgroup1: Unknown subsys name 'net_cls' [ 43.883803][ T1869] cgroup1: Unknown subsys name 'perf_event' [ 43.890418][ T1869] cgroup1: Unknown subsys name 'net_cls' [ 43.897404][ T1873] cgroup1: Unknown subsys name 'perf_event' [ 43.904052][ T1874] cgroup1: Unknown subsys name 'perf_event' [ 43.904550][ T1875] cgroup1: Unknown subsys name 'perf_event' [ 43.910243][ T1874] cgroup1: Unknown subsys name 'net_cls' [ 43.921976][ T1873] cgroup1: Unknown subsys name 'net_cls' [ 43.927529][ T1875] cgroup1: Unknown subsys name 'net_cls' [ 47.132701][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 47.142678][ T83] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 47.172933][ T2852] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 47.192729][ T2860] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 47.212664][ T12] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 47.212819][ T2870] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 47.372663][ T22] usb 1-1: Using ep0 maxpacket: 8 [ 47.382725][ T83] usb 2-1: Using ep0 maxpacket: 8 [ 47.422797][ T2852] usb 3-1: Using ep0 maxpacket: 8 [ 47.433191][ T2860] usb 6-1: Using ep0 maxpacket: 8 [ 47.452657][ T12] usb 4-1: Using ep0 maxpacket: 8 [ 47.462914][ T2870] usb 5-1: Using ep0 maxpacket: 8 [ 47.492915][ T22] usb 1-1: config 0 has an invalid interface number: 22 but max is 0 [ 47.501181][ T22] usb 1-1: config 0 has no interface number 0 [ 47.507522][ T83] usb 2-1: config 0 has an invalid interface number: 22 but max is 0 [ 47.515756][ T83] usb 2-1: config 0 has no interface number 0 [ 47.522327][ T83] usb 2-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 47.533364][ T83] usb 2-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 47.544350][ T83] usb 2-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 47.553483][ T83] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 47.561891][ T22] usb 1-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 47.572922][ T22] usb 1-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 47.582765][ T12] usb 4-1: config 0 has an invalid interface number: 22 but max is 0 [ 47.584528][ T22] usb 1-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 47.592576][ T12] usb 4-1: config 0 has no interface number 0 [ 47.601681][ T22] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 47.608067][ T12] usb 4-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 47.615741][ T2860] usb 6-1: config 0 has an invalid interface number: 22 but max is 0 [ 47.626604][ T12] usb 4-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 47.626634][ T12] usb 4-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 47.634705][ T2860] usb 6-1: config 0 has no interface number 0 [ 47.645655][ T12] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 47.654980][ T2852] usb 3-1: config 0 has an invalid interface number: 22 but max is 0 [ 47.669082][ T12] usb 4-1: config 0 descriptor?? [ 47.676849][ T2852] usb 3-1: config 0 has no interface number 0 [ 47.676903][ T2870] usb 5-1: config 0 has an invalid interface number: 22 but max is 0 [ 47.676914][ T2870] usb 5-1: config 0 has no interface number 0 [ 47.676952][ T2870] usb 5-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 47.714218][ T2870] usb 5-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 47.725232][ T2870] usb 5-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 47.732249][ T12] adutux 4-1:0.22: ADU130 now attached to /dev/usb/adutux0 [ 47.734305][ T2870] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 47.734357][ T2852] usb 3-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 47.763483][ T2852] usb 3-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 47.774614][ T2852] usb 3-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 47.783670][ T2852] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 47.792034][ T2860] usb 