[info] Using makefile-style concurrent boot in runlevel 2. [ 26.945532] audit: type=1800 audit(1544476597.511:21): pid=5881 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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 '10.128.0.6' (ECDSA) to the list of known hosts. 2018/12/10 21:30:00 parsed 1 programs 2018/12/10 21:30:02 executed programs: 0 syzkaller login: [ 831.662287] IPVS: ftp: loaded support on port[0] = 21 [ 831.926233] bridge0: port 1(bridge_slave_0) entered blocking state [ 831.933509] bridge0: port 1(bridge_slave_0) entered disabled state [ 831.941210] device bridge_slave_0 entered promiscuous mode [ 831.960387] bridge0: port 2(bridge_slave_1) entered blocking state [ 831.966807] bridge0: port 2(bridge_slave_1) entered disabled state [ 831.974003] device bridge_slave_1 entered promiscuous mode [ 831.992226] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 832.011771] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 832.063519] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 832.084345] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 832.163943] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 832.171441] team0: Port device team_slave_0 added [ 832.188216] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 832.195600] team0: Port device team_slave_1 added [ 832.213735] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 832.235766] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 832.255118] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 832.275393] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 832.418463] bridge0: port 2(bridge_slave_1) entered blocking state [ 832.424921] bridge0: port 2(bridge_slave_1) entered forwarding state [ 832.431910] bridge0: port 1(bridge_slave_0) entered blocking state [ 832.438276] bridge0: port 1(bridge_slave_0) entered forwarding state [ 832.966237] 8021q: adding VLAN 0 to HW filter on device bond0 [ 833.018495] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 833.073166] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 833.080242] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 833.087358] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 833.141203] 8021q: adding VLAN 0 to HW filter on device team0 [ 986.879376] INFO: task syz-executor0:6314 blocked for more than 140 seconds. [ 986.886808] Not tainted 4.20.0-rc6+ #370 [ 986.892760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 986.901010] syz-executor0 D21448 6314 6054 0x00000004 [ 986.906714] Call Trace: [ 986.915324] __schedule+0x8cf/0x21d0 [ 986.919069] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 986.924197] ? __sched_text_start+0x8/0x8 [ 986.928363] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 986.933466] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 986.938989] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 986.944038] ? zap_class+0x640/0x640 [ 986.947799] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 986.952910] ? find_held_lock+0x36/0x1c0 [ 986.956992] schedule+0xfe/0x460 [ 986.960690] ? __mutex_lock+0xafa/0x16f0 [ 986.964770] ? __schedule+0x21d0/0x21d0 [ 986.968794] ? kasan_check_read+0x11/0x20 [ 986.973303] ? do_raw_spin_unlock+0xa7/0x330 [ 986.977727] ? do_raw_spin_trylock+0x270/0x270 [ 986.982629] ? ww_mutex_lock.part.8+0xf0/0xf0 [ 986.987144] ? mutex_destroy+0x200/0x200 [ 986.991535] schedule_preempt_disabled+0x13/0x20 [ 986.996306] __mutex_lock+0xaff/0x16f0 [ 987.000547] ? ctrl_getfamily+0x313/0x420 [ 987.004721] ? mutex_trylock+0x2b0/0x2b0 [ 987.008793] ? find_held_lock+0x36/0x1c0 [ 987.013231] ? zap_class+0x640/0x640 [ 987.016980] ? find_held_lock+0x36/0x1c0 [ 987.022324] ? lock_acquire+0x1ed/0x520 [ 987.026315] ? ctrl_getfamily+0x305/0x420 [ 987.030803] ? lock_release+0xa00/0xa00 [ 987.034799] ? mutex_trylock+0x2b0/0x2b0 [ 987.038881] ? down_read+0x8d/0x120 [ 987.042881] ? ctrl_getfamily+0x305/0x420 [ 987.047045] ? __down_interruptible+0x700/0x700 [ 987.052104] ? __nla_parse+0x12c/0x3e0 [ 987.056012] mutex_lock_nested+0x16/0x20 [ 987.060405] ? mutex_lock_nested+0x16/0x20 [ 