[ 37.252167] audit: type=1800 audit(1539292393.880:22): pid=5904 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [ 37.278537] audit: type=1800 audit(1539292393.880:23): pid=5904 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rsyslog" dev="sda1" ino=2442 res=0 [ 37.314110] audit: type=1800 audit(1539292393.880:24): pid=5904 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="sudo" dev="sda1" ino=2454 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 '10.128.0.49' (ECDSA) to the list of known hosts. 2018/10/11 21:25:46 parsed 1 programs 2018/10/11 21:25:48 executed programs: 0 syzkaller login: [ 791.560636] IPVS: ftp: loaded support on port[0] = 21 [ 791.592045] IPVS: ftp: loaded support on port[0] = 21 [ 791.603069] IPVS: ftp: loaded support on port[0] = 21 [ 791.612241] IPVS: ftp: loaded support on port[0] = 21 [ 791.628967] IPVS: ftp: loaded support on port[0] = 21 [ 791.642582] IPVS: ftp: loaded support on port[0] = 21 [ 792.160166] bridge0: port 1(bridge_slave_0) entered blocking state [ 792.166656] bridge0: port 1(bridge_slave_0) entered disabled state [ 792.177129] device bridge_slave_0 entered promiscuous mode [ 792.215255] bridge0: port 2(bridge_slave_1) entered blocking state [ 792.222602] bridge0: port 2(bridge_slave_1) entered disabled state [ 792.229992] device bridge_slave_1 entered promiscuous mode [ 792.243426] bridge0: port 1(bridge_slave_0) entered blocking state [ 792.250616] bridge0: port 1(bridge_slave_0) entered disabled state [ 792.257526] device bridge_slave_0 entered promiscuous mode [ 792.269737] bridge0: port 1(bridge_slave_0) entered blocking state [ 792.276077] bridge0: port 1(bridge_slave_0) entered disabled state [ 792.286882] device bridge_slave_0 entered promiscuous mode [ 792.294222] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 792.311380] bridge0: port 1(bridge_slave_0) entered blocking state [ 792.320780] bridge0: port 1(bridge_slave_0) entered disabled state [ 792.330048] device bridge_slave_0 entered promiscuous mode [ 792.337363] bridge0: port 2(bridge_slave_1) entered blocking state [ 792.343689] bridge0: port 2(bridge_slave_1) entered disabled state [ 792.351315] device bridge_slave_1 entered promiscuous mode [ 792.358434] bridge0: port 2(bridge_slave_1) entered blocking state [ 792.364780] bridge0: port 2(bridge_slave_1) entered disabled state [ 792.371894] device bridge_slave_1 entered promiscuous mode [ 792.379490] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 792.386546] bridge0: port 1(bridge_slave_0) entered blocking state [ 792.393868] bridge0: port 1(bridge_slave_0) entered disabled state [ 792.400899] device bridge_slave_0 entered promiscuous mode [ 792.412297] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 792.424518] bridge0: port 2(bridge_slave_1) entered blocking state [ 792.434138] bridge0: port 2(bridge_slave_1) entered disabled state [ 792.441448] device bridge_slave_1 entered promiscuous mode [ 792.448445] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 792.456307] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 792.465083] bridge0: port 2(bridge_slave_1) entered blocking state [ 792.472724] bridge0: port 2(bridge_slave_1) entered disabled state [ 792.482388] device bridge_slave_1 entered promiscuous mode [ 792.492921] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 792.501647] bridge0: port 1(bridge_slave_0) entered blocking state [ 792.509082] bridge0: port 1(bridge_slave_0) entered disabled state [ 792.515846] device bridge_slave_0 entered promiscuous mode [ 792.523131] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 792.531518] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 792.539071] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 792.548696] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 792.563900] bridge0: port 2(bridge_slave_1) entered blocking state [ 792.571439] bridge0: port 2(bridge_slave_1) entered disabled state [ 792.581203] device bridge_slave_1 entered promiscuous mode [ 792.588349] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 792.608531] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 792.647841] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 792.672228] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 792.683597] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 792.693926] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 792.707171] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 792.716901] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 792.725087] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 