[info] Using makefile-style concurrent boot in runlevel 2. [ 26.232775] audit: type=1800 audit(1544475064.354:21): pid=5860 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 26.252524] audit: type=1800 audit(1544475064.374:22): pid=5860 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 '10.128.0.84' (ECDSA) to the list of known hosts. 2018/12/10 21:00:10 parsed 1 programs 2018/12/10 21:00:13 executed programs: 0 syzkaller login: [ 574.944224] IPVS: ftp: loaded support on port[0] = 21 [ 575.195958] bridge0: port 1(bridge_slave_0) entered blocking state [ 575.202811] bridge0: port 1(bridge_slave_0) entered disabled state [ 575.210368] device bridge_slave_0 entered promiscuous mode [ 575.229441] bridge0: port 2(bridge_slave_1) entered blocking state [ 575.235891] bridge0: port 2(bridge_slave_1) entered disabled state [ 575.242791] device bridge_slave_1 entered promiscuous mode [ 575.261196] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 575.278777] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 575.328317] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 575.348027] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 575.427533] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 575.435388] team0: Port device team_slave_0 added [ 575.451917] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 575.459144] team0: Port device team_slave_1 added [ 575.476188] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 575.497217] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 575.517593] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 575.537956] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 575.680124] bridge0: port 2(bridge_slave_1) entered blocking state [ 575.686601] bridge0: port 2(bridge_slave_1) entered forwarding state [ 575.693569] bridge0: port 1(bridge_slave_0) entered blocking state [ 575.700084] bridge0: port 1(bridge_slave_0) entered forwarding state [ 576.202505] 8021q: adding VLAN 0 to HW filter on device bond0 [ 576.253268] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 576.305531] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 576.311753] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 576.319827] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 576.366823] 8021q: adding VLAN 0 to HW filter on device team0 [ 740.524635] INFO: task syz-executor0:6522 blocked for more than 140 seconds. [ 740.532048] Not tainted 4.20.0-rc6+ #273 [ 740.537097] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 740.545354] syz-executor0 D22360 6522 6030 0x20020004 [ 740.550994] Call Trace: [ 740.553636] __schedule+0x8cf/0x21d0 [ 740.563172] ? __sched_text_start+0x8/0x8 [ 740.567708] ? print_usage_bug+0xc0/0xc0 [ 740.572344] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 740.577279] ? zap_class+0x640/0x640 [ 740.581009] ? zap_class+0x640/0x640 [ 740.585211] ? zap_class+0x640/0x640 [ 740.588945] ? find_held_lock+0x36/0x1c0 [ 740.593023] schedule+0xfe/0x460 [ 740.596776] ? __mutex_lock+0xafa/0x16f0 [ 740.600848] ? __schedule+0x21d0/0x21d0 [ 740.605395] ? kasan_check_read+0x11/0x20 [ 740.609560] ? do_raw_spin_unlock+0xa7/0x330 [ 740.613975] ? do_raw_spin_trylock+0x270/0x270 [ 740.618986] ? ww_mutex_lock.part.8+0xf0/0xf0 [ 740.623501] ? mutex_destroy+0x200/0x200 [ 740.628760] schedule_preempt_disabled+0x13/0x20 [ 740.633545] __mutex_lock+0xaff/0x16f0 [ 740.637819] ? ctrl_getfamily+0x313/0x420 [ 740.642000] ? mutex_trylock+0x2b0/0x2b0 [ 740.646475] ? find_held_lock+0x36/0x1c0 [ 740.650545] ? zap_class+0x640/0x640 [ 740.654277] ? find_held_lock+0x36/0x1c0 [ 740.658687] ? lock_acquire+0x1ed/0x520 [ 740.662677] ? ctrl_getfamily+0x305/0x420 [ 740.667134] ? lock_release+0xa00/0xa00 [ 740.671121] ? mutex_trylock+0x2b0/0x2b0 [ 740.675491] ? down_read+0x8d/0x120 [ 740.679126] ? ctrl_getfamily+0x305/0x420 [ 740.683279] ? __down_interruptible+0x700/0x700 [ 740.688352] ? __nla_parse+0x12c/0x3e0 [ 740.692345] mutex_lock_nested+0x16/0x20 [ 740.696926] ? mutex_lock_nested+0x16/0x20 [ 740.701173] ctrl_getfamily+0x313/0x420 [ 