987.064662] ctrl_getfamily+0x313/0x420 [ 987.068651] genl_family_rcv_msg+0x8a7/0x11a0 [ 987.073501] ? genl_unregister_family+0x8a0/0x8a0 [ 987.078361] ? lock_downgrade+0x900/0x900 [ 987.082900] ? check_preemption_disabled+0x48/0x280 [ 987.087961] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 987.093231] ? kasan_check_read+0x11/0x20 [ 987.097396] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 987.102992] ? rcu_softirq_qs+0x20/0x20 [ 987.107024] genl_rcv_msg+0xc6/0x168 [ 987.111143] netlink_rcv_skb+0x172/0x440 [ 987.115234] ? genl_family_rcv_msg+0x11a0/0x11a0 [ 987.120428] ? netlink_ack+0xb80/0xb80 [ 987.124329] ? down_read+0x8d/0x120 [ 987.127975] genl_rcv+0x28/0x40 [ 987.131580] netlink_unicast+0x5a5/0x760 [ 987.135665] ? netlink_attachskb+0x9a0/0x9a0 [ 987.140543] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 987.146103] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 987.152456] netlink_sendmsg+0xa18/0xfc0 [ 987.156545] ? netlink_unicast+0x760/0x760 [ 987.161191] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 987.166141] ? apparmor_socket_sendmsg+0x29/0x30 [ 987.171345] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 987.176947] ? security_socket_sendmsg+0x94/0xc0 [ 987.182035] ? netlink_unicast+0x760/0x760 [ 987.186355] sock_sendmsg+0xd5/0x120 [ 987.190401] ___sys_sendmsg+0x7fd/0x930 [ 987.194394] ? find_held_lock+0x36/0x1c0 [ 987.198471] ? copy_msghdr_from_user+0x580/0x580 [ 987.203593] ? __fd_install+0x2b5/0x8f0 [ 987.207593] ? check_preemption_disabled+0x48/0x280 [ 987.212937] ? __fget_light+0x2e9/0x430 [ 987.216929] ? fget_raw+0x20/0x20 [ 987.220759] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 987.226318] ? __fd_install+0x2f9/0x8f0 [ 987.230616] ? get_unused_fd_flags+0x1a0/0x1a0 [ 987.235232] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 987.241090] ? sockfd_lookup_light+0xc5/0x160 [ 987.245607] __sys_sendmsg+0x11d/0x280 [ 987.249834] ? __ia32_sys_shutdown+0x80/0x80 [ 987.254271] ? do_syscall_64+0x9a/0x820 [ 987.258255] ? do_syscall_64+0x9a/0x820 [ 987.262569] ? trace_hardirqs_off_caller+0x310/0x310 [ 987.267695] __x64_sys_sendmsg+0x78/0xb0 [ 987.272098] do_syscall_64+0x1b9/0x820 [ 987.276038] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 987.282674] ? syscall_return_slowpath+0x5e0/0x5e0 [ 987.287615] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 987.292790] ? trace_hardirqs_on_caller+0x310/0x310 [ 987.297830] ? prepare_exit_to_usermode+0x291/0x3b0 [ 987.303177] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 987.308040] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 987.313535] RIP: 0033:0x411231 [ 987.316758] Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 [ 987.336009] RSP: 002b:00007fc4f0d7f9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e [ 987.344020] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 [ 987.351712] RDX: 0000000000000000 RSI: 00007fc4f0d7fa00 RDI: 0000000000000006 [ 987.358996] RBP: 0000000000000006 R08: 00007fc4f0d7f9d0 R09: 000000000072bf00 [ 987.366573] R10: 0000000000000005 R11: 0000000000000293 R12: 00007fc4f0d7fa40 [ 987.374174] R13: 00000000004cc470 R14: 00000000004d9950 R15: 00000000ffffffff [ 987.381772] [ 987.381772] Showing all locks held in the system: [ 987.388122] 1 lock held by khungtaskd/1019: [ 987.392852] #0: 0000000018acca81 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 [ 987.401824] 1 lock held by rsyslogd/5919: [ 987.405978] #0: 00000000a301519f (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 [ 987.415295] 2 locks held by getty/6010: [ 987.419602] #0: 000000008d1ae09f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 987.427865] #1: 000000001356f661 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 987.437075] 2 locks held by getty/6011: [ 987.441407] #0: 00000000c1ee7f5a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 987.449956] #1: 0000000053bcc6b4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 987.458823] 2 locks held by getty/6012: [ 987.463145] #0: 000000003937906c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 987.471725] #1: 