6-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 47.802953][ T2860] usb 6-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 47.813943][ T2860] usb 6-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 47.823125][ T2860] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 47.831433][ T83] usb 2-1: config 0 descriptor?? [ 47.837444][ T22] usb 1-1: config 0 descriptor?? [ 47.843600][ T2870] usb 5-1: config 0 descriptor?? [ 47.849139][ T2860] usb 6-1: config 0 descriptor?? [ 47.855232][ T2852] usb 3-1: config 0 descriptor?? [ 47.876722][ T83] adutux 2-1:0.22: ADU130 now attached to /dev/usb/adutux1 [ 47.886594][ T22] adutux 1-1:0.22: ADU130 now attached to /dev/usb/adutux2 [ 47.899981][ T2860] adutux 6-1:0.22: ADU130 now attached to /dev/usb/adutux4 [ 47.907775][ T2870] adutux 5-1:0.22: ADU130 now attached to /dev/usb/adutux3 [ 47.917844][ T2852] adutux 3-1:0.22: ADU130 now attached to /dev/usb/adutux5 [ 47.933212][ T12] usb 4-1: USB disconnect, device number 2 [ 48.074213][ T2852] usb 2-1: USB disconnect, device number 2 [ 48.074302][ T103] usb 1-1: USB disconnect, device number 2 [ 48.091734][ T83] usb 5-1: USB disconnect, device number 2 [ 48.096582][ T2883] usb 3-1: USB disconnect, device number 2 [ 48.107089][ T5] usb 6-1: USB disconnect, device number 2 [ 48.722681][ T83] usb 4-1: new high-speed USB device number 3 using dummy_hcd [ 48.842688][ T2852] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 48.850494][ T2870] usb 2-1: new high-speed USB device number 3 using dummy_hcd [ 48.858594][ T2860] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 48.866209][ T22] usb 3-1: new high-speed USB device number 3 using dummy_hcd [ 48.882666][ T5] usb 6-1: new high-speed USB device number 3 using dummy_hcd [ 48.992719][ T83] usb 4-1: Using ep0 maxpacket: 8 [ 49.082862][ T2852] usb 1-1: Using ep0 maxpacket: 8 [ 49.112831][ T2860] usb 5-1: Using ep0 maxpacket: 8 [ 49.118103][ T22] usb 3-1: Using ep0 maxpacket: 8 [ 49.123502][ T2870] usb 2-1: Using ep0 maxpacket: 8 [ 49.128748][ T83] usb 4-1: config 0 has an invalid interface number: 22 but max is 0 [ 49.136982][ T83] usb 4-1: config 0 has no interface number 0 [ 49.142692][ T5] usb 6-1: Using ep0 maxpacket: 8 [ 49.143391][ T83] usb 4-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 49.159281][ T83] usb 4-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 49.170416][ T83] usb 4-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 49.179507][ T83] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 49.188611][ T83] usb 4-1: config 0 descriptor?? [ 49.223077][ T2852] usb 1-1: config 0 has an invalid interface number: 22 but max is 0 [ 49.231165][ T2852] usb 1-1: config 0 has no interface number 0 [ 49.240729][ T83] adutux 4-1:0.22: ADU130 now attached to /dev/usb/adutux0 [ 49.248449][ T2852] usb 1-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 49.259522][ T2852] usb 1-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 49.270777][ T2852] usb 1-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 49.272676][ T5] usb 6-1: config 0 has an invalid interface number: 22 but max is 0 [ 49.279853][ T2852] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 49.279907][ T2860] usb 5-1: config 0 has an invalid interface number: 22 but max is 0 [ 49.287967][ T5] usb 6-1: config 0 has no interface number 0 [ 49.295961][ T2860] usb 5-1: config 0 has no interface number 0 [ 49.304637][ T5] usb 6-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 49.310149][ T2870] usb 2-1: config 0 has an invalid interface number: 22 but max is 0 [ 49.310165][ T2870] usb 2-1: config 0 has no interface number 0 [ 49.316418][ T5] usb 6-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 49.327327][ T22] usb 3-1: config 0 has an invalid interface number: 22 but max is 0 [ 49.335368][ T5] usb 6-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 