[info] Using makefile-style concurrent boot in runlevel 2. [ 24.813355] audit: type=1800 audit(1544502736.697:21): pid=5829 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.839120] audit: type=1800 audit(1544502736.697:22): pid=5829 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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 Warning: Permanently added '10.128.0.142' (ECDSA) to the list of known hosts. 2018/12/11 04:41:04 parsed 1 programs 2018/12/11 04:41:06 executed programs: 0 syzkaller login: [ 554.451548] IPVS: ftp: loaded support on port[0] = 21 [ 554.692671] bridge0: port 1(bridge_slave_0) entered blocking state [ 554.700033] bridge0: port 1(bridge_slave_0) entered disabled state [ 554.707644] device bridge_slave_0 entered promiscuous mode [ 554.726801] bridge0: port 2(bridge_slave_1) entered blocking state [ 554.733292] bridge0: port 2(bridge_slave_1) entered disabled state [ 554.740429] device bridge_slave_1 entered promiscuous mode [ 554.758691] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 554.778256] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 554.827996] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 554.849678] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 554.924772] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 554.932429] team0: Port device team_slave_0 added [ 554.950313] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 554.957351] team0: Port device team_slave_1 added [ 554.974636] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 554.992932] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 555.011914] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 555.031771] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 555.175122] bridge0: port 2(bridge_slave_1) entered blocking state [ 555.181657] bridge0: port 2(bridge_slave_1) entered forwarding state [ 555.188780] bridge0: port 1(bridge_slave_0) entered blocking state [ 555.195605] bridge0: port 1(bridge_slave_0) entered forwarding state [ 555.693781] 8021q: adding VLAN 0 to HW filter on device bond0 [ 555.740837] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 555.788230] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 555.794876] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 555.802870] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 555.845002] 8021q: adding VLAN 0 to HW filter on device team0 [ 718.719159] INFO: task syz-executor0:6495 blocked for more than 140 seconds. [ 718.726669] Not tainted 4.20.0-rc6+ #371 [ 718.732691] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 718.740944] syz-executor0 D22440 6495 5997 0x00000004 [ 718.746653] Call Trace: [ 718.754942] __schedule+0x8cf/0x21d0 [ 718.758687] ? __sched_text_start+0x8/0x8 [ 718.763410] ? print_usage_bug+0xc0/0xc0 [ 718.767526] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 718.772409] ? zap_class+0x640/0x640 [ 718.776144] ? zap_class+0x640/0x640 [ 718.780276] ? trace_hardirqs_off_caller+0x310/0x310 [ 718.785386] ? zap_class+0x640/0x640 [ 718.789430] ? find_held_lock+0x36/0x1c0 [ 718.793508] schedule+0xfe/0x460 [ 718.796876] ? __mutex_lock+0xafa/0x16f0 [ 718.801280] ? __schedule+0x21d0/0x21d0 [ 718.805313] ? kasan_check_read+0x11/0x20 [ 718.809742] ? do_raw_spin_unlock+0xa7/0x330 [ 718.814245] ? do_raw_spin_trylock+0x270/0x270 [ 718.818833] ? ww_mutex_lock.part.8+0xf0/0xf0 [ 718.823671] ? mutex_destroy+0x200/0x200 [ 718.827748] schedule_preempt_disabled+0x13/0x20 [ 718.832783] __mutex_lock+0xaff/0x16f0 [ 718.836752] ? ctrl_getfamily+0x313/0x420 [ 718.841182] ? mutex_trylock+0x2b0/0x2b0 [ 718.845267] ? find_held_lock+0x36/0x1c0 [ 718.849669] ? zap_class+0x640/0x640 [ 718.853412] ? find_held_lock+0x36/0x1c0 [ 718.857489] ? lock_acquire+0x1ed/0x520 [ 718.862677] ? ctrl_getfamily+0x305/0x420 [ 718.866840] ? lock_release+0xa00/0xa00 [ 718.871089] ? mutex_trylock+0x2b0/0x2b0 [ 718.875233] ? down_read+0x8d/0x120 [ 718.878861] ? ctrl_getfamily+0x305/0x420 [ 718.883295] ? __down_interruptible+0x700/0x700 [ 718.888026] ? __nla_parse+0x12c/0x3e0 [ 718.892239] mutex_lock_nested+0x16/0x20 [ 718.896305] ? mutex_lock_nested+0x16/0x20 [ 718.900853] ctrl_getfamily+0x313/0x420 [ 718.904838] genl_family_rcv_msg+0x8a7/0x11a0 [ 718.909663] ? genl_unregister_family+0x8a0/0x8a0 [ 718.914515] ? lock_downgrade+0x900/0x900 [ 718.918732] ? check_preemption_disabled+0x48/0x280 [ 718.924074] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 718.929287] ? kasan_check_read+0x11/0x20 [ 718.933446] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 718.938742] ? rcu_softirq_qs+0x20/0x20 [ 718.943067] genl_rcv_msg+0xc6/0x168 [ 718.946793] netlink_rcv_skb+0x172/0x440 [ 718.951253] ? genl_family_rcv_msg+0x11a0/0x11a0 [ 718.956030] ? netlink_ack+0xb80/0xb80 [ 718.960253] ? down_read+0x8d/0x120 [ 718.964053] genl_rcv+0x28/0x40 [ 718.967393] netlink_unicast+0x5a5/0x760 [ 718.971763] ? netlink_attachskb+0x9a0/0x9a0 [ 718.976253] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 718.982155] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 718.987177] netlink_sendmsg+0xa18/0xfc0 [ 718.992320] ? netlink_unicast+0x760/0x760 [ 718.996626] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 719.001851] ? apparmor_socket_sendmsg+0x29/0x30 [ 719.006614] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 719.012612] ? security_socket_sendmsg+0x94/0xc0 [ 719.017379] ? netlink_unicast+0x760/0x760 [ 719.021954] sock_sendmsg+0xd5/0x120 [ 719.025677] ___sys_sendmsg+0x7fd/0x930 [ 719.029928] ? find_held_lock+0x36/0x1c0 [ 719.033999] ? copy_msghdr_from_user+0x580/0x580 [ 719.038796] ? __fd_install+0x2b5/0x8f0 [ 719.043084] ? check_preemption_disabled+0x48/0x280 [ 719.048117] ? __fget_light+0x2e9/0x430 [ 719.052354] ? fget_raw+0x20/0x20 [ 719.056743] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 719.063919] ? __fd_install+0x2f9/0x8f0 [ 719.068440] ? get_unused_fd_flags+0x1a0/0x1a0 [ 719.073517] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 719.079338] ? sockfd_lookup_light+0xc5/0x160 [ 719.083839] __sys_sendmsg+0x11d/0x280 [ 719.087729] ? __ia32_sys_shutdown+0x80/0x80 [ 719.092513] ? do_syscall_64+0x9a/0x820 [ 719.096496] ? do_syscall_64+0x9a/0x820 [ 719.100799] ? trace_hardirqs_off_caller+0x310/0x310 [ 719.105931] __x64_sys_sendmsg+0x78/0xb0 [ 719.110326] do_syscall_64+0x1b9/0x820 [ 719.114221] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 719.120800] ? syscall_return_slowpath+0x5e0/0x5e0 [ 719.125739] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 719.130916] ? trace_hardirqs_on_caller+0x310/0x310 [ 719.135964] ? prepare_exit_to_usermode+0x291/0x3b0 [ 719.141281] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 719.146137] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 719.151629] RIP: 0033:0x411231 [ 719.154832] 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 [ 719.174068] RSP: 002b:00007fc24a5559c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e [ 719.182069] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 [ 719.189722] RDX: 0000000000000000 RSI: 00007fc24a555a00 RDI: 0000000000000007 [ 719.196995] RBP: 0000000000000007 R08: 00007fc24a5559d0 R09: 000000000072bf00 [ 719.204545] R10: 0000000000000000 R11: 0000000000000293 R12: 00007fc24a555a40 [ 719.212063] R13: 00000000004cc498 R14: 00000000004d9968 R15: 00000000ffffffff [ 719.219604] [ 719.219604] Showing all locks held in the system: [ 719.226030] 1 lock held by khungtaskd/1019: [ 719.230756] #0: 00000000c41905bd (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 [ 719.239595] 1 lock held by rsyslogd/5867: [ 719.243725] #0: 00000000ed8a444b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 [ 719.252425] 2 locks held by getty/5957: [ 719.256382] #0: 00000000157c2e4a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 719.264792] #1: 0000000003962786 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 719.273859] 2 locks held by getty/5958: [ 719.277817] #0: 000000008b509a35 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 719.286230] #1: 00000000eb8b8ae9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 719.295250] 2 locks held by getty/5959: [ 719.299356] #0: 0000000010573a92 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 719.307591] #1: 00000000764f790a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 719.316607] 2 locks held by getty/5960: [ 719.320733] #0: 00000000740fbdab (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 719.329129] #1: 00000000ada3c30d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 719.338034] 2 locks held by getty/5961: [ 719.342347] #0: 00000000c0085150 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 719.350897] #1: 000000003ef727b2 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 719.360030] 2 locks held by getty/5962: [ 719.364005] #0: 0000000070058964 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 719.372589] #1: 00000000ead9ac31 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 719.382606] 2 locks held by getty/5963: [ 719.386594] #0: 00000000b77f3925 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 719.395145] #1: 0000000091d31316 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 719.404291] 2 locks held by syz-executor0/6495: [ 719.409213] #0: 00000000d0164181 (cb_lock){++++}, at: ctrl_getfamily+0x305/0x420 [ 719.416858] #1: 00000000d9b32536 (genl_mutex){+.+.}, at: ctrl_getfamily+0x313/0x420 [ 719.425030] 3 locks held by syz-executor0/6499: [ 719.429978] [ 719.431603] ============================================= [ 719.431603] [ 719.438615] NMI backtrace for cpu 0 [ 719.442303] CPU: 0 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc6+ #371 [ 719.449308] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 719.458658] Call Trace: [ 719.461331] dump_stack+0x244/0x39d [ 719.464967] ? dump_stack_print_info.cold.1+0x20/0x20 [ 719.470165] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 719.475706] nmi_cpu_backtrace.cold.2+0x5c/0xa1 [ 719.480436] ? lapic_can_unplug_cpu.cold.27+0x3f/0x3f [ 719.485628] nmi_trigger_cpumask_backtrace+0x1e8/0x22a [ 719.490911] arch_trigger_cpumask_backtrace+0x14/0x20 [ 719.496100] watchdog+0xb51/0x1060 [ 719.499655] ? hungtask_pm_notify+0xb0/0xb0 [ 719.504008] ? __kthread_parkme+0xce/0x1a0 [ 719.508247] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 719.513347] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 