000000005503206b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 987.480888] 2 locks held by getty/6013: [ 987.484864] #0: 00000000e7a22898 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 987.493418] #1: 00000000a0e9cef1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 987.502583] 2 locks held by getty/6014: [ 987.506564] #0: 000000002666d591 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 987.515338] #1: 00000000a02c8c57 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 987.524954] 2 locks held by getty/6015: [ 987.528933] #0: 00000000bc3e2096 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 987.537509] #1: 00000000c9a713a6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 987.547657] 2 locks held by getty/6016: [ 987.551932] #0: 00000000076cf5e3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 987.560483] #1: 00000000dd03af83 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 987.569657] 2 locks held by syz-executor0/6314: [ 987.574326] #0: 00000000cf395c86 (cb_lock){++++}, at: ctrl_getfamily+0x305/0x420 [ 987.582284] #1: 000000004b0549ce (genl_mutex){+.+.}, at: ctrl_getfamily+0x313/0x420 [ 987.590492] 3 locks held by syz-executor0/6317: [ 987.595232] [ 987.596864] ============================================= [ 987.596864] [ 987.604242] NMI backtrace for cpu 0 [ 987.607890] CPU: 0 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc6+ #370 [ 987.614900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 987.624251] Call Trace: [ 987.626923] dump_stack+0x244/0x39d [ 987.630577] ? dump_stack_print_info.cold.1+0x20/0x20 [ 987.635827] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 987.641376] nmi_cpu_backtrace.cold.2+0x5c/0xa1 [ 987.646109] ? lapic_can_unplug_cpu.cold.27+0x3f/0x3f [ 987.651310] nmi_trigger_cpumask_backtrace+0x1e8/0x22a [ 987.656596] arch_trigger_cpumask_backtrace+0x14/0x20 [ 987.661790] watchdog+0xb51/0x1060 [ 987.665347] ? hungtask_pm_notify+0xb0/0xb0 [ 987.669716] ? __kthread_parkme+0xce/0x1a0 [ 987.673975] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 987.679089] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 987.684199] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 987.688785] ? trace_hardirqs_on+0xbd/0x310 [ 987.693123] ? kasan_check_read+0x11/0x20 [ 987.697273] ? __kthread_parkme+0xce/0x1a0 [ 987.701517] ? trace_hardirqs_off_caller+0x310/0x310 [ 987.706646] ? trace_hardirqs_off_caller+0x310/0x310 [ 987.711767] ? lockdep_init_map+0x9/0x10 [ 987.715838] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 987.720944] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 987.726491] ? __kthread_parkme+0xfb/0x1a0 [ 987.730734] ? hungtask_pm_notify+0xb0/0xb0 [ 987.735059] kthread+0x35a/0x440 [ 987.738441] ? kthread_stop+0x900/0x900 [ 987.742419] ret_from_fork+0x3a/0x50 [ 987.746254] Sending NMI from CPU 0 to CPUs 1: [ 987.752807] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.855 msecs [ 987.752811] NMI backtrace for cpu 1 [ 987.752822] CPU: 1 PID: 6317 Comm: syz-executor0 Not tainted 4.20.0-rc6+ #370 [ 987.752829] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 987.752834] RIP: 0010:rcu_dynticks_curr_cpu_in_eqs+0x4e/0x170 [ 987.752846] Code: 48 c1 eb 03 48 83 ec 68 48 c7 45 80 b3 8a b5 41 4a 8d 04 33 48 c7 45 88 80 96 11 89 48 c7 45 90 90 6a 6a 81 c7 00 f1 f1 f1 f1 40 04 04 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d8 31 c0 [ 987.752851] RSP: 0018:ffff8881bab0e810 EFLAGS: 00000282 [ 987.752860] RAX: ffffed1037561d03 RBX: 1ffff11037561d03 RCX: ffffffff87a2367c [ 987.752866] RDX: 0000000000000000 RSI: ffffffff87a2368a RDI: ffff8881bb77a8fc [ 987.752872] RBP: ffff8881bab0e898 R08: ffff8881bb77a080 R09: ffffed103b5e5b5f [ 987.752878] R10: ffffed103b5e5b5f R11: ffff8881daf2dafb R12: 000000000002da40 [ 987.752885] R13: ffff8881bab0e878 R14: dffffc0000000000 R15: ffff8881b6cc9b80 [ 987.752892] FS: 00007fc4f0d5f700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 987.752897] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 987.752903] CR2: ffffffffff600400 CR3: 00000001b318c000 CR4: 00000000001406e0 [ 