49.341420][ T22] usb 3-1: config 0 has no interface number 0 [ 49.352392][ T5] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 49.367596][ T2870] usb 2-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 49.371192][ T5] usb 6-1: config 0 descriptor?? [ 49.375629][ T2870] usb 2-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 49.375654][ T2870] usb 2-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 49.419517][ T2870] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 49.427587][ T2860] usb 5-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 49.438602][ T2860] usb 5-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 49.440680][ T5] adutux 6-1:0.22: ADU130 now attached to /dev/usb/adutux1 [ 49.449620][ T2860] usb 5-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 49.449634][ T2860] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 49.450394][ T22] usb 3-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 49.485296][ T22] usb 3-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 49.496297][ T22] usb 3-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 49.505349][ T22] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 49.514355][ T2852] usb 1-1: config 0 descriptor?? [ 49.520037][ T2860] usb 5-1: config 0 descriptor?? [ 49.525945][ T2870] usb 2-1: config 0 descriptor?? [ 49.531541][ T83] usb 4-1: USB disconnect, device number 3 [ 49.538396][ T22] usb 3-1: config 0 descriptor?? [ 49.555026][ T2852] adutux 1-1:0.22: ADU130 now attached to /dev/usb/adutux0 [ 49.566662][ T2870] adutux 2-1:0.22: ADU130 now attached to /dev/usb/adutux3 [ 49.574366][ T2860] adutux 5-1:0.22: ADU130 now attached to /dev/usb/adutux2 [ 49.586715][ T22] adutux 3-1:0.22: ADU130 now attached to /dev/usb/adutux4 [ 49.633579][ T22] usb 6-1: USB disconnect, device number 3 [ 49.753727][ T83] usb 1-1: USB disconnect, device number 3 [ 49.763603][ T2850] adutux: adu_open - error, can't find device for minor 0 [ 49.770876][ T2871] adutux: adu_open - error, can't find device for minor 0 [ 49.771096][ T5] usb 2-1: USB disconnect, device number 3 [ 49.778198][ T2860] usb 5-1: USB disconnect, device number 3 [ 49.784551][ T2857] adutux: adu_open - error, can't find device for minor 0 2019/09/20 09:00:59 executed programs: 6 [ 49.801330][ T2883] usb 3-1: USB disconnect, device number 3 [ 50.202672][ T83] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 50.210305][ T22] usb 6-1: new high-speed USB device number 4 using dummy_hcd [ 50.218384][ T2870] usb 4-1: new high-speed USB device number 4 using dummy_hcd [ 50.242675][ T5] usb 2-1: new high-speed USB device number 4 using dummy_hcd [ 50.252812][ T2883] usb 3-1: new high-speed USB device number 4 using dummy_hcd [ 50.372669][ T2860] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 50.442752][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 50.472649][ T22] usb 6-1: Using ep0 maxpacket: 8 [ 50.479733][ T2870] usb 4-1: Using ep0 maxpacket: 8 [ 50.493399][ T2883] usb 3-1: Using ep0 maxpacket: 8 [ 50.498548][ T5] usb 2-1: Using ep0 maxpacket: 8 [ 50.562907][ T83] usb 1-1: config 0 has an invalid interface number: 22 but max is 0 [ 50.571062][ T83] usb 1-1: config 0 has no interface number 0 [ 50.577297][ T83] usb 1-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 50.588296][ T83] usb 1-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 50.599328][ T83] usb 1-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 50.608455][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 50.616568][ T22] usb 6-1: config 0 has an invalid interface number: 22 but max is 0 [ 50.624663][ T22] usb 6-1: config 0 has no interface number 0 [ 50.630756][ T2870] usb 4-1: config 0 has an invalid interface number: 22 but max is 0 [ 50.633515][ T2883] usb 3-1: config 0 has an invalid interface number: 22 but