[info] Using makefile-style concurrent boot in runlevel 2. [ 24.567668] audit: type=1800 audit(1541543338.504:21): pid=5498 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.600422] audit: type=1800 audit(1541543338.504:22): pid=5498 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 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 syzkaller login: [ 33.211460] sshd (5638) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.4' (ECDSA) to the list of known hosts. 2018/11/06 22:29:17 parsed 1 programs 2018/11/06 22:29:19 executed programs: 0 [ 45.485524] IPVS: ftp: loaded support on port[0] = 21 [ 45.487481] IPVS: ftp: loaded support on port[0] = 21 [ 45.498349] IPVS: ftp: loaded support on port[0] = 21 [ 45.499069] IPVS: ftp: loaded support on port[0] = 21 [ 45.509168] IPVS: ftp: loaded support on port[0] = 21 [ 45.511094] IPVS: ftp: loaded support on port[0] = 21 [ 46.437428] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.448552] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.456734] device bridge_slave_0 entered promiscuous mode [ 46.483120] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.491126] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.498735] device bridge_slave_0 entered promiscuous mode [ 46.519688] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.526589] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.535174] device bridge_slave_1 entered promiscuous mode [ 46.552920] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.559294] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.580015] device bridge_slave_0 entered promiscuous mode [ 46.597355] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.605457] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.614001] device bridge_slave_1 entered promiscuous mode [ 46.622231] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.628959] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.637555] device bridge_slave_0 entered promiscuous mode [ 46.646727] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.656267] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.663837] device bridge_slave_0 entered promiscuous mode [ 46.671054] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 46.684063] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 46.691217] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.707825] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.722221] device bridge_slave_0 entered promiscuous mode [ 46.730253] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.738227] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.745967] device bridge_slave_1 entered promiscuous mode [ 46.754185] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 46.765562] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.771920] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.780532] device bridge_slave_1 entered promiscuous mode [ 46.790389] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.803635] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.810745] device bridge_slave_1 entered promiscuous mode [ 46.818049] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.824872] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.832188] device bridge_slave_1 entered promiscuous mode [ 46.840692] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 46.852330] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 46.860855] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 46.876104] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 46.884401] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 46.894818] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 46.915398] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 46.936624] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 46.955689] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 47.001783] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 47.090716] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 47.121933] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 47.131886] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 47.143200] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 47.154470] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 47.173070] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 47.179979] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 47.197897] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 47.223548] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 47.234582] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 47.260174] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 47.271520] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 47.285792] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 47.301244] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 47.319916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 47.329558] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 47.344452] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 47.355499] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 47.362872] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 47.370675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 47.379458] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 47.388972] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 47.407505] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 47.420337] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 47.431742] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 47.441750] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 47.465803] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 47.473883] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 47.481437] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 47.491163] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 47.511588] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 