792.748626] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 792.763811] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 792.776853] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 792.823946] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 792.853900] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 792.869000] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 792.876018] team0: Port device team_slave_0 added [ 792.938442] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 792.945600] team0: Port device team_slave_0 added [ 792.951615] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 792.958924] team0: Port device team_slave_0 added [ 792.964388] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 792.971645] team0: Port device team_slave_1 added [ 792.978301] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 792.985432] team0: Port device team_slave_0 added [ 792.992508] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 792.999973] team0: Port device team_slave_0 added [ 793.012073] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 793.020663] team0: Port device team_slave_1 added [ 793.027095] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 793.035134] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 793.042501] team0: Port device team_slave_0 added [ 793.050140] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 793.057377] team0: Port device team_slave_1 added [ 793.062786] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 793.070841] team0: Port device team_slave_1 added [ 793.075787] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 793.083561] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 793.093398] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 793.101732] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 793.109206] team0: Port device team_slave_1 added [ 793.115087] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 793.122832] team0: Port device team_slave_1 added [ 793.129055] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 793.138214] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 793.146498] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 793.154359] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 793.162864] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 793.171677] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 793.179719] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 793.187761] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 793.197476] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 793.205132] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 793.214182] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 793.223166] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 793.231838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 793.253637] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 793.261309] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 793.269098] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 793.276519] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 793.284266] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 793.291776] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 793.299362] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 793.309290] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 793.316247] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 793.326367] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 793.336114] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 793.348011] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 793.355765] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 793.373770] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 793.381900] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 793.389989] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 793.397799] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 793.405138] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 793.412920] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 793.420637] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 793.428382] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 793.435789] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 793.444082] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 793.454446] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 793.464735] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 793.476254] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 793.483678] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 