max is 0 [ 50.638859][ T2870] usb 4-1: config 0 has no interface number 0 [ 50.646923][ T2883] usb 3-1: config 0 has no interface number 0 [ 50.647449][ T5] usb 2-1: config 0 has an invalid interface number: 22 but max is 0 [ 50.653050][ T2860] usb 5-1: Using ep0 maxpacket: 8 [ 50.659103][ T5] usb 2-1: config 0 has no interface number 0 [ 50.667322][ T22] usb 6-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 50.672851][ T2883] usb 3-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 50.678403][ T22] usb 6-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 50.678432][ T22] usb 6-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 50.689303][ T2883] usb 3-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 50.689331][ T2883] usb 3-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 50.700241][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 50.711159][ T2883] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 50.720607][ T2870] usb 4-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 50.731870][ T5] usb 2-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 50.740810][ T2870] usb 4-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 50.740842][ T2870] usb 4-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 50.740854][ T2870] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 50.743573][ T2870] usb 4-1: config 0 descriptor?? [ 50.748922][ T5] usb 2-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 50.748948][ T5] usb 2-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 50.757384][ T83] usb 1-1: config 0 descriptor?? [ 50.767877][ T5] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 50.778859][ T5] usb 2-1: config 0 descriptor?? [ 50.785660][ T2883] usb 3-1: config 0 descriptor?? [ 50.790404][ T22] usb 6-1: config 0 descriptor?? [ 50.839205][ T5] adutux 2-1:0.22: ADU130 now attached to /dev/usb/adutux0 [ 50.869617][ T2883] adutux 3-1:0.22: ADU130 now attached to /dev/usb/adutux1 [ 50.883684][ T2860] usb 5-1: config 0 has an invalid interface number: 22 but max is 0 [ 50.891970][ T2860] usb 5-1: config 0 has no interface number 0 [ 50.906327][ T22] adutux 6-1:0.22: ADU130 now attached to /dev/usb/adutux4 [ 50.914190][ T83] adutux 1-1:0.22: ADU130 now attached to /dev/usb/adutux3 [ 50.921719][ T2870] adutux 4-1:0.22: ADU130 now attached to /dev/usb/adutux2 [ 50.933500][ T2860] usb 5-1: config 0 interface 22 altsetting 0 endpoint 0xF has an invalid bInterval 0, changing to 7 [ 50.944513][ T2860] usb 5-1: config 0 interface 22 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 50.955603][ T2860] usb 5-1: New USB device found, idVendor=0a07, idProduct=0082, bcdDevice=b9.42 [ 50.964685][ T2860] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 50.973590][ T2860] usb 5-1: config 0 descriptor?? [ 51.015032][ T2860] adutux 5-1:0.22: ADU130 now attached to /dev/usb/adutux5 [ 51.034095][ T2860] usb 2-1: USB disconnect, device number 4 [ 51.053020][ T2899] adutux: adu_open - error, can't find device for minor 0 [ 51.061041][ T2870] usb 3-1: USB disconnect, device number 4 [ 51.067709][ T2860] ================================================================== [ 51.075913][ T2860] BUG: KASAN: use-after-free in __mutex_unlock_slowpath+0x96/0x670 [ 51.083790][ T2860] Read of size 8 at addr ffff8881d22b0280 by task kworker/1:4/2860 [ 51.091670][ T2860] [ 51.094011][ T2860] CPU: 1 PID: 2860 Comm: kworker/1:4 Not tainted 5.3.0-rc2+ #0 [ 51.094551][ T2883] usb 6-1: USB disconnect, device number 4 [ 51.101553][ T2860] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.107476][ T5] usb 4-1: USB disconnect, device number 4 [ 51.117433][ T2860] Workqueue: usb_hub_wq hub_event [ 51.117440][ T2860] Call Trace: [ 51.117457][ T2860] dump_stack+0xca/0x13e [ 51.117468][ T2860] ? __mutex_unlock_slowpath+0x96/0x670 [ 51.117483][ T2860] ? __mutex_unlock_slowpath+0x96/0x670 [ 51.146906][ T2860] print_address_description+0x6a/0x32c [ 51.150833][ T103] usb 1-1: USB disconnect, device number 4 [ 51.152585][ T2860] ? __mutex_unlock_slowpath+0x96/0x670 [ 51.152596][ T2860] ? __mutex_unlock_slowpath+0x96/0x670 [ 51.152610][ T2860] __kasan_report.cold+0x1a/0x33 [ 51.152621][ T2860] ? kfree_const+0x50/0x60 [ 51.152632][ T2860] ? __mutex_unlock_slowpath+0x96/0x670 [ 51.152642][ T2860] kasan_report+0xe/0x12 [ 51.152653][ T2860] check_memory_region+0x128/0x190 [ 51.152663][ T2860] __mutex_unlock_slowpath+0x96/0x670 [ 51.152672][ T2860] ? wait_for_completion+0x3c0/0x3c0 [ 51.152687][ T2860] ? wait_for_completion+0x3c0/0x3c0 [ 51.210069][ T2860] adu_disconnect+0x83/0x150 [ 51.214672][ T2860] usb_unbind_interface+0x1bd/0x8a0 [ 51.219869][ T2860] ? usb_autoresume_device+0x60/0x60 [ 51.225143][ T2860] device_release_driver_internal+0x404/0x4c0 [ 51.231206][ T2860] bus_remove_device+0x2dc/0x4a0 [ 51.236161][ T2860] device_del+0x420/0xb10 [ 51.240584][ T2860] ? __device_links_no_driver+0x240/0x240 [ 51.246292][ T2860] ? usb_remove_ep_devs+0x3e/0x80 [ 51.251316][ T2860] ? remove_intf_ep_devs+0x13f/0x1d0 [ 51.256702][ T2860] usb_disable_device+0x211/0x690 [ 51.261828][ T2860] usb_disconnect+0x284/0x8d0 [ 51.266520][ T2860] hub_event+0x1454/0x3640 [ 51.270929][ T2860] ? find_held_lock+0x2d/0x110 [ 51.275703][ T2860] ? mark_held_locks+0xe0/0xe0 [ 51.280466][ T2860] ? hub_port_debounce+0x260/0x260 [ 51.285559][ T2860] process_one_work+0x92b/0x1530 [ 51.290495][ T2860] ? pwq_dec_nr_in_flight+0x310/0x310 [ 51.295850][ T2860] ? do_raw_spin_lock+0x11a/0x280 [ 51.300865][ T2860] worker_thread+0x96/0xe20 [ 51.305377][ T2860] ? process_one_work+0x1530/0x1530 [ 51.310562][ T2860] kthread+0x318/0x420 [ 51.314636][ T2860] ? kthread_create_on_node+0xf0/0xf0 [ 51.320004][ T2860] ret_from_fork+0x24/0x30 [ 51.324417][ T2860] [ 51.326748][ T2860] Allocated by task 5: [ 51.330814][ T2860] save_stack+0x1b/0x80 [ 51.334980][ T2860] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 51.340605][ T2860] adu_probe+0x7d/0x6e0 [ 51.344745][ T2860] usb_probe_interface+0x305/0x7a0 [ 51.349839][ T2860] really_probe+0x281/0x650 [ 51.354325][ T2860] driver_probe_device+0x101/0x1b0 [ 51.359421][ T2860] __device_attach_driver+0x1c2/0x220 [ 51.364776][ T2860] bus_for_each_drv+0x15c/0x1e0 [ 51.369608][ T2860] __device_attach+0x217/0x360 [ 51.374362][ T2860] bus_probe_device+0x1e4/0x290 [ 51.379216][ T2860] device_add+0xae6/0x16f0 [ 51.383623][ T2860] usb_set_configuration+0xdf6/0x1670 [ 51.388994][ T2860] generic_probe+0x9d/0xd5 [ 51.393494][ T2860] usb_probe_device+0x99/0x100 [ 51.398252][ T2860] really_probe+0x281/0x650 [ 51.402756][ T2860] driver_probe_device+0x101/0x1b0 [ 51.407864][ T2860] __device_attach_driver+0x1c2/0x220 [ 51.413222][ T2860] bus_for_each_drv+0x15c/0x1e0 [ 51.418076][ T2860] __device_attach+0x217/0x360 [ 51.422833][ T2860] bus_probe_device+0x1e4/0x290 [ 51.427680][ T2860] device_add+0xae6/0x16f0 [ 51.432137][ T2860] usb_new_device.cold+0x6a4/0xe79 [ 51.437248][ T2860] hub_event+0x1b5c/0x3640 [ 51.441665][ T2860] process_one_work+0x92b/0x1530 [ 51.446607][ T2860] worker_thread+0x96/0xe20 [ 51.451092][ T2860] kthread+0x318/0x420 [ 51.455146][ T2860] ret_from_fork+0x24/0x30 [ 51.459536][ T2860] [ 51.461860][ T2860] Freed by task 2895: [ 51.465836][ T2860] save_stack+0x1b/0x80 [ 51.469981][ T2860] __kasan_slab_free+0x130/0x180 [ 51.475002][ T2860] kfree+0xe4/0x2f0 [ 51.478796][ T2860] adu_release+0x3cc/0x590 [ 51.483202][ T2860] __fput+0x2d7/0x840 [ 51.487175][ T2860] task_work_run+0x13f/0x1c0 [ 51.491751][ T2860] exit_to_usermode_loop+0x1d2/0x200 [ 51.497037][ T2860] do_syscall_64+0x45f/0x580 [ 51.501628][ T2860] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.507505][ T2860] [ 51.509838][ T2860] The buggy address belongs to the object at ffff8881d22b0280 [ 51.509838][ T2860] which belongs to the cache kmalloc-512 of size 512 [ 51.523906][ T2860] The buggy address is located 0 bytes inside of [ 51.523906][ T2860] 512-byte region [ffff8881d22b0280, ffff8881d22b0480) [ 51.536986][ T2860] The buggy address belongs to the page: [ 51.542613][ T2860] page:ffffea000748ac00 refcount:1 mapcount:0 mapping:ffff8881da002500 index:0x0 compound_mapcount: 0 [ 51.553538][ T2860] flags: 0x200000000010200(slab|head) [ 51.558935][ T2860] raw: 0200000000010200 ffffea00074fbc00 0000000200000002 ffff8881da002500 [ 51.567524][ T2860] raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000 [ 51.576222][ T2860] page dumped because: kasan: bad access detected [ 51.582623][ T2860] [ 51.584946][ T2860] Memory state around the buggy address: [ 51.590573][ T2860] ffff8881d22b0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 51.598635][ T2860] ffff8881d22b0200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.606792][ T2860] >ffff8881d22b0280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 51.614845][ T2860] ^ [ 51.618908][ T2860] ffff8881d22b0300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 51.626953][ T2860] ffff8881d22b0380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 51.635008][ T2860] ================================================================== [ 51.643066][ T2860] Disabling lock debugging due to kernel taint [ 51.649341][ T2860] Kernel panic - not syncing: panic_on_warn set ... [ 51.653920][ T12] usb 5-1: USB disconnect, device number 4 [ 51.655937][ T2860] CPU: 1 PID: 2860 Comm: kworker/1:4 Tainted: G B 5.3.0-rc2+ #0 [ 51.670644][ T2860] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.680723][ T2860] Workqueue: usb_hub_wq hub_event [ 51.685813][ T2860] Call Trace: [ 51.689087][ T2860] dump_stack+0xca/0x13e [ 51.693321][ T2860] panic+0x2a3/0x6da [ 51.697213][ T2860] ? add_taint.cold+0x16/0x16 [ 51.701876][ T2860] ? retint_kernel+0x10/0x10 [ 51.706448][ T2860] ? trace_hardirqs_on+0x55/0x1e0 [ 51.711460][ T2860] ? __mutex_unlock_slowpath+0x96/0x670 [ 51.716986][ T2860] end_report+0x43/0x49 [ 51.721124][ T2860] ? __mutex_unlock_slowpath+0x96/0x670 [ 51.726651][ T2860] __kasan_report.cold+0xd/0x33 [ 51.731498][ T2860] ? kfree_const+0x50/0x60 [ 51.735916][ T2860] ? __mutex_unlock_slowpath+0x96/0x670 [ 51.741452][ T2860] kasan_report+0xe/0x12 [ 51.745675][ T2860] check_memory_region+0x128/0x190 [ 51.750774][ T2860] __mutex_unlock_slowpath+0x96/0x670 [ 51.756143][ T2860] ? wait_for_completion+0x3c0/0x3c0 [ 51.761429][ T2860] ? wait_for_completion+0x3c0/0x3c0 [ 51.766699][ T2860] adu_disconnect+0x83/0x150 [ 51.771271][ T2860] usb_unbind_interface+0x1bd/0x8a0 [ 51.776471][ T2860] ? usb_autoresume_device+0x60/0x60 [ 51.781735][ T2860] device_release_driver_internal+0x404/0x4c0 [ 51.787789][ T2860] bus_remove_device+0x2dc/0x4a0 [ 51.792715][ T2860] device_del+0x420/0xb10 [ 51.797043][ T2860] ? __device_links_no_driver+0x240/0x240 [ 51.802925][ T2860] ? usb_remove_ep_devs+0x3e/0x80 [ 51.807937][ T2860] ? remove_intf_ep_devs+0x13f/0x1d0 [ 51.813206][ T2860] usb_disable_device+0x211/0x690 [ 51.818220][ T2860] usb_disconnect+0x284/0x8d0 [ 51.822874][ T2860] hub_event+0x1454/0x3640 [ 51.827268][ T2860] ? find_held_lock+0x2d/0x110 [ 51.832011][ T2860] ? mark_held_locks+0xe0/0xe0 [ 51.836766][ T2860] ? hub_port_debounce+0x260/0x260 [ 51.841861][ T2860] process_one_work+0x92b/0x1530 [ 51.846784][ T2860] ? pwq_dec_nr_in_flight+0x310/0x310 [ 51.852141][ T2860] ? do_raw_spin_lock+0x11a/0x280 [ 51.857161][ T2860] worker_thread+0x96/0xe20 [ 51.861659][ T2860] ? process_one_work+0x1530/0x1530 [ 51.866849][ T2860] kthread+0x318/0x420 [ 51.870918][ T2860] ? kthread_create_on_node+0xf0/0xf0 [ 51.876295][ T2860] ret_from_fork+0x24/0x30 [ 51.881214][ T2860] Kernel Offset: disabled [ 51.885548][ T2860] Rebooting in 86400 seconds..