47.521489] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 47.537910] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 47.552409] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 47.562884] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 47.616006] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 47.627813] team0: Port device team_slave_0 added [ 47.645449] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 47.654212] team0: Port device team_slave_0 added [ 47.695598] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 47.720269] team0: Port device team_slave_1 added [ 47.728894] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 47.741961] team0: Port device team_slave_0 added [ 47.750369] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 47.759354] team0: Port device team_slave_1 added [ 47.771596] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 47.781363] team0: Port device team_slave_0 added [ 47.792247] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 47.810318] team0: Port device team_slave_1 added [ 47.816991] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 47.826911] team0: Port device team_slave_0 added [ 47.832859] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.856021] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 47.878247] team0: Port device team_slave_1 added [ 47.888066] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.899186] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 47.908314] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 47.915772] team0: Port device team_slave_0 added [ 47.926186] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 47.940153] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 47.952435] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 47.960984] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 47.969304] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 47.980747] team0: Port device team_slave_1 added [ 47.993369] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 48.002421] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 48.018467] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 48.028767] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 48.037874] team0: Port device team_slave_1 added [ 48.047406] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 48.064601] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.078296] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 48.087439] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 48.095587] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.103683] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 48.114087] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 48.121987] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 48.132169] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 48.146111] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 48.157407] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 48.173251] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 48.183555] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 48.191165] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.205853] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 48.217201] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 48.224982] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 48.232399] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 48.240125] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 48.249708] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 48.260991] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 48.276931] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 48.290081] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 48.300540] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.310921] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 48.329096] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.338132] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 48.351026] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 48.358998] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 48.366535] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.374268] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 48.384961] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 48.395267] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 48.409664] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 48.419737] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.435753] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 48.445315] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.454211] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 48.467454] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.475267] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 48.483720] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 48.495581] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.514154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 48.557458] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 48.571637] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.583646] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 49.008977] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.015507] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.022526] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.028954] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.045155] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 49.059656] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.066044] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.072710] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.079060] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.097749] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 49.123429] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 