987.752910] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 987.752916] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 987.752919] Call Trace: [ 987.752924] ? rcu_softirq_qs+0x20/0x20 [ 987.752928] rcu_is_watching+0x10/0x30 [ 987.752932] rcu_read_lock_held+0x87/0xc0 [ 987.752936] tipc_sk_lookup+0xa4f/0xff0 [ 987.752941] ? trace_hardirqs_on_caller+0xc0/0x310 [ 987.752946] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 987.752950] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 987.752954] ? tipc_connect+0x820/0x820 [ 987.752959] ? validate_nla+0x29a/0x1650 [ 987.752963] ? nla_memcmp+0x90/0x90 [ 987.752967] ? zap_class+0x640/0x640 [ 987.752971] ? retint_kernel+0x2d/0x2d [ 987.752976] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 987.752980] ? __nla_parse+0x12c/0x3e0 [ 987.752985] ? nla_parse+0x46/0x60 [ 987.752989] tipc_nl_publ_dump+0x22d/0xf93 [ 987.752993] ? tipc_nl_sk_dump+0x30/0x30 [ 987.752998] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 987.753003] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 987.753007] ? retint_kernel+0x2d/0x2d [ 987.753012] ? trace_hardirqs_on_caller+0xc0/0x310 [ 987.753017] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 987.753022] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 987.753027] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 987.753032] ? trace_hardirqs_on+0x310/0x310 [ 987.753036] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 987.753041] ? __tipc_nl_compat_dumpit.isra.11+0x641/0xb60 [ 987.753047] __tipc_nl_compat_dumpit.isra.11+0x25d/0xb60 [ 987.753051] ? __alloc_skb+0x4c6/0x770 [ 987.753056] ? __tipc_add_link_prop.isra.9+0x2d0/0x2d0 [ 987.753060] ? skb_put+0x17b/0x1e0 [ 987.753065] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 987.753069] ? skb_put+0x17b/0x1e0 [ 987.753073] ? nla_put+0x117/0x150 [ 987.753087] tipc_nl_compat_sk_dump+0x88e/0xc50 [ 987.753093] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 987.753097] ? rcu_softirq_qs+0x20/0x20 [ 987.753102] ? zap_class+0x640/0x640 [ 987.753107] ? rhashtable_walk_next+0x2a9/0x6c0 [ 987.753111] ? tipc_nl_sk_dump+0x30/0x30 [ 987.753115] ? tipc_tlv_sprintf+0x2e0/0x2e0 [ 987.753120] ? rhashtable_walk_stop+0x1ca/0x450 [ 987.753125] ? release_sock+0x1ec/0x2c0 [ 987.753130] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 987.753135] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 987.753140] __tipc_nl_compat_dumpit.isra.11+0x389/0xb60 [ 987.753144] ? __alloc_skb+0x4c6/0x770 [ 987.753149] ? __tipc_add_link_prop.isra.9+0x2d0/0x2d0 [ 987.753153] ? lock_release+0xa00/0xa00 [ 987.753159] ? perf_trace_sched_process_exec+0x860/0x860 [ 987.753164] ? check_preemption_disabled+0x48/0x280 [ 987.753169] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 987.753173] ? skb_put+0x17b/0x1e0 [ 987.753177] tipc_nl_compat_dumpit+0x1f4/0x440 [ 987.753182] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 987.753187] tipc_nl_compat_recv+0x12b3/0x19a0 [ 987.753191] ? tipc_nl_compat_doit+0x650/0x650 [ 987.753195] ? tipc_dump_start+0x90/0x90 [ 987.753201] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 987.753205] ? find_held_lock+0x36/0x1c0 [ 987.753210] genl_family_rcv_msg+0x8a7/0x11a0 [ 987.753214] ? genl_unregister_family+0x8a0/0x8a0 [ 987.753219] ? lock_downgrade+0x900/0x900 [ 987.753223] ? check_preemption_disabled+0x48/0x280 [ 987.753228] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 987.753233] ? kasan_check_read+0x11/0x20 [ 987.753238] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 987.753242] ? rcu_softirq_qs+0x20/0x20 [ 987.753246] genl_rcv_msg+0xc6/0x168 [ 987.753251] netlink_rcv_skb+0x172/0x440 [ 987.753256] ? genl_family_rcv_msg+0x11a0/0x11a0 [ 987.753260] ? netlink_ack+0xb80/0xb80 [ 987.753264] ? down_read+0x8d/0x120 [ 987.753268] genl_rcv+0x28/0x40 [ 987.753272] netlink_unicast+0x5a5/0x760 [ 987.753277] ? netlink_attachskb+0x9a0/0x9a0 [ 987.753282] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 987.753287] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 987.753291] netlink_sendmsg+0xa18/0xfc0 [ 987.753296] ? netlink_unicast+0x760/0x760 [ 