740.705493] genl_family_rcv_msg+0x8a7/0x11a0 [ 740.710019] ? genl_unregister_family+0x8a0/0x8a0 [ 740.715167] ? lock_downgrade+0x900/0x900 [ 740.719404] ? check_preemption_disabled+0x48/0x280 [ 740.724462] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 740.729720] ? kasan_check_read+0x11/0x20 [ 740.733873] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 740.739484] ? rcu_softirq_qs+0x20/0x20 [ 740.743496] genl_rcv_msg+0xc6/0x168 [ 740.747528] netlink_rcv_skb+0x172/0x440 [ 740.751703] ? genl_family_rcv_msg+0x11a0/0x11a0 [ 740.757756] ? netlink_ack+0xb80/0xb80 [ 740.761657] ? down_read+0x8d/0x120 [ 740.765612] genl_rcv+0x28/0x40 [ 740.768904] netlink_unicast+0x5a5/0x760 [ 740.772978] ? netlink_attachskb+0x9a0/0x9a0 [ 740.777816] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 740.783625] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 740.789001] netlink_sendmsg+0xa18/0xfc0 [ 740.793146] ? move_addr_to_kernel.part.18+0xc6/0x100 [ 740.798668] ? netlink_unicast+0x760/0x760 [ 740.802972] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 740.808297] ? apparmor_socket_sendmsg+0x29/0x30 [ 740.813064] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 740.819001] ? security_socket_sendmsg+0x94/0xc0 [ 740.823778] ? netlink_unicast+0x760/0x760 [ 740.828471] sock_sendmsg+0xd5/0x120 [ 740.832199] ___sys_sendmsg+0x7fd/0x930 [ 740.836484] ? find_held_lock+0x36/0x1c0 [ 740.840593] ? copy_msghdr_from_user+0x580/0x580 [ 740.845717] ? __fd_install+0x2b5/0x8f0 [ 740.849704] ? check_preemption_disabled+0x48/0x280 [ 740.855020] ? __fget_light+0x2e9/0x430 [ 740.859011] ? fget_raw+0x20/0x20 [ 740.862474] ? zap_class+0x640/0x640 [ 740.866513] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 740.872056] ? __fd_install+0x2f9/0x8f0 [ 740.876330] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 740.881873] ? sockfd_lookup_light+0xc5/0x160 [ 740.887563] __sys_sendmsg+0x11d/0x280 [ 740.891466] ? __ia32_sys_shutdown+0x80/0x80 [ 740.896240] ? perf_trace_sched_process_exec+0x860/0x860 [ 740.901737] ? usercopy_warn+0x110/0x110 [ 740.906120] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 740.911710] __ia32_compat_sys_socketcall+0xb81/0x1090 [ 740.917328] ? __x32_compat_sys_recvmmsg+0x150/0x150 [ 740.922473] ? trace_hardirqs_on+0xbd/0x310 [ 740.927145] ? entry_SYSENTER_compat+0x70/0x7f [ 740.931735] ? trace_hardirqs_off_caller+0x310/0x310 [ 740.937150] ? prepare_exit_to_usermode+0x342/0x3b0 [ 740.942166] ? trace_hardirqs_on+0x310/0x310 [ 740.947035] do_fast_syscall_32+0x34d/0xfb2 [ 740.951389] ? do_int80_syscall_32+0x890/0x890 [ 740.956445] ? entry_SYSENTER_compat+0x68/0x7f [ 740.961042] ? trace_hardirqs_off_caller+0xbb/0x310 [ 740.966371] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 740.971223] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 740.976381] ? trace_hardirqs_on_caller+0x310/0x310 [ 740.981407] ? prepare_exit_to_usermode+0x291/0x3b0 [ 740.986838] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 740.991855] entry_SYSENTER_compat+0x70/0x7f [ 740.996739] RIP: 0023:0xf7fefa29 [ 741.000124] Code: Bad RIP value. [ 741.003485] RSP: 002b:00000000f7feae40 EFLAGS: 00000286 ORIG_RAX: 0000000000000066 [ 741.011527] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00000000f7feae54 [ 741.019980] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000014 [ 741.027530] RBP: 00000000f7feb168 R08: 0000000000000000 R09: 0000000000000000 [ 741.035055] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 741.042326] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 741.049997] [ 741.049997] Showing all locks held in the system: [ 741.056631] 1 lock held by khungtaskd/1019: [ 741.061038] #0: 0000000042b43671 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 [ 741.070093] 1 lock held by rsyslogd/5898: [ 741.074256] #0: 00000000e4f54a1e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 [ 741.082571] 2 locks held by getty/5988: [ 741.086814] #0: 000000009b23f3b1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 741.095350] #1: 000000001ee6804e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 