793.494138] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 793.502556] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 793.510734] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 793.518566] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 793.526091] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 793.534022] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 793.542841] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 793.553091] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 793.563292] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 793.573798] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 793.582452] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 793.590711] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 793.598746] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 793.606373] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 793.614934] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 793.629470] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 793.636818] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 793.644656] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 793.654395] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 793.664547] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 793.673983] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 793.688525] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 793.701312] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 793.710042] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 793.723552] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 793.731803] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 794.199295] bridge0: port 2(bridge_slave_1) entered blocking state [ 794.205685] bridge0: port 2(bridge_slave_1) entered forwarding state [ 794.212346] bridge0: port 1(bridge_slave_0) entered blocking state [ 794.218721] bridge0: port 1(bridge_slave_0) entered forwarding state [ 794.237513] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 794.245855] bridge0: port 2(bridge_slave_1) entered blocking state [ 794.252260] bridge0: port 2(bridge_slave_1) entered forwarding state [ 794.258930] bridge0: port 1(bridge_slave_0) entered blocking state [ 794.265302] bridge0: port 1(bridge_slave_0) entered forwarding state [ 794.273069] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 794.279509] bridge0: port 2(bridge_slave_1) entered blocking state [ 794.285871] bridge0: port 2(bridge_slave_1) entered forwarding state [ 794.292533] bridge0: port 1(bridge_slave_0) entered blocking state [ 794.298906] bridge0: port 1(bridge_slave_0) entered forwarding state [ 794.306780] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 794.314885] bridge0: port 2(bridge_slave_1) entered blocking state [ 794.321268] bridge0: port 2(bridge_slave_1) entered forwarding state [ 794.327977] bridge0: port 1(bridge_slave_0) entered blocking state [ 794.334329] bridge0: port 1(bridge_slave_0) entered forwarding state [ 794.342248] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 794.393737] bridge0: port 2(bridge_slave_1) entered blocking state [ 794.400145] bridge0: port 2(bridge_slave_1) entered forwarding state [ 794.406810] bridge0: port 1(bridge_slave_0) entered blocking state [ 794.413172] bridge0: port 1(bridge_slave_0) entered forwarding state [ 794.421414] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 794.438041] bridge0: port 2(bridge_slave_1) entered blocking state [ 794.444417] bridge0: port 2(bridge_slave_1) entered forwarding state [ 794.451088] bridge0: port 1(bridge_slave_0) entered blocking state [ 794.457483] bridge0: port 1(bridge_slave_0) entered forwarding state [ 794.472168] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 795.092114] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 795.103727] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 795.124694] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 795.132160] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 795.139310] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 795.146238] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 796.341071] 8021q: adding VLAN 0 to HW filter on device bond0 [ 796.402158] 8021q: adding VLAN 0 to HW filter on device bond0 [ 796.413329] 8021q: adding VLAN 0 to HW filter on device bond0 [ 796.520358] 8021q: adding VLAN 0 to HW filter on device bond0 [ 796.531033] 8021q: adding VLAN 0 to HW filter on device bond0 [ 796.550375] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 796.588087] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 