719.518471] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 719.523058] ? trace_hardirqs_on+0xbd/0x310 [ 719.527390] ? kasan_check_read+0x11/0x20 [ 719.531540] ? __kthread_parkme+0xce/0x1a0 [ 719.535779] ? trace_hardirqs_off_caller+0x310/0x310 [ 719.540883] ? trace_hardirqs_off_caller+0x310/0x310 [ 719.545986] ? lockdep_init_map+0x9/0x10 [ 719.550058] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 719.555166] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 719.560707] ? __kthread_parkme+0xfb/0x1a0 [ 719.564949] ? hungtask_pm_notify+0xb0/0xb0 [ 719.569275] kthread+0x35a/0x440 [ 719.572644] ? kthread_stop+0x900/0x900 [ 719.576629] ret_from_fork+0x3a/0x50 [ 719.580471] Sending NMI from CPU 0 to CPUs 1: [ 719.586763] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.584 msecs [ 719.586975] NMI backtrace for cpu 1 [ 719.586981] CPU: 1 PID: 6499 Comm: syz-executor0 Not tainted 4.20.0-rc6+ #371 [ 719.586989] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 719.586994] RIP: 0010:__sanitizer_cov_trace_pc+0x26/0x50 [ 719.587006] Code: 5d c3 66 90 55 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 48 69 82 7e 81 e2 00 01 1f 00 75 2b 8b 90 d8 12 00 00 <83> fa 02 75 20 48 8b 88 e0 12 00 00 8b 80 dc 12 00 00 48 8b 11 48 [ 719.587011] RSP: 0018:ffff8881b333e7b8 EFLAGS: 00000246 [ 719.587019] RAX: ffff8881d87b05c0 RBX: 1ffff11036667d04 RCX: 0000000000000000 [ 719.587025] RDX: 0000000000000000 RSI: ffffffff8393345c RDI: ffffffff8860d220 [ 719.587036] RBP: ffff8881b333e7b8 R08: ffffed103b5e5b60 R09: ffffed103b5e5b5f [ 719.587041] R10: ffffed103b5e5b5f R11: ffff8881daf2dafb R12: 0000000000000001 [ 719.587048] R13: ffffffff8860d220 R14: ffffffff8860d1e0 R15: 0000000000000000 [ 719.587054] FS: 00007fc24a514700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 719.587059] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 719.587065] CR2: 0000000000000000 CR3: 00000001b770c000 CR4: 00000000001406e0 [ 719.587070] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 719.587076] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 719.587079] Call Trace: [ 719.587084] check_preemption_disabled+0x1c/0x280 [ 719.587088] debug_smp_processor_id+0x1c/0x20 [ 719.587093] rcu_lockdep_current_cpu_online+0xc9/0x210 [ 719.587096] ? rcu_pm_notify+0xc0/0xc0 [ 719.587101] rcu_read_lock_held+0x90/0xc0 [ 719.587105] tipc_sk_lookup+0xdce/0xff0 [ 719.587109] ? trace_hardirqs_on_caller+0xc0/0x310 [ 719.587113] ? trace_hardirqs_on_caller+0xc0/0x310 [ 719.587118] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 719.587122] ? tipc_connect+0x820/0x820 [ 719.587126] ? validate_nla+0x29a/0x1650 [ 719.587130] ? nla_memcmp+0x90/0x90 [ 719.587133] ? zap_class+0x640/0x640 [ 719.587137] ? retint_kernel+0x2d/0x2d [ 719.587141] ? __nla_parse+0x247/0x3e0 [ 719.587146] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 719.587150] ? __nla_parse+0x12c/0x3e0 [ 719.587153] ? nla_parse+0x46/0x60 [ 719.587157] tipc_nl_publ_dump+0x22d/0xf93 [ 719.587161] ? tipc_nl_sk_dump+0x30/0x30 [ 719.587166] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 719.587170] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 719.587174] ? retint_kernel+0x2d/0x2d [ 719.587178] ? trace_hardirqs_on_caller+0xc0/0x310 [ 719.587183] ? trace_hardirqs_on_caller+0xc0/0x310 [ 719.587187] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 719.587192] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 719.587197] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 