741.104294] 2 locks held by getty/5989: [ 741.108575] #0: 00000000a59ed98d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 741.117093] #1: 000000007e5a040e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 741.126277] 2 locks held by getty/5990: [ 741.130258] #0: 00000000d11114e6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 741.138802] #1: 00000000c2fc71c9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 741.148824] 2 locks held by getty/5991: [ 741.152795] #0: 000000006ea89ce1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 741.161325] #1: 0000000091e8771b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 741.170532] 2 locks held by getty/5992: [ 741.174778] #0: 00000000694ecaa7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 741.183036] #1: 0000000042fd08ce (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 741.192194] 2 locks held by getty/5993: [ 741.196443] #0: 00000000430b5351 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 741.204960] #1: 00000000223f65d2 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 741.213908] 2 locks held by getty/5994: [ 741.218445] #0: 000000000887fa4c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 741.226960] #1: 000000009960b3d6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 741.236090] 2 locks held by syz-executor0/6522: [ 741.240764] #0: 0000000067cf9fd5 (cb_lock){++++}, at: ctrl_getfamily+0x305/0x420 [ 741.248784] #1: 00000000c850f186 (genl_mutex){+.+.}, at: ctrl_getfamily+0x313/0x420 [ 741.256947] 4 locks held by syz-executor0/6526: [ 741.261625] [ 741.263253] ============================================= [ 741.263253] [ 741.270595] NMI backtrace for cpu 1 [ 741.274235] CPU: 1 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc6+ #273 [ 741.281243] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 741.290588] Call Trace: [ 741.293260] dump_stack+0x244/0x39d [ 741.296897] ? dump_stack_print_info.cold.1+0x20/0x20 [ 741.302128] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 741.307677] nmi_cpu_backtrace.cold.2+0x5c/0xa1 [ 741.312412] ? lapic_can_unplug_cpu.cold.27+0x3f/0x3f [ 741.317606] nmi_trigger_cpumask_backtrace+0x1e8/0x22a [ 741.322895] arch_trigger_cpumask_backtrace+0x14/0x20 [ 741.328121] watchdog+0xb51/0x1060 [ 741.331678] ? hungtask_pm_notify+0xb0/0xb0 [ 741.336049] ? __kthread_parkme+0xce/0x1a0 [ 741.340288] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 741.345394] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 741.350508] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 741.355100] ? trace_hardirqs_on+0xbd/0x310 [ 741.359437] ? kasan_check_read+0x11/0x20 [ 741.363598] ? __kthread_parkme+0xce/0x1a0 [ 741.367833] ? trace_hardirqs_off_caller+0x310/0x310 [ 741.372939] ? preempt_schedule+0x4d/0x60 [ 741.377109] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 741.382216] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 741.387753] ? __kthread_parkme+0xfb/0x1a0 [ 741.391997] ? hungtask_pm_notify+0xb0/0xb0 [ 741.396424] kthread+0x35a/0x440 [ 741.399791] ? kthread_stop+0x900/0x900 [ 741.403768] ret_from_fork+0x3a/0x50 [ 741.407593] Sending NMI from CPU 1 to CPUs 0: [ 741.413711] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.414 msecs [ 741.414113] NMI backtrace for cpu 0 [ 741.414119] CPU: 0 PID: 6526 Comm: syz-executor0 Not tainted 4.20.0-rc6+ #273 [ 741.414126] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 741.414131] RIP: 0010:__sanitizer_cov_trace_switch+0x3b/0x90 [ 741.414143] Code: 48 83 f8 10 74 6b 76 4a 48 83 f8 20 74 5b 48 83 f8 40 41 be 07 00 00 00 75 2d 4c 8b 3e 31 db 49 89 f4 49 89 fd 4d 85 ff 74 1d <49> 8b 74 dc 10 4c 89 ea 4c 89 f7 48 83 c3 01 48 8b 4d 08 e8 ed fd [ 741.414148] RSP: 0018:ffff8881b27e68e8 EFLAGS: 00000202 [ 741.414157] RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff83a4be60 [ 741.414163] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000001 [ 741.414168] RBP: ffff8881b27e6910 R08: ffff8881d89d64c0 R09: ffff8881b27e6ce0 [ 741.414174] R10: ffffed10364fcda8 