796.632557] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 796.708389] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 796.740221] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 796.755618] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 796.769588] 8021q: adding VLAN 0 to HW filter on device bond0 [ 796.775681] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 796.797086] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 796.834538] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 796.844825] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 796.854087] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 796.865998] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 796.895560] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 796.905702] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 796.929062] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 796.941536] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 796.949395] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 796.998346] 8021q: adding VLAN 0 to HW filter on device team0 [ 797.010217] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 797.017452] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 797.028677] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 797.044605] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 797.094369] 8021q: adding VLAN 0 to HW filter on device team0 [ 797.117872] 8021q: adding VLAN 0 to HW filter on device team0 [ 797.162273] 8021q: adding VLAN 0 to HW filter on device team0 [ 797.221973] 8021q: adding VLAN 0 to HW filter on device team0 [ 797.253542] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 797.267073] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 797.274048] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 797.422297] 8021q: adding VLAN 0 to HW filter on device team0 2018/10/11 21:25:55 executed programs: 6 2018/10/11 21:26:00 executed programs: 31 2018/10/11 21:26:05 executed programs: 53 2018/10/11 21:26:10 executed programs: 77 [ 956.846961] INFO: task syz-executor1:8204 blocked for more than 140 seconds. [ 956.854310] Not tainted 4.19.0-rc7-next-20181011+ #92 [ 956.860090] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 956.868085] syz-executor1 D22688 8204 6078 0x00000004 [ 956.873825] Call Trace: [ 956.876487] __schedule+0x8cf/0x21d0 [ 956.880253] ? __sched_text_start+0x8/0x8 [ 956.884422] ? mark_held_locks+0x130/0x130 [ 956.888709] ? schedule+0x108/0x460 [ 956.892385] ? bpf_prog_kallsyms_find+0xde/0x4a0 [ 956.897182] schedule+0xfe/0x460 [ 956.900622] ? __mutex_lock+0xafa/0x16f0 [ 956.904677] ? __schedule+0x21d0/0x21d0 [ 956.908716] ? kasan_check_read+0x11/0x20 [ 956.912890] ? do_raw_spin_unlock+0xa7/0x2f0 [ 956.917383] ? do_raw_spin_trylock+0x270/0x270 [ 956.921964] ? __ww_mutex_add_waiter.part.15+0x120/0x120 [ 956.927509] ? mutex_destroy+0x200/0x200 [ 956.931580] schedule_preempt_disabled+0x13/0x20 [ 956.936436] __mutex_lock+0xaff/0x16f0 [ 956.940454] ? evdev_release+0xfe/0x1e0 [ 956.944435] ? mutex_trylock+0x2b0/0x2b0 [ 956.948648] ? save_stack+0xa9/0xd0 [ 956.952270] ? kasan_slab_free+0xe/0x10 [ 956.956530] ? kfree+0xcf/0x230 [ 956.959926] ? kvfree+0x61/0x70 [ 956.963222] ? evdev_release+0xf3/0x1e0 [ 956.967278] ? __fput+0x3bc/0xa70 [ 956.970758] ? ____fput+0x15/0x20 [ 956.974234] ? task_work_run+0x1e8/0x2a0 [ 956.978384] ? exit_to_usermode_loop+0x318/0x380 [ 956.983165] ? do_syscall_64+0x6be/0x820 [ 956.987289] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 956.992693] ? trace_hardirqs_off+0xb8/0x310 [ 956.997164] ? do_raw_spin_unlock+0xa7/0x2f0 [ 957.001579] ? trace_hardirqs_on+0x310/0x310 [ 957.006047] ? synchronize_rcu_expedited+0xa0/0xa0 [ 957.011086] ? lock_downgrade+0x900/0x900 [ 957.015247] ? kfree_call_rcu+0x10/0x10 [ 957.019324] ? trace_hardirqs_off+0xb8/0x310 [ 957.023753] ? trace_hardirqs_on+0x310/0x310 [ 957.028292] ? debug_check_no_obj_freed+0x305/0x58d [ 957.033377] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 957.038966] ? check_preemption_disabled+0x48/0x200 [ 957.043989] ? trace_hardirqs_on+0xbd/0x310 [ 957.048349] ? kvfree+0x61/0x70 [ 957.051685] ? trace_hardirqs_off_caller+0x300/0x300 [ 957.056847] ? __kasan_slab_free+0x119/0x150 [ 957.061263] ? kvfree+0x61/0x70 [ 957.064535] mutex_lock_nested+0x16/0x20 [ 957.068699] ? mutex_lock_nested+0x16/0x20 [ 957.073053] evdev_release+0xfe/0x1e0 [ 957.076970] __fput+0x3bc/0xa70 [ 957.080644] ? evdev_detach_client+0x290/0x290 [ 957.085466] ? get_max_files+0x20/0x20 [ 957.089397] ? trace_hardirqs_on+0xbd/0x310 [ 