[info] Using makefile-style concurrent boot in runlevel 2. [ 26.133595] audit: type=1800 audit(1541551682.141:21): pid=5551 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.56' (ECDSA) to the list of known hosts. 2018/11/07 00:48:33 parsed 1 programs 2018/11/07 00:48:35 executed programs: 0 syzkaller login: [ 59.466842] IPVS: ftp: loaded support on port[0] = 21 [ 59.473317] IPVS: ftp: loaded support on port[0] = 21 [ 59.479175] IPVS: ftp: loaded support on port[0] = 21 [ 59.480390] IPVS: ftp: loaded support on port[0] = 21 [ 59.487924] IPVS: ftp: loaded support on port[0] = 21 [ 59.497906] IPVS: ftp: loaded support on port[0] = 21 [ 60.284797] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.294855] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.302447] device bridge_slave_0 entered promiscuous mode [ 60.326057] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.334219] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.342052] device bridge_slave_1 entered promiscuous mode [ 60.349085] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.357809] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.365463] device bridge_slave_0 entered promiscuous mode [ 60.382894] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.389250] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.396921] device bridge_slave_0 entered promiscuous mode [ 60.409950] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 60.425121] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.434847] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.443441] device bridge_slave_0 entered promiscuous mode [ 60.450376] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.456700] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.463836] device bridge_slave_1 entered promiscuous mode [ 60.472108] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.478478] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.485645] device bridge_slave_0 entered promiscuous mode [ 60.493631] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.500307] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.507176] device bridge_slave_0 entered promiscuous mode [ 60.515268] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 60.523052] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.529431] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.539964] device bridge_slave_1 entered promiscuous mode [ 60.547444] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.554127] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.561336] device bridge_slave_1 entered promiscuous mode [ 60.567728] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 60.576244] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.583759] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.591146] device bridge_slave_1 entered promiscuous mode [ 60.598212] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.605546] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.612675] device bridge_slave_1 entered promiscuous mode [ 60.620085] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 60.634479] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 60.643904] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 60.655492] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 60.672494] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 60.681617] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 60.707237] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 60.716348] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 60.726062] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 60.744722] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 60.796755] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 60.807986] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 60.819868] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 60.885199] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 60.896581] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 60.905552] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 60.916702] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 60.931831] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 60.976594] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 60.988800] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 60.999331] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 61.062913] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 61.071497] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 61.080981] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.092436] team0: Port device team_slave_0 added [ 61.097550] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.109890] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.127109] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 61.136430] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 61.148784] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.160525] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.170995] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 61.179555] team0: Port device team_slave_1 added [ 61.217180] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.227847] team0: Port device team_slave_0 added [ 61.259082] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 61.270970] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.284467] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.293626] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.301370] team0: Port device team_slave_0 added [ 61.317755] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 61.327581] team0: Port device team_slave_1 added [ 61.335850] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 61.354038] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.368799] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.381801] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 61.390600] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 61.397933] team0: Port device team_slave_1 added [ 61.408758] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.418639] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.430802] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 61.439852] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.447241] team0: Port device team_slave_0 added [ 61.453747] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.462238] team0: Port device team_slave_0 added [ 61.491189] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.502594] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.510943] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.521350] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.528478] team0: Port device team_slave_0 added [ 61.538733] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 61.548424] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 61.562598] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 61.575937] team0: Port device team_slave_1 added [ 61.586699] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.598594] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.612254] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.620982] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.628779] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.638505] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 61.646035] team0: Port device team_slave_1 added [ 61.664081] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 61.677645] team0: Port device team_slave_1 added [ 61.690677] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 61.701704] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.709340] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.718868] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.738397] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 61.761772] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.779095] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.787578] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.796227] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.820948] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.828754] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.855528] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.870765] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 61.884597] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.896752] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.912388] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 61.921328] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 61.930856] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.946359] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.954821] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.963206] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.988491] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.998906] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 62.010726] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.019600] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.039225] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 62.049787] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.061472] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.070472] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 62.077543] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.090567] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.129500] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 62.145361] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.157950] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.567302] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.573859] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.580894] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.587286] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.597139] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 62.669502] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.675927] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.682635] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.689004] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.705989] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 62.825713] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.832146] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.838805] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.845240] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.857671] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 62.866497] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.872903] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.879567] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.885992] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.899569] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 62.910338] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.916701] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.923397] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.929801] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.938532] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 63.023421] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.029854] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.036579] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.043033] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.052369] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 63.061598] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.069106] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.079666] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.091747] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.102785] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.110407] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.417660] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.665557] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 65.678562] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.822495] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.832685] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.878673] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 65.902342] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.910552] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.997130] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.029386] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.043224] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.091634] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.108243] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.182750] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.256824] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.277146] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.284779] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.308814] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.336838] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.354369] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.362960] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.377602] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.392014] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.399973] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.406994] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.598220] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.608151] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.619405] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.632868] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.643765] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.651134] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.658185] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.672348] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.721195] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.855331] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.920671] 8021q: adding VLAN 0 to HW filter on device team0 2018/11/07 00:48:44 executed programs: 6 2018/11/07 00:48:49 executed programs: 273 [ 76.256043] vivid-000: kernel_thread() failed [ 76.280821] ================================================================== [ 76.288399] BUG: KASAN: null-ptr-deref in kthread_stop+0x10d/0x900 [ 76.294736] Write of size 4 at addr 000000000000001c by task syz-executor2/8664 [ 76.302166] [ 76.303806] CPU: 0 PID: 8664 Comm: syz-executor2 Not tainted 4.20.0-rc1+ #101 [ 76.311076] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.311085] Call Trace: [ 76.311107] dump_stack+0x244/0x39d [ 76.311127] ? dump_stack_print_info.cold.1+0x20/0x20 [ 