R11: ffff8881b27e6d47 R12: ffffffff88630e80 [ 741.414179] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000003 [ 741.414185] FS: 0000000000000000(0000) GS:ffff8881dae00000(0063) knlGS:00000000f7fa9b40 [ 741.414190] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 741.414196] CR2: ffffffffff600400 CR3: 00000001b66ce000 CR4: 00000000001406f0 [ 741.414202] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 741.414207] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 741.414211] Call Trace: [ 741.414214] validate_nla+0x540/0x1650 [ 741.414218] ? nla_memcmp+0x90/0x90 [ 741.414222] ? zap_class+0x640/0x640 [ 741.414225] ? retint_kernel+0x2d/0x2d [ 741.414229] __nla_parse+0x2f4/0x3e0 [ 741.414233] nla_parse+0x46/0x60 [ 741.414237] tipc_nl_publ_dump+0x9f0/0xf93 [ 741.414241] ? tipc_nl_sk_dump+0x30/0x30 [ 741.414246] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 741.414250] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 741.414254] ? retint_kernel+0x2d/0x2d [ 741.414259] ? trace_hardirqs_on_caller+0xc0/0x310 [ 741.414263] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 741.414267] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 741.414272] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 741.414276] ? retint_kernel+0x1b/0x2d [ 741.414280] ? trace_hardirqs_on+0x310/0x310 [ 741.414284] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 741.414289] __tipc_nl_compat_dumpit.isra.11+0x25d/0xb60 [ 741.414293] ? __alloc_skb+0x4c6/0x770 [ 741.414297] ? __tipc_add_link_prop.isra.9+0x2d0/0x2d0 [ 741.414301] ? skb_put+0x17b/0x1e0 [ 741.414305] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 741.414309] ? skb_put+0x17b/0x1e0 [ 741.414313] ? nla_put+0x117/0x150 [ 741.414318] tipc_nl_compat_sk_dump+0x88e/0xc50 [ 741.414322] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 741.414326] ? rcu_softirq_qs+0x20/0x20 [ 741.414330] ? zap_class+0x640/0x640 [ 741.414334] ? rhashtable_walk_next+0x2a9/0x6c0 [ 741.414338] ? tipc_nl_sk_dump+0x30/0x30 [ 741.414342] ? tipc_tlv_sprintf+0x2e0/0x2e0 [ 741.414347] ? rhashtable_walk_stop+0x1ca/0x450 [ 741.414351] ? release_sock+0x1ec/0x2c0 [ 741.414355] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 741.414360] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 741.414365] __tipc_nl_compat_dumpit.isra.11+0x389/0xb60 [ 741.414369] ? __tipc_add_link_prop.isra.9+0x2d0/0x2d0 [ 741.414373] ? lock_release+0xa00/0xa00 [ 741.414378] ? perf_trace_sched_process_exec+0x860/0x860 [ 741.414382] ? check_preemption_disabled+0x48/0x280 [ 741.414387] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 741.414391] ? skb_put+0x17b/0x1e0 [ 741.414404] tipc_nl_compat_dumpit+0x1f4/0x440 [ 741.414409] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 741.414413] tipc_nl_compat_recv+0x12b3/0x19a0 [ 741.414417] ? tipc_nl_compat_doit+0x650/0x650 [ 741.414421] ? tipc_dump_start+0x90/0x90 [ 741.414431] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 741.414435] ? find_held_lock+0x36/0x1c0 [ 741.414439] genl_family_rcv_msg+0x8a7/0x11a0 [ 741.414444] ? genl_unregister_family+0x8a0/0x8a0 [ 741.414448] ? lock_downgrade+0x900/0x900 [ 741.414452] ? check_preemption_disabled+0x48/0x280 [ 741.414457] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 741.414461] ? kasan_check_read+0x11/0x20 [ 741.414465] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 741.414469] ? rcu_softirq_qs+0x20/0x20 [ 741.414473] genl_rcv_msg+0xc6/0x168 [ 741.414477] netlink_rcv_skb+0x172/0x440 [ 741.414482] ? genl_family_rcv_msg+0x11a0/0x11a0 [ 741.414486] ? netlink_ack+0xb80/0xb80 [ 741.414489] ? down_read+0x8d/0x120 [ 741.414493] genl_rcv+0x28/0x40 [ 741.414497] netlink_unicast+0x5a5/0x760 [ 741.414501] ? netlink_attachskb+0x9a0/0x9a0 [ 741.414506] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 741.414511] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 741.414515] netlink_sendmsg+0xa18/0xfc0 [ 741.414519] ? netlink_unicast+0x760/0x760 [ 741.414523] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 741.414528] ? apparmor_socket_sendmsg+0x29/0x30 [ 741.414533] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 741.414537] ? security_socket_sendmsg+0x94/0xc0 [ 741.414541] ? netlink_unicast+0x760/0x760 [ 741.414545] sock_sendmsg+0xd5/0x120 [ 741.414549] ___sys_sendmsg+0x7fd/0x930 [ 741.414553] ? copy_msghdr_from_user+0x580/0x580 [ 741.414557] ? trace_hardirqs_on+0xbd/0x310 [ 741.414561] ? __fget_light+0x2e9/0x430 [ 741.414565] ? fget_raw+0x20/0x20 [ 741.414569] ? __might_fault+0x12b/0x1e0 [ 741.414573] ? lock_downgrade+0x900/0x900 [ 741.414577] ? lock_release+0xa00/0xa00 [ 741.414581] ? perf_trace_sched_process_exec+0x860/0x860 [ 741.414585] ? pvclock_read_flags+0x160/0x160 [ 741.414589] ? posix_ktime_get_ts+0x15/0x20 [ 741.414594] ? trace_hardirqs_off_caller+0x310/0x310 [ 741.414599] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 741.414603] ? sockfd_lookup_light+0xc5/0x160 [ 741.414607] __sys_sendmsg+0x11d/0x280 [ 741.414611] ? __ia32_sys_shutdown+0x80/0x80 [ 741.414616] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 741.414620] ? put_old_timespec32+0x110/0x280 [ 741.414625] ? do_fast_syscall_32+0x150/0xfb2 [ 741.414629] ? do_fast_syscall_32+0x150/0xfb2 [ 741.414633] ? trace_hardirqs_off_caller+0x310/0x310 [ 741.414638] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 741.414642] do_fast_syscall_32+0x34d/0xfb2 [ 741.414646] ? do_int80_syscall_32+0x890/0x890 [ 741.414650] ? entry_SYSENTER_compat+0x68/0x7f [ 741.414655] ? trace_hardirqs_off_caller+0xbb/0x310 [ 741.414659] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 741.414663] ? trace_hardirqs_on_caller+0x310/0x310 [ 741.414668] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 741.414673] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 741.414678] ? __switch_to_asm+0x40/0x70 [ 741.414682] ? __switch_to_asm+0x34/0x70 [ 741.414686] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 741.414690] entry_SYSENTER_compat+0x70/0x7f [ 741.414694] RIP: 0023:0xf7fefa29 [ 741.414706] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 741.414710] RSP: 002b:00000000f7fa90cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172 [ 741.414720] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020000180 [ 741.414726] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 741.414731] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 741.414737] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 741.414743] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 741.419585] Kernel panic - not syncing: hung_task: blocked tasks [ 742.116341] CPU: 1 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc6+ #273 [ 742.123351] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 742.132697] Call Trace: [ 742.135292] dump_stack+0x244/0x39d [ 742.138928] ? dump_stack_print_info.cold.1+0x20/0x20 [ 742.144189] panic+0x2ad/0x55c [ 742.147384] ? add_taint.cold.5+0x16/0x16 [ 742.151542] ? nmi_trigger_cpumask_backtrace+0x1c8/0x22a [ 742.156993] ? nmi_trigger_cpumask_backtrace+0x1f9/0x22a [ 742.162443] ? nmi_trigger_cpumask_backtrace+0x1d1/0x22a [ 742.167897] ? nmi_trigger_cpumask_backtrace+0x1c8/0x22a [ 742.173362] watchdog+0xb62/0x1060 [ 742.176921] ? hungtask_pm_notify+0xb0/0xb0 [ 742.181341] ? __kthread_parkme+0xce/0x1a0 [ 742.185583] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 742.190691] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 742.195796] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 742.200382] ? trace_hardirqs_on+0xbd/0x310 [ 742.204705] ? kasan_check_read+0x11/0x20 [ 742.208854] ? __kthread_parkme+0xce/0x1a0 [ 742.213103] ? trace_hardirqs_off_caller+0x310/0x310 [ 742.218209] ? preempt_schedule+0x4d/0x60 [ 742.222374] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 742.227482] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 742.233019] ? __kthread_parkme+0xfb/0x1a0 [ 742.237259] ? hungtask_pm_notify+0xb0/0xb0 [ 742.241580] kthread+0x35a/0x440 [ 742.244951] ? kthread_stop+0x900/0x900 [ 742.248926] ret_from_fork+0x3a/0x50 [ 742.254173] Kernel Offset: disabled [ 742.257815] Rebooting in 86400 seconds..