957.093723] ? kasan_check_read+0x11/0x20 [ 957.097913] ? task_work_run+0x1af/0x2a0 [ 957.101986] ? trace_hardirqs_off_caller+0x300/0x300 [ 957.107190] ? filp_close+0x1cd/0x250 [ 957.111041] ____fput+0x15/0x20 [ 957.114315] task_work_run+0x1e8/0x2a0 [ 957.118263] ? task_work_cancel+0x240/0x240 [ 957.122650] ? copy_fd_bitmaps+0x210/0x210 [ 957.126935] exit_to_usermode_loop+0x318/0x380 [ 957.131570] ? __bpf_trace_sys_exit+0x30/0x30 [ 957.136104] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 957.141709] do_syscall_64+0x6be/0x820 [ 957.145603] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 957.151008] ? syscall_return_slowpath+0x5e0/0x5e0 [ 957.155943] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 957.160830] ? trace_hardirqs_on_caller+0x310/0x310 [ 957.165858] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 957.170935] ? prepare_exit_to_usermode+0x291/0x3b0 [ 957.176004] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 957.180908] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 957.186107] RIP: 0033:0x410ff1 [ 957.189342] Code: 30 48 89 4c 24 10 e8 8e 09 00 00 48 8b 44 24 28 48 89 04 24 48 8b 44 24 30 48 89 44 24 08 e8 36 5d 04 00 48 8b 6c 24 18 48 83 20 c3 cc cc cc cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff [ 957.208298] RSP: 002b:00007ffe1d2c04e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 957.216010] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000410ff1 [ 957.223393] RDX: 0000000000000000 RSI: 00000000007304e8 RDI: 0000000000000006 [ 957.230706] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 957.238025] R10: 00007ffe1d2c0400 R11: 0000000000000293 R12: 0000000000000000 [ 957.245301] R13: 0000000000000001 R14: 000000000000000d R15: 0000000000000001 [ 957.252627] INFO: task syz-executor4:8209 blocked for more than 140 seconds. [ 957.259841] Not tainted 4.19.0-rc7-next-20181011+ #92 [ 957.265540] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 957.273561] syz-executor4 D23552 8209 6089 0x00000004 [ 957.279245] Call Trace: [ 957.281855] __schedule+0x8cf/0x21d0 [ 957.285577] ? __sched_text_start+0x8/0x8 [ 957.289790] ? mark_held_locks+0x130/0x130 [ 957.294032] ? schedule+0x108/0x460 [ 957.297722] ? bpf_prog_kallsyms_find+0xde/0x4a0 [ 957.302543] schedule+0xfe/0x460 [ 957.305924] ? __mutex_lock+0xafa/0x16f0 [ 957.310042] ? __schedule+0x21d0/0x21d0 [ 957.314023] ? kasan_check_read+0x11/0x20 [ 957.318219] ? do_raw_spin_unlock+0xa7/0x2f0 [ 957.322632] ? do_raw_spin_trylock+0x270/0x270 [ 957.327259] ? __ww_mutex_add_waiter.part.15+0x120/0x120 [ 957.332779] ? mutex_destroy+0x200/0x200 [ 957.336907] schedule_preempt_disabled+0x13/0x20 [ 957.341670] __mutex_lock+0xaff/0x16f0 [ 957.345555] ? evdev_release+0xfe/0x1e0 [ 957.349640] ? mutex_trylock+0x2b0/0x2b0 [ 957.353718] ? save_stack+0xa9/0xd0 [ 957.357382] ? kasan_slab_free+0xe/0x10 [ 957.361363] ? kfree+0xcf/0x230 [ 957.364634] ? kvfree+0x61/0x70 [ 957.367963] ? evdev_release+0xf3/0x1e0 [ 957.371933] ? __fput+0x3bc/0xa70 [ 957.375371] ? ____fput+0x15/0x20 [ 957.378870] ? task_work_run+0x1e8/0x2a0 [ 957.382937] ? exit_to_usermode_loop+0x318/0x380 [ 957.387745] ? do_syscall_64+0x6be/0x820 [ 957.391812] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 957.397221] ? trace_hardirqs_off+0xb8/0x310 [ 957.401639] ? do_raw_spin_unlock+0xa7/0x2f0 [ 957.406040] ? trace_hardirqs_on+0x310/0x310 [ 957.410516] ? synchronize_rcu_expedited+0xa0/0xa0 [ 957.415459] ? lock_downgrade+0x900/0x900 [ 957.419692] ? kfree_call_rcu+0x10/0x10 [ 957.423674] ? trace_hardirqs_off+0xb8/0x310 [ 957.428182] ? trace_hardirqs_on+0x310/0x310 [ 957.432601] ? debug_check_no_obj_freed+0x305/0x58d [ 957.437713] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 957.443262] ? check_preemption_disabled+0x48/0x200 [ 957.448339] ? trace_hardirqs_on+0xbd/0x310 [ 957.452667] ? kvfree+0x61/0x70 [ 957.455989] ? trace_hardirqs_off_caller+0x300/0x300 [ 957.461168] ? __kasan_slab_free+0x119/0x150 [ 957.465581] ? kvfree+0x61/0x70 [ 957.468908] mutex_lock_nested+0x16/0x20 [ 957.472975] ? mutex_lock_nested+0x16/0x20 [ 957.477332] evdev_release+0xfe/0x1e0 [ 957.481159] __fput+0x3bc/0xa70 [ 957.484447] ? evdev_detach_client+0x290/0x290 [ 957.489097] ? get_max_files+0x20/0x20 [ 957.492997] ? trace_hardirqs_on+0xbd/0x310 [ 957.497387] ? kasan_check_read+0x11/0x20 [ 957.501542] ? task_work_run+0x1af/0x2a0 [ 957.505592] ? trace_hardirqs_off_caller+0x300/0x300 [ 957.510745] ? filp_close+0x1cd/0x250 [ 957.514551] ____fput+0x15/0x20 [ 957.517860] task_work_run+0x1e8/0x2a0 [ 957.521770] ? task_work_cancel+0x240/0x240 [ 957.526082] ? copy_fd_bitmaps+0x210/0x210 [ 957.530374] exit_to_usermode_loop+0x318/0x380 [ 957.534964] ? __bpf_trace_sys_exit+0x30/0x30 [ 957.539521] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 957.545069] do_syscall_64+0x6be/0x820 [ 957.548996] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 957.554372] ? syscall_return_slowpath+0x5e0/0x5e0 [ 957.559340] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 957.564195] ? trace_hardirqs_on_caller+0x310/0x310 [ 957.569332] ? prepare_exit_to_usermode+0x291/0x3b0 [ 957.574374] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 957.579255] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 957.584446] RIP: 0033:0x410ff1 [ 957.587672] Code: 30 48 89 4c 24 10 e8 8e 09 00 00 48 8b 44 24 28 48 89 04 24 48 8b 44 24 30 48 89 44 24 08 e8 36 5d 04 00 48 8b 6c 24 18 48 83 20 c3 cc cc cc cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff [ 957.606617] RSP: 002b:00007ffc172d4cf0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 957.614379] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000410ff1 [ 957.621757] RDX: 0000000000000000 RSI: 00000000007304e8 RDI: 0000000000000006 [ 957.629082] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 957.636362] R10: 00007ffc172d4c10 R11: 0000000000000293 R12: 0000000000000000 [ 957.643690] R13: 0000000000000001 R14: 000000000000000a R15: 0000000000000004 [ 957.651013] INFO: task syz-executor5:8247 blocked for more than 140 seconds. [ 957.658246] Not tainted 4.19.0-rc7-next-20181011+ #92 [ 957.663957] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 957.672016] syz-executor5 D23584 8247 6083 0x00000006 [ 957.677679] Call Trace: [ 957.680261] __schedule+0x8cf/0x21d0 [ 957.683975] ? __switch_to_asm+0x34/0x70 [ 957.688101] ? __sched_text_start+0x8/0x8 [ 957.692310] ? schedule+0x108/0x460 [ 957.695939] ? bpf_prog_kallsyms_find+0xde/0x4a0 [ 957.700758] schedule+0xfe/0x460 [ 957.704138] ? __mutex_lock+0xafa/0x16f0 [ 957.708292] ? __schedule+0x21d0/0x21d0 [ 957.712283] ? kasan_check_read+0x11/0x20 [ 957.716429] ? do_raw_spin_unlock+0xa7/0x2f0 [ 957.720892] ? do_raw_spin_trylock+0x270/0x270 [ 957.725484] ? __ww_mutex_add_waiter.part.15+0x120/0x120 [ 957.730966] ? mutex_destroy+0x200/0x200 [ 957.735042] schedule_preempt_disabled+0x13/0x20 [ 957.739894] __mutex_lock+0xaff/0x16f0 [ 957.743795] ? evdev_release+0xfe/0x1e0 [ 957.747807] ? mutex_trylock+0x2b0/0x2b0 [ 957.751876] ? save_stack+0xa9/0xd0 [ 957.755492] ? kasan_slab_free+0xe/0x10 [ 957.759514] ? kfree+0xcf/0x230 [ 957.762799] ? kvfree+0x61/0x70 [ 957.766176] ? evdev_release+0xf3/0x1e0 [ 957.770200] ? __fput+0x3bc/0xa70 [ 957.773665] ? ____fput+0x15/0x20 [ 957.777151] ? task_work_run+0x1e8/0x2a0 [ 957.781263] ? get_signal+0x1550/0x1970 [ 957.785260] ? do_signal+0x9c/0x21c0 [ 957.789015] ? exit_to_usermode_loop+0x2e5/0x380 [ 957.793773] ? do_syscall_64+0x6be/0x820 [ 957.797958] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 957.803332] ? trace_hardirqs_off+0xb8/0x310 [ 957.807781] ? do_raw_spin_unlock+0xa7/0x2f0 [ 957.812199] ? trace_hardirqs_on+0x310/0x310 [ 957.816601] ? synchronize_rcu_expedited+0xa0/0xa0 [ 957.821637] ? lock_downgrade+0x900/0x900 [ 957.825793] ? kfree_call_rcu+0x10/0x10 [ 957.829807] ? trace_hardirqs_off+0xb8/0x310 [ 957.834463] ? trace_hardirqs_on+0x310/0x310 [ 957.838927] ? debug_check_no_obj_freed+0x305/0x58d [ 957.843953] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 957.849547] ? check_preemption_disabled+0x48/0x200 [ 957.854571] ? trace_hardirqs_on+0xbd/0x310 [ 957.858997] ? kvfree+0x61/0x70 [ 957.862287] ? trace_hardirqs_off_caller+0x300/0x300 [ 957.867422] ? __kasan_slab_free+0x119/0x150 [ 957.871838] ? kvfree+0x61/0x70 [ 957.875111] mutex_lock_nested+0x16/0x20 [ 957.879226] ? mutex_lock_nested+0x16/0x20 [ 957.883470] evdev_release+0xfe/0x1e0 [ 957.887460] __fput+0x3bc/0xa70 [ 957.890767] ? evdev_detach_client+0x290/0x290 [ 957.895342] ? get_max_files+0x20/0x20 [ 957.899280] ? trace_hardirqs_on+0xbd/0x310 [ 957.903646] ? kasan_check_read+0x11/0x20 [ 957.907842] ? task_work_run+0x1af/0x2a0 [ 957.911962] ? trace_hardirqs_off_caller+0x300/0x300 [ 957.917132] ? __mutex_unlock_slowpath+0x430/0x8c0 [ 957.922072] ? lock_downgrade+0x900/0x900 [ 957.926213] ____fput+0x15/0x20 [ 957.929542] task_work_run+0x1e8/0x2a0 [ 957.933470] ? task_work_cancel+0x240/0x240 [ 957.937837] ? kasan_check_write+0x14/0x20 [ 957.942301] get_signal+0x1550/0x1970 [ 957.946102] ? wait_for_completion+0x8a0/0x8a0 [ 957.950798] ? ptrace_notify+0x130/0x130 [ 957.954887] ? ksys_dup3+0x680/0x680 [ 957.958720] do_signal+0x9c/0x21c0 [ 957.962267] ? evdev_ioctl+0x27/0x30 [ 957.965973] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 957.971632] ? do_vfs_ioctl+0x201/0x1720 [ 957.975704] ? setup_sigcontext+0x7d0/0x7d0 [ 957.980060] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 957.985623] ? check_preemption_disabled+0x48/0x200 [ 957.990763] ? kick_process+0xed/0x170 [ 957.994732] ? trace_hardirqs_on+0xbd/0x310 [ 957.999116] ? task_work_add+0x123/0x1e0 [ 958.003184] ? do_syscall_64+0x6be/0x820 [ 958.007284] ? trace_hardirqs_off_caller+0x300/0x300 [ 958.012399] ? cpumask_weight.constprop.5+0x3f/0x3f [ 958.017496] exit_to_usermode_loop+0x2e5/0x380 [ 958.022088] ? __bpf_trace_sys_exit+0x30/0x30 [ 958.026572] ? ksys_ioctl+0x81/0xd0 [ 958.030254] do_syscall_64+0x6be/0x820 [ 958.034143] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 958.039608] ? syscall_return_slowpath+0x5e0/0x5e0 [ 958.044592] ? trace_hardirqs_on_caller+0x310/0x310 [ 958.049753] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 958.054792] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 958.061504] ? __switch_to_asm+0x40/0x70 [ 958.065569] ? __switch_to_asm+0x34/0x70 [ 958.069671] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 958.074522] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 958.079748] RIP: 0033:0x457519 [ 958.082946] Code: 44 0f 7f 41 b0 f3 44 0f 7f 49 c0 f3 44 0f 7f 51 d0 f3 44 0f 7f 59 e0 f3 44 0f 7f 61 f0 c3 48 89 f8 f3 0f 6f 2e f3 0f 6f 76 10 <48> 01 df f3 0f 6f 7e 20 f3 44 0f 6f 46 30 4c 8d 57 e0 49 89 fb f3 [ 958.101919] RSP: 002b:00007f7291965c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 958.109675] RAX: ffffffffffffffea RBX: 0000000000000003 RCX: 0000000000457519 [ 958.116998] RDX: 0000000020013000 RSI: 000000008040450a RDI: 0000000000000004 [ 958.124467] RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 [ 958.131791] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f72919666d4 [ 958.139121] R13: 00000000004bf390 R14: 00000000004cf190 R15: 00000000ffffffff [ 958.146406] INFO: task syz-executor3:8240 blocked for more than 140 seconds. [ 958.153771] Not tainted 4.19.0-rc7-next-20181011+ #92 [ 958.159509] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 958.167501] syz-executor3 D23552 8240 6081 0x00000004 [ 958.173140] Call Trace: [ 958.175717] __schedule+0x8cf/0x21d0 [ 958.179471] ? __sched_text_start+0x8/0x8 [ 958.183625] ? trace_hardirqs_on+0xbd/0x310 [ 958.187988] ? kasan_check_read+0x11/0x20 [ 958.192142] ? __debug_object_init+0x57d/0x1290 [ 958.196845] ? trace_hardirqs_off_caller+0x300/0x300 [ 958.201950] ? do_raw_spin_trylock+0x270/0x270 [ 958.206522] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 958.211506] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 958.216616] ? __debug_object_init+0x57d/0x1290 [ 958.221333] schedule+0xfe/0x460 [ 958.224705] ? __mutex_lock+0xafa/0x16f0 [ 958.228823] ? __schedule+0x21d0/0x21d0 [ 958.233040] ? kasan_check_read+0x11/0x20 [ 958.237218] ? do_raw_spin_unlock+0xa7/0x2f0 [ 958.241635] ? do_raw_spin_trylock+0x270/0x270 [ 958.246203] ? __ww_mutex_add_waiter.part.15+0x120/0x120 [ 958.251703] ? mutex_destroy+0x200/0x200 [ 958.255775] schedule_preempt_disabled+0x13/0x20 [ 958.260567] __mutex_lock+0xaff/0x16f0 [ 958.264562] ? evdev_flush+0x74/0x150 [ 958.268402] ? mutex_trylock+0x2b0/0x2b0 [ 958.272474] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 958.278070] ? check_preemption_disabled+0x48/0x200 [ 958.283095] ? trace_hardirqs_on+0xbd/0x310 [ 958.287455] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 958.292739] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 958.298307] ? check_preemption_disabled+0x48/0x200 [ 958.303335] ? rcu_is_watching+0x30/0x30 [ 958.307504] ? kzfree+0x28/0x30 [ 958.310826] ? blkcg_maybe_throttle_current+0x5ae/0x1450 [ 958.316265] ? kzfree+0x28/0x30 [ 958.319582] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 958.325126] ? blkg_prfill_rwstat_field_recursive+0x170/0x170 [ 958.331047] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 958.336601] mutex_lock_nested+0x16/0x20 [ 958.340716] ? mutex_lock_nested+0x16/0x20 [ 958.345024] evdev_flush+0x74/0x150 [ 958.348732] ? evdev_poll+0x220/0x220 [ 958.352539] filp_close+0x154/0x250 [ 958.356152] ? file_path+0x30/0x30 [ 958.359750] __close_fd+0x245/0x3a0 [ 958.363383] ? copy_fd_bitmaps+0x210/0x210 [ 958.367643] ? trace_hardirqs_on+0xbd/0x310 [ 958.371970] ? exit_to_usermode_loop+0x1f4/0x380 [ 958.376760] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 958.382130] ? trace_hardirqs_off_caller+0x300/0x300 [ 958.387273] __x64_sys_close+0x72/0xf0 [ 958.391169] do_syscall_64+0x1b9/0x820 [ 958.395041] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 958.400467] ? syscall_return_slowpath+0x5e0/0x5e0 [ 958.405404] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 958.410376] ? trace_hardirqs_on_caller+0x310/0x310 [ 958.415412] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 958.420474] ? prepare_exit_to_usermode+0x291/0x3b0 [ 958.425501] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 958.430396] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 958.435579] RIP: 0033:0x410ff1 [ 958.438798] Code: 30 48 89 4c 24 10 e8 8e 09 00 00 48 8b 44 24 28 48 89 04 24 48 8b 44 24 30 48 89 44 24 08 e8 36 5d 04 00 48 8b 6c 24 18 48 83 20 c3 cc cc cc cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff [ 958.457784] RSP: 002b:00007fff71a8dae0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 958.465536] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000410ff1 [ 958.472869] RDX: 0000000000000000 RSI: 00000000007304e8 RDI: 0000000000000004 [ 958.480177] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 958.487493] R10: 00007fff71a8da00 R11: 0000000000000293 R12: 0000000000000000 [ 958.494766] R13: 0000000000000001 R14: 000000000000000d R15: 0000000000000003 [ 958.502088] INFO: lockdep is turned off. [ 958.506147] NMI backtrace for cpu 0 [ 958.509803] CPU: 0 PID: 980 Comm: khungtaskd Not tainted 4.19.0-rc7-next-20181011+ #92 [ 958.517858] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 958.527196] Call Trace: [ 958.529815] dump_stack+0x244/0x3ab [ 958.533433] ? dump_stack_print_info.cold.2+0x52/0x52 [ 958.538612] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 958.544142] nmi_cpu_backtrace.cold.2+0x5c/0xa1 [ 958.548935] ? lapic_can_unplug_cpu.cold.27+0x3f/0x3f [ 958.554123] nmi_trigger_cpumask_backtrace+0x1e8/0x22a [ 958.559450] arch_trigger_cpumask_backtrace+0x14/0x20 [ 958.564634] watchdog+0xb39/0x1050 [ 958.568164] ? reset_hung_task_detector+0xd0/0xd0 [ 958.572991] ? __kthread_parkme+0xce/0x1a0 [ 958.577223] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 958.582319] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 958.587467] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 958.592040] ? trace_hardirqs_on+0xbd/0x310 [ 958.596353] ? kasan_check_read+0x11/0x20 [ 958.600493] ? __kthread_parkme+0xce/0x1a0 [ 958.604715] ? trace_hardirqs_off_caller+0x300/0x300 [ 958.609807] ? trace_hardirqs_off_caller+0x300/0x300 [ 958.614947] ? lockdep_init_map+0x9/0x10 [ 958.619009] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 958.624100] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 958.629628] ? __kthread_parkme+0xfb/0x1a0 [ 958.633851] ? reset_hung_task_detector+0xd0/0xd0 [ 958.638681] kthread+0x35a/0x440 [ 958.642032] ? kthread_stop+0x8f0/0x8f0 [ 958.646038] ret_from_fork+0x3a/0x50 [ 958.649866] Sending NMI from CPU 0 to CPUs 1: [ 958.654420] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x6/0x10 [ 958.655661] Kernel panic - not syncing: hung_task: blocked tasks [ 958.668112] CPU: 0 PID: 980 Comm: khungtaskd Not tainted 4.19.0-rc7-next-20181011+ #92 [ 958.676147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 958.685484] Call Trace: [ 958.688066] dump_stack+0x244/0x3ab [ 958.691682] ? dump_stack_print_info.cold.2+0x52/0x52 [ 958.696907] panic+0x238/0x4e7 [ 958.700097] ? add_taint.cold.5+0x16/0x16 [ 958.704230] ? nmi_trigger_cpumask_backtrace+0x1c8/0x22a [ 958.709664] ? nmi_trigger_cpumask_backtrace+0x1f9/0x22a [ 958.715096] ? nmi_trigger_cpumask_backtrace+0x1d1/0x22a [ 958.720533] ? nmi_trigger_cpumask_backtrace+0x1c8/0x22a [ 958.725979] watchdog+0xb4a/0x1050 [ 958.729520] ? reset_hung_task_detector+0xd0/0xd0 [ 958.734364] ? __kthread_parkme+0xce/0x1a0 [ 958.738591] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 958.743730] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 958.748832] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 958.753474] ? trace_hardirqs_on+0xbd/0x310 [ 958.757801] ? kasan_check_read+0x11/0x20 [ 958.761997] ? __kthread_parkme+0xce/0x1a0 [ 958.766228] ? trace_hardirqs_off_caller+0x300/0x300 [ 958.771318] ? trace_hardirqs_off_caller+0x300/0x300 [ 958.776406] ? lockdep_init_map+0x9/0x10 [ 958.780457] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 958.785599] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 958.791129] ? __kthread_parkme+0xfb/0x1a0 [ 958.795349] ? reset_hung_task_detector+0xd0/0xd0 [ 958.800181] kthread+0x35a/0x440 [ 958.803632] ? kthread_stop+0x8f0/0x8f0 [ 958.807595] ret_from_fork+0x3a/0x50 [ 958.812242] Kernel Offset: disabled [ 958.815865] Rebooting in 86400 seconds..