719.587200] ? retint_kernel+0x1b/0x2d [ 719.587204] ? trace_hardirqs_on+0x310/0x310 [ 719.587209] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 719.587214] ? __tipc_nl_compat_dumpit.isra.11+0x641/0xb60 [ 719.587219] ? __tipc_nl_compat_dumpit.isra.11+0x22e/0xb60 [ 719.587223] __tipc_nl_compat_dumpit.isra.11+0x25d/0xb60 [ 719.587227] ? __alloc_skb+0x4c6/0x770 [ 719.587232] ? __tipc_add_link_prop.isra.9+0x2d0/0x2d0 [ 719.587236] ? skb_put+0x17b/0x1e0 [ 719.587240] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 719.587244] ? skb_put+0x17b/0x1e0 [ 719.587247] ? nla_put+0x117/0x150 [ 719.587252] tipc_nl_compat_sk_dump+0x88e/0xc50 [ 719.587257] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 719.587261] ? rcu_softirq_qs+0x20/0x20 [ 719.587265] ? zap_class+0x640/0x640 [ 719.587269] ? rhashtable_walk_next+0x2a9/0x6c0 [ 719.587273] ? tipc_nl_sk_dump+0x30/0x30 [ 719.587277] ? tipc_tlv_sprintf+0x2e0/0x2e0 [ 719.587282] ? rhashtable_walk_stop+0x1ca/0x450 [ 719.587285] ? release_sock+0x1ec/0x2c0 [ 719.587290] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 719.587295] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 719.587300] __tipc_nl_compat_dumpit.isra.11+0x389/0xb60 [ 719.587304] ? __tipc_add_link_prop.isra.9+0x2d0/0x2d0 [ 719.587308] ? lock_release+0xa00/0xa00 [ 719.587313] ? perf_trace_sched_process_exec+0x860/0x860 [ 719.587317] ? check_preemption_disabled+0x48/0x280 [ 719.587322] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 719.587326] ? skb_put+0x17b/0x1e0 [ 719.587330] tipc_nl_compat_dumpit+0x1f4/0x440 [ 719.587334] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 719.587339] tipc_nl_compat_recv+0x12b3/0x19a0 [ 719.587343] ? tipc_nl_compat_doit+0x650/0x650 [ 719.587347] ? tipc_dump_start+0x90/0x90 [ 719.587352] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 719.587356] ? find_held_lock+0x36/0x1c0 [ 719.587360] genl_family_rcv_msg+0x8a7/0x11a0 [ 719.587365] ? genl_unregister_family+0x8a0/0x8a0 [ 719.587377] ? lock_downgrade+0x900/0x900 [ 719.587382] ? check_preemption_disabled+0x48/0x280 [ 719.587387] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 719.587391] ? kasan_check_read+0x11/0x20 [ 719.587395] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 719.587399] ? rcu_softirq_qs+0x20/0x20 [ 719.587403] genl_rcv_msg+0xc6/0x168 [ 719.587407] netlink_rcv_skb+0x172/0x440 [ 719.587411] ? genl_family_rcv_msg+0x11a0/0x11a0 [ 719.587415] ? netlink_ack+0xb80/0xb80 [ 719.587419] ? down_read+0x8d/0x120 [ 719.587423] genl_rcv+0x28/0x40 [ 719.587427] netlink_unicast+0x5a5/0x760 [ 719.587431] ? netlink_attachskb+0x9a0/0x9a0 [ 719.587436] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 719.587440] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 719.587444] netlink_sendmsg+0xa18/0xfc0 [ 719.587448] ? netlink_unicast+0x760/0x760 [ 719.587453] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 719.587457] ? apparmor_socket_sendmsg+0x29/0x30 [ 719.587462] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 719.587466] ? security_socket_sendmsg+0x94/0xc0 [ 719.587470] ? netlink_unicast+0x760/0x760 [ 719.587474] sock_sendmsg+0xd5/0x120 [ 719.587478] ___sys_sendmsg+0x7fd/0x930 [ 719.587482] ? copy_msghdr_from_user+0x580/0x580 [ 719.587486] ? trace_hardirqs_on+0xbd/0x310 [ 719.587490] ? __fget_light+0x2e9/0x430 [ 719.587494] ? fget_raw+0x20/0x20 [ 719.587498] ? __might_fault+0x12b/0x1e0 [ 719.587502] ? lock_downgrade+0x900/0x900 [ 