987.753301] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 987.753306] ? apparmor_socket_sendmsg+0x29/0x30 [ 987.753311] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 987.753316] ? security_socket_sendmsg+0x94/0xc0 [ 987.753320] ? netlink_unicast+0x760/0x760 [ 987.753324] sock_sendmsg+0xd5/0x120 [ 987.753329] ___sys_sendmsg+0x7fd/0x930 [ 987.753333] ? copy_msghdr_from_user+0x580/0x580 [ 987.753338] ? __fget_light+0x2e9/0x430 [ 987.753342] ? fget_raw+0x20/0x20 [ 987.753346] ? __might_fault+0x12b/0x1e0 [ 987.753351] ? lock_downgrade+0x900/0x900 [ 987.753355] ? lock_release+0xa00/0xa00 [ 987.753360] ? perf_trace_sched_process_exec+0x860/0x860 [ 987.753364] ? posix_ktime_get_ts+0x15/0x20 [ 987.753369] ? trace_hardirqs_off_caller+0x310/0x310 [ 987.753374] ? trace_hardirqs_on+0xbd/0x310 [ 987.753378] ? kasan_check_read+0x11/0x20 [ 987.753383] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 987.753388] ? sockfd_lookup_light+0xc5/0x160 [ 987.753392] __sys_sendmsg+0x11d/0x280 [ 987.753396] ? __ia32_sys_shutdown+0x80/0x80 [ 987.753401] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 987.753406] ? put_timespec64+0x10f/0x1b0 [ 987.753410] ? do_syscall_64+0x9a/0x820 [ 987.753414] ? do_syscall_64+0x9a/0x820 [ 987.753419] ? trace_hardirqs_off_caller+0x310/0x310 [ 987.753424] __x64_sys_sendmsg+0x78/0xb0 [ 987.753428] do_syscall_64+0x1b9/0x820 [ 987.753433] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 987.753438] ? syscall_return_slowpath+0x5e0/0x5e0 [ 987.753443] ? trace_hardirqs_on_caller+0x310/0x310 [ 987.753448] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 987.753453] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 987.753458] ? __switch_to_asm+0x40/0x70 [ 987.753462] ? __switch_to_asm+0x34/0x70 [ 987.753467] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 987.753472] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 987.753476] RIP: 0033:0x457659 [ 987.753489] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 987.753494] RSP: 002b:00007fc4f0d5ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 987.753504] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457659 [ 987.753511] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000005 [ 987.753517] RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 [ 987.753523] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc4f0d5f6d4 [ 987.753529] R13: 00000000004c4171 R14: 00000000004d7058 R15: 00000000ffffffff [ 987.761390] Kernel panic - not syncing: hung_task: blocked tasks [ 988.488634] CPU: 0 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc6+ #370 [ 988.495660] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 988.505010] Call Trace: [ 988.507606] dump_stack+0x244/0x39d [ 988.511249] ? dump_stack_print_info.cold.1+0x20/0x20 [ 988.516516] panic+0x2ad/0x55c [ 988.519734] ? add_taint.cold.5+0x16/0x16 [ 988.523891] ? nmi_trigger_cpumask_backtrace+0x1c8/0x22a [ 988.529350] ? nmi_trigger_cpumask_backtrace+0x1f9/0x22a [ 988.534804] ? nmi_trigger_cpumask_backtrace+0x1d1/0x22a [ 988.540256] ? nmi_trigger_cpumask_backtrace+0x1c8/0x22a [ 988.545720] watchdog+0xb62/0x1060 [ 988.549277] ? hungtask_pm_notify+0xb0/0xb0 [ 988.553608] ? __kthread_parkme+0xce/0x1a0 [ 988.557849] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 988.562972] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 988.568115] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 988.572709] ? trace_hardirqs_on+0xbd/0x310 [ 988.577034] ? kasan_check_read+0x11/0x20 [ 988.581188] ? __kthread_parkme+0xce/0x1a0 [ 988.585428] ? trace_hardirqs_off_caller+0x310/0x310 [ 988.590542] ? trace_hardirqs_off_caller+0x310/0x310 [ 988.595650] ? lockdep_init_map+0x9/0x10 [ 988.599723] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 988.604830] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 988.610377] ? __kthread_parkme+0xfb/0x1a0 [ 988.614619] ? hungtask_pm_notify+0xb0/0xb0 [ 988.618948] kthread+0x35a/0x440 [ 988.622321] ? kthread_stop+0x900/0x900 [ 988.626301] ret_from_fork+0x3a/0x50 [ 988.631226] Kernel Offset: disabled [ 988.634868] Rebooting in 86400 seconds..