49.130910] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 49.212135] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.218586] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.225309] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.231674] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.239958] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 49.247728] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.254128] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.260848] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.267358] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.275256] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 49.284395] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.290750] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.297374] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.303763] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.312108] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 49.443521] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.449918] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.456622] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.463028] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.474153] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 50.133239] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 50.140412] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 50.159462] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 50.174154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 51.679291] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.785451] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.830978] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.926433] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.935351] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 51.945343] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.074155] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.085744] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.145367] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.161203] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.169320] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 52.189230] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 52.203226] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.291269] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.326355] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 52.333397] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 52.339575] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 52.348530] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.368695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 52.376149] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.445760] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 52.455812] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.466355] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 52.481193] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.502130] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.557503] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.589970] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 52.605367] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 52.612494] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.648548] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.730435] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.829443] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 52.845791] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 52.854078] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.878957] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.063387] 8021q: adding VLAN 0 to HW filter on device team0 2018/11/06 22:29:28 executed programs: 6 [ 55.560438] vivid-000: kernel_thread() failed [ 55.583522] ================================================================== [ 55.591057] BUG: KASAN: null-ptr-deref in kthread_stop+0x10d/0x900 [ 55.597385] Write of size 4 at addr 000000000000001c by task syz-executor5/7466 [ 55.604827] [ 55.606465] CPU: 1 PID: 7466 Comm: syz-executor5 Not tainted 4.20.0-rc1+ #101 [ 55.613727] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.623081] Call Trace: [ 55.625685] dump_stack+0x244/0x39d [ 55.629307] ? dump_stack_print_info.cold.1+0x20/0x20 [ 55.634504] ? vprintk_func+0x85/0x181 [ 55.638410] kasan_report.cold.8+0x6d/0x309 [ 55.642742] ? kthread_stop+0x10d/0x900 [ 55.646719] check_memory_region+0x13e/0x1b0 [ 55.651165] kasan_check_write+0x14/0x20 [ 55.655230] kthread_stop+0x10d/0x900 [ 55.659027] ? kthread_unpark+0x160/0x160 [ 55.663193] ? __lock_is_held+0xb5/0x140 [ 55.667255] vivid_stop_generating_vid_cap+0x2bb/0x9ae [ 55.672520] ? vivid_start_generating_vid_cap+0x4c0/0x4c0 [ 55.678046] ? _vb2_fop_release+0x3f/0x2b0 [ 55.682279] ? mutex_trylock+0x2b0/0x2b0 [ 55.686336] ? vivid_fop_release+0x66/0x440 [ 55.690657] ? __mutex_lock+0x85e/0x16f0 [ 55.694716] vid_cap_stop_streaming+0x8d/0xe0 [ 55.699201] ? vid_cap_buf_queue+0x310/0x310 [ 55.703604] __vb2_queue_cancel+0x171/0xd20 [ 55.707915] ? lock_downgrade+0x900/0x900 [ 55.712157] ? vb2_buffer_done+0xb90/0xb90 [ 55.716387] ? find_held_lock+0x36/0x1c0 [ 55.720439] ? mark_held_locks+0xc7/0x130 [ 55.724591] ? kasan_check_write+0x14/0x20 [ 55.728824] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 55.733753] ? kasan_check_read+0x11/0x20 [ 55.737909] ? wait_for_completion+0x8a0/0x8a0 [ 55.742497] ? trace_hardirqs_off_caller+0x310/0x310 [ 55.747592] ? vfs_lock_file+0xe0/0xe0 [ 55.751469] vb2_core_streamoff+0x60/0x140 [ 55.755707] __vb2_cleanup_fileio+0x73/0x160 [ 55.760134] vb2_core_queue_release+0x1e/0x80 [ 55.764651] _vb2_fop_release+0x1d2/0x2b0 [ 55.768798] vb2_fop_release+0x77/0xc0 [ 55.772690] vivid_fop_release+0x18e/0x440 [ 55.776928] ? vivid_remove+0x460/0x460 [ 55.780904] v4l2_release+0x224/0x3a0 [ 55.784705] ? dev_debug_store+0x140/0x140 [ 55.788947] __fput+0x385/0xa30 [ 55.792219] ? get_max_files+0x20/0x20 [ 55.796103] ? trace_hardirqs_on+0xbd/0x310 [ 55.800417] ? kasan_check_read+0x11/0x20 [ 55.804556] ? task_work_run+0x1af/0x2a0 [ 55.808603] ? trace_hardirqs_off_caller+0x310/0x310 [ 55.813704] ? filp_close+0x1cd/0x250 [ 55.817507] ____fput+0x15/0x20 [ 55.820773] task_work_run+0x1e8/0x2a0 [ 55.824665] ? task_work_cancel+0x240/0x240 [ 55.829001] ? copy_fd_bitmaps+0x210/0x210 [ 55.833230] ? do_syscall_64+0x9a/0x820 [ 55.837193] exit_to_usermode_loop+0x318/0x380 [ 55.841768] ? __bpf_trace_sys_exit+0x30/0x30 [ 55.846257] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.851781] do_syscall_64+0x6be/0x820 [ 55.855661] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 55.861016] ? syscall_return_slowpath+0x5e0/0x5e0 [ 55.865936] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.870778] ? trace_hardirqs_on_caller+0x310/0x310 [ 55.875792] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 55.880797] ? prepare_exit_to_usermode+0x291/0x3b0 [ 55.885803] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.890643] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.895845] RIP: 0033:0x411021 [ 55.899036] 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 [ 55.917922] RSP: 002b:00007fff2ba13bc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 55.925632] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411021 [ 55.932889] RDX: 0000000000000000 RSI: 0000000000730188 RDI: 0000000000000003 [ 55.940156] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 55.947419] R10: 00007fff2ba13ae0 R11: 0000000000000293 R12: 0000000000000000 [ 55.954679] R13: 0000000000000001 R14: 000000000000000b R15: 0000000000000005 [ 55.961962] ================================================================== [ 55.969317] Disabling lock debugging due to kernel taint [ 55.975370] Kernel panic - not syncing: panic_on_warn set ... [ 55.981278] CPU: 0 PID: 7466 Comm: syz-executor5 Tainted: G B 4.20.0-rc1+ #101 [ 55.989976] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.999315] Call Trace: [ 56.001895] dump_stack+0x244/0x39d [ 56.005513] ? dump_stack_print_info.cold.1+0x20/0x20 [ 56.010692] panic+0x2ad/0x55c [ 56.013866] ? add_taint.cold.5+0x16/0x16 [ 56.018000] ? preempt_schedule+0x4d/0x60 [ 56.022132] ? ___preempt_schedule+0x16/0x18 [ 56.026537] ? trace_hardirqs_on+0xb4/0x310 [ 56.030850] kasan_end_report+0x47/0x4f [ 56.034819] kasan_report.cold.8+0x76/0x309 [ 56.039224] ? kthread_stop+0x10d/0x900 [ 56.043204] check_memory_region+0x13e/0x1b0 [ 56.047599] kasan_check_write+0x14/0x20 [ 56.051662] kthread_stop+0x10d/0x900 [ 56.055448] ? kthread_unpark+0x160/0x160 [ 56.059583] ? __lock_is_held+0xb5/0x140 [ 56.063648] vivid_stop_generating_vid_cap+0x2bb/0x9ae [ 56.068919] ? vivid_start_generating_vid_cap+0x4c0/0x4c0 [ 56.074449] ? _vb2_fop_release+0x3f/0x2b0 [ 56.078673] ? mutex_trylock+0x2b0/0x2b0 [ 56.082718] ? vivid_fop_release+0x66/0x440 [ 56.087024] ? __mutex_lock+0x85e/0x16f0 [ 56.091076] vid_cap_stop_streaming+0x8d/0xe0 [ 56.095554] ? vid_cap_buf_queue+0x310/0x310 [ 56.099946] __vb2_queue_cancel+0x171/0xd20 [ 56.104254] ? lock_downgrade+0x900/0x900 [ 56.108384] ? vb2_buffer_done+0xb90/0xb90 [ 56.112622] ? find_held_lock+0x36/0x1c0 [ 56.116682] ? mark_held_locks+0xc7/0x130 [ 56.120813] ? kasan_check_write+0x14/0x20 [ 56.125033] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 56.129962] ? kasan_check_read+0x11/0x20 [ 56.134111] ? wait_for_completion+0x8a0/0x8a0 [ 56.138687] ? trace_hardirqs_off_caller+0x310/0x310 [ 56.143781] ? vfs_lock_file+0xe0/0xe0 [ 56.147669] vb2_core_streamoff+0x60/0x140 [ 56.151889] __vb2_cleanup_fileio+0x73/0x160 [ 56.156280] vb2_core_queue_release+0x1e/0x80 [ 56.160857] _vb2_fop_release+0x1d2/0x2b0 [ 56.164987] vb2_fop_release+0x77/0xc0 [ 56.168874] vivid_fop_release+0x18e/0x440 [ 56.173101] ? vivid_remove+0x460/0x460 [ 56.177057] v4l2_release+0x224/0x3a0 [ 56.180846] ? dev_debug_store+0x140/0x140 [ 56.185074] __fput+0x385/0xa30 [ 56.188341] ? get_max_files+0x20/0x20 [ 56.192211] ? trace_hardirqs_on+0xbd/0x310 [ 56.196524] ? kasan_check_read+0x11/0x20 [ 56.200657] ? task_work_run+0x1af/0x2a0 [ 56.204705] ? trace_hardirqs_off_caller+0x310/0x310 [ 56.209798] ? filp_close+0x1cd/0x250 [ 56.213583] ____fput+0x15/0x20 [ 56.216869] task_work_run+0x1e8/0x2a0 [ 56.220748] ? task_work_cancel+0x240/0x240 [ 56.225051] ? copy_fd_bitmaps+0x210/0x210 [ 56.229270] ? do_syscall_64+0x9a/0x820 [ 56.233229] exit_to_usermode_loop+0x318/0x380 [ 56.238666] ? __bpf_trace_sys_exit+0x30/0x30 [ 56.243149] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.248669] do_syscall_64+0x6be/0x820 [ 56.252541] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 56.257886] ? syscall_return_slowpath+0x5e0/0x5e0 [ 56.262816] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.267646] ? trace_hardirqs_on_caller+0x310/0x310 [ 56.272650] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 56.277653] ? prepare_exit_to_usermode+0x291/0x3b0 [ 56.282654] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.287492] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.292666] RIP: 0033:0x411021 [ 56.295844] 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 [ 56.314733] RSP: 002b:00007fff2ba13bc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 56.322426] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411021 [ 56.329687] RDX: 0000000000000000 RSI: 0000000000730188 RDI: 0000000000000003 [ 56.336959] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 56.344337] R10: 00007fff2ba13ae0 R11: 0000000000000293 R12: 0000000000000000 [ 56.351596] R13: 0000000000000001 R14: 000000000000000b R15: 0000000000000005 [ 56.360035] Kernel Offset: disabled [ 56.363656] Rebooting in 86400 seconds..