76.311146] ? vprintk_func+0x85/0x181 [ 76.311165] kasan_report.cold.8+0x6d/0x309 [ 76.311182] ? kthread_stop+0x10d/0x900 [ 76.311203] check_memory_region+0x13e/0x1b0 [ 76.332081] kasan_check_write+0x14/0x20 [ 76.332101] kthread_stop+0x10d/0x900 [ 76.332118] ? kthread_unpark+0x160/0x160 [ 76.332143] ? __lock_is_held+0xb5/0x140 [ 76.332178] vivid_stop_generating_vid_cap+0x2bb/0x9ae [ 76.370032] ? vivid_start_generating_vid_cap+0x4c0/0x4c0 [ 76.375596] ? _vb2_fop_release+0x3f/0x2b0 [ 76.379877] ? mutex_trylock+0x2b0/0x2b0 [ 76.383948] ? vivid_fop_release+0x66/0x440 [ 76.388270] ? __mutex_lock+0x85e/0x16f0 [ 76.392348] vid_cap_stop_streaming+0x8d/0xe0 [ 76.396860] ? vid_cap_buf_queue+0x310/0x310 [ 76.401284] __vb2_queue_cancel+0x171/0xd20 [ 76.405613] ? lock_downgrade+0x900/0x900 [ 76.409764] ? vb2_buffer_done+0xb90/0xb90 [ 76.414011] ? find_held_lock+0x36/0x1c0 [ 76.418094] ? mark_held_locks+0xc7/0x130 [ 76.422262] ? kasan_check_write+0x14/0x20 [ 76.426526] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 76.431483] ? kasan_check_read+0x11/0x20 [ 76.435656] ? wait_for_completion+0x8a0/0x8a0 [ 76.440230] ? trace_hardirqs_off_caller+0x310/0x310 [ 76.445336] ? vfs_lock_file+0xe0/0xe0 [ 76.449230] vb2_core_streamoff+0x60/0x140 [ 76.453453] __vb2_cleanup_fileio+0x73/0x160 [ 76.457862] vb2_core_queue_release+0x1e/0x80 [ 76.462347] _vb2_fop_release+0x1d2/0x2b0 [ 76.466490] vb2_fop_release+0x77/0xc0 [ 76.470371] vivid_fop_release+0x18e/0x440 [ 76.474599] ? vivid_remove+0x460/0x460 [ 76.478573] v4l2_release+0x224/0x3a0 [ 76.482361] ? dev_debug_store+0x140/0x140 [ 76.486586] __fput+0x385/0xa30 [ 76.489873] ? get_max_files+0x20/0x20 [ 76.493777] ? trace_hardirqs_on+0xbd/0x310 [ 76.498105] ? kasan_check_read+0x11/0x20 [ 76.502254] ? task_work_run+0x1af/0x2a0 [ 76.506304] ? trace_hardirqs_off_caller+0x310/0x310 [ 76.511406] ? filp_close+0x1cd/0x250 [ 76.515220] ____fput+0x15/0x20 [ 76.518505] task_work_run+0x1e8/0x2a0 [ 76.522387] ? task_work_cancel+0x240/0x240 [ 76.526703] ? copy_fd_bitmaps+0x210/0x210 [ 76.530962] ? do_syscall_64+0x9a/0x820 [ 76.534971] exit_to_usermode_loop+0x318/0x380 [ 76.539552] ? __bpf_trace_sys_exit+0x30/0x30 [ 76.544075] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.549629] do_syscall_64+0x6be/0x820 [ 76.553523] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 76.558876] ? syscall_return_slowpath+0x5e0/0x5e0 [ 76.563791] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 76.568623] ? trace_hardirqs_on_caller+0x310/0x310 [ 76.573639] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 76.578660] ? prepare_exit_to_usermode+0x291/0x3b0 [ 76.583669] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 76.588507] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.593680] RIP: 0033:0x411021 [ 76.596857] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 76.615744] RSP: 002b:00007ffee1331570 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 76.623446] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411021 [ 76.630727] RDX: 0000000000000000 RSI: 0000000000730188 RDI: 0000000000000003 [ 76.637984] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 76.645242] R10: 00007ffee1331490 R11: 0000000000000293 R12: 0000000000000000 [ 76.652507] R13: 0000000000000001 R14: 000000000000004a R15: 0000000000000002 [ 76.659794] ================================================================== [ 76.667145] Disabling lock debugging due to kernel taint [ 76.673401] Kernel panic - not syncing: panic_on_warn set ... [ 76.679316] CPU: 0 PID: 8664 Comm: syz-executor2 Tainted: G B 4.20.0-rc1+ #101 [ 76.687960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.697302] Call Trace: [ 76.699902] dump_stack+0x244/0x39d [ 76.703529] ? dump_stack_print_info.cold.1+0x20/0x20 [ 76.708724] panic+0x2ad/0x55c [ 76.711916] ? add_taint.cold.5+0x16/0x16 [ 76.716067] ? preempt_schedule+0x4d/0x60 [ 76.720200] ? ___preempt_schedule+0x16/0x18 [ 76.724596] ? trace_hardirqs_on+0xb4/0x310 [ 76.728903] kasan_end_report+0x47/0x4f [ 76.732868] kasan_report.cold.8+0x76/0x309 [ 76.737187] ? kthread_stop+0x10d/0x900 [ 76.741155] check_memory_region+0x13e/0x1b0 [ 76.745568] kasan_check_write+0x14/0x20 [ 76.749619] kthread_stop+0x10d/0x900 [ 76.753413] ? kthread_unpark+0x160/0x160 [ 76.757556] ? __lock_is_held+0xb5/0x140 [ 76.761634] vivid_stop_generating_vid_cap+0x2bb/0x9ae [ 76.766930] ? vivid_start_generating_vid_cap+0x4c0/0x4c0 [ 76.772496] ? _vb2_fop_release+0x3f/0x2b0 [ 76.776757] ? mutex_trylock+0x2b0/0x2b0 [ 76.780817] ? vivid_fop_release+0x66/0x440 [ 76.785135] ? __mutex_lock+0x85e/0x16f0 [ 76.789195] vid_cap_stop_streaming+0x8d/0xe0 [ 76.793702] ? vid_cap_buf_queue+0x310/0x310 [ 76.798128] __vb2_queue_cancel+0x171/0xd20 [ 76.802451] ? lock_downgrade+0x900/0x900 [ 76.806595] ? vb2_buffer_done+0xb90/0xb90 [ 76.810817] ? find_held_lock+0x36/0x1c0 [ 76.814864] ? mark_held_locks+0xc7/0x130 [ 76.819008] ? kasan_check_write+0x14/0x20 [ 76.823232] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 76.828145] ? kasan_check_read+0x11/0x20 [ 76.832280] ? wait_for_completion+0x8a0/0x8a0 [ 76.836844] ? trace_hardirqs_off_caller+0x310/0x310 [ 76.841932] ? vfs_lock_file+0xe0/0xe0 [ 76.845804] vb2_core_streamoff+0x60/0x140 [ 76.850024] __vb2_cleanup_fileio+0x73/0x160 [ 76.854419] vb2_core_queue_release+0x1e/0x80 [ 76.858901] _vb2_fop_release+0x1d2/0x2b0 [ 76.863037] vb2_fop_release+0x77/0xc0 [ 76.866913] vivid_fop_release+0x18e/0x440 [ 76.871131] ? vivid_remove+0x460/0x460 [ 76.875096] v4l2_release+0x224/0x3a0 [ 76.878892] ? dev_debug_store+0x140/0x140 [ 76.883113] __fput+0x385/0xa30 [ 76.886379] ? get_max_files+0x20/0x20 [ 76.890265] ? trace_hardirqs_on+0xbd/0x310 [ 76.894579] ? kasan_check_read+0x11/0x20 [ 76.898710] ? task_work_run+0x1af/0x2a0 [ 76.902762] ? trace_hardirqs_off_caller+0x310/0x310 [ 76.907848] ? filp_close+0x1cd/0x250 [ 76.911635] ____fput+0x15/0x20 [ 76.914916] task_work_run+0x1e8/0x2a0 [ 76.918788] ? task_work_cancel+0x240/0x240 [ 76.923097] ? copy_fd_bitmaps+0x210/0x210 [ 76.927326] ? do_syscall_64+0x9a/0x820 [ 76.931298] exit_to_usermode_loop+0x318/0x380 [ 76.935882] ? __bpf_trace_sys_exit+0x30/0x30 [ 76.940366] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.945890] do_syscall_64+0x6be/0x820 [ 76.949772] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 76.955140] ? syscall_return_slowpath+0x5e0/0x5e0 [ 76.960068] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 76.964896] ? trace_hardirqs_on_caller+0x310/0x310 [ 76.969911] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 76.974915] ? prepare_exit_to_usermode+0x291/0x3b0 [ 76.979916] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 76.984748] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.989920] RIP: 0033:0x411021 [ 76.993108] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 77.012002] RSP: 002b:00007ffee1331570 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 77.019701] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411021 [ 77.026972] RDX: 0000000000000000 RSI: 0000000000730188 RDI: 0000000000000003 [ 77.034227] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 77.041486] R10: 00007ffee1331490 R11: 0000000000000293 R12: 0000000000000000 [ 77.048742] R13: 0000000000000001 R14: 000000000000004a R15: 0000000000000002 [ 77.056937] Kernel Offset: disabled [ 77.060562] Rebooting in 86400 seconds..