719.587506] ? lock_release+0xa00/0xa00 [ 719.587510] ? perf_trace_sched_process_exec+0x860/0x860 [ 719.587515] ? posix_ktime_get_ts+0x15/0x20 [ 719.587519] ? trace_hardirqs_off_caller+0x310/0x310 [ 719.587524] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 719.587528] ? sockfd_lookup_light+0xc5/0x160 [ 719.587532] __sys_sendmsg+0x11d/0x280 [ 719.587536] ? __ia32_sys_shutdown+0x80/0x80 [ 719.587541] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 719.587545] ? put_timespec64+0x10f/0x1b0 [ 719.587549] ? do_syscall_64+0x9a/0x820 [ 719.587553] ? do_syscall_64+0x9a/0x820 [ 719.587557] ? trace_hardirqs_off_caller+0x310/0x310 [ 719.587562] __x64_sys_sendmsg+0x78/0xb0 [ 719.587565] do_syscall_64+0x1b9/0x820 [ 719.587570] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 719.587574] ? syscall_return_slowpath+0x5e0/0x5e0 [ 719.587579] ? trace_hardirqs_on_caller+0x310/0x310 [ 719.587583] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 719.587589] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 719.587593] ? __switch_to_asm+0x40/0x70 [ 719.587609] ? __switch_to_asm+0x34/0x70 [ 719.587613] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 719.587618] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 719.587621] RIP: 0033:0x457659 [ 719.587632] 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 [ 719.587637] RSP: 002b:00007fc24a513c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 719.587665] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457659 [ 719.587670] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000005 [ 719.587676] RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 [ 719.587681] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc24a5146d4 [ 719.587687] R13: 00000000004c4171 R14: 00000000004d7058 R15: 00000000ffffffff [ 719.598980] Kernel panic - not syncing: hung_task: blocked tasks [ 720.344498] CPU: 0 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc6+ #371 [ 720.351515] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 720.360864] Call Trace: [ 720.363458] dump_stack+0x244/0x39d [ 720.367093] ? dump_stack_print_info.cold.1+0x20/0x20 [ 720.372352] panic+0x2ad/0x55c [ 720.375895] ? add_taint.cold.5+0x16/0x16 [ 720.380047] ? nmi_trigger_cpumask_backtrace+0x1c8/0x22a [ 720.385489] ? nmi_trigger_cpumask_backtrace+0x1f9/0x22a [ 720.390934] ? nmi_trigger_cpumask_backtrace+0x1d1/0x22a [ 720.396384] ? nmi_trigger_cpumask_backtrace+0x1c8/0x22a [ 720.401837] watchdog+0xb62/0x1060 [ 720.405404] ? hungtask_pm_notify+0xb0/0xb0 [ 720.409732] ? __kthread_parkme+0xce/0x1a0 [ 720.413967] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 720.419066] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 720.424177] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 720.428763] ? trace_hardirqs_on+0xbd/0x310 [ 720.433192] ? kasan_check_read+0x11/0x20 [ 720.437348] ? __kthread_parkme+0xce/0x1a0 [ 720.441588] ? trace_hardirqs_off_caller+0x310/0x310 [ 720.446692] ? trace_hardirqs_off_caller+0x310/0x310 [ 720.451795] ? lockdep_init_map+0x9/0x10 [ 720.455863] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 720.460971] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 720.466510] ? __kthread_parkme+0xfb/0x1a0 [ 720.470749] ? hungtask_pm_notify+0xb0/0xb0 [ 720.475073] kthread+0x35a/0x440 [ 720.478444] ? kthread_stop+0x900/0x900 [ 720.482426] ret_from_fork+0x3a/0x50 [ 720.487555] Kernel Offset: disabled [ 720.491191] Rebooting in 86400 seconds..