INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.0.43' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 475.034939] IPVS: sync thread started: state = BACKUP, mcast_ifn = tunl0, syncid = 4, id = 0 [ 475.047300] IPVS: stopping backup sync thread 3865 ... [ 475.055430] IPVS: sync thread started: state = BACKUP, mcast_ifn = tunl0, syncid = 4, id = 0 [ 475.055599] IPVS: stopping backup sync thread 3879 ... INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes [ 550.639847] random: crng init done [ 613.592233] INFO: task syzkaller584331:3857 blocked for more than 120 seconds. [ 613.599625] Not tainted 4.9.94-g8683408 #3 [ 613.604501] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 613.612532] syzkaller584331 D29416 3857 3856 0x00000000 [ 613.618317] ffff8801d79a8000 0000000000000000 ffff8801d85724c0 ffff8801d7a4c800 [ 613.626396] ffff8801db221b98 ffff8801d79ef968 ffffffff838c040d ffff8801d79a88c8 [ 613.634422] ffffed003af35118 ffff8801d79a8000 00fffc0000000000 ffff8801db222468 [ 613.642461] Call Trace: [ 613.645096] [] ? __schedule+0x64d/0x1bd0 [ 613.650785] [] schedule+0x7f/0x1b0 [ 613.655989] [] schedule_preempt_disabled+0x13/0x20 [ 613.662563] [] mutex_lock_nested+0x326/0x870 [ 613.668638] [] ? do_ip_vs_set_ctl+0x645/0xbd0 [ 613.674800] [] ? mutex_trylock+0x3e0/0x3e0 [ 613.680711] [] ? __check_object_size+0x248/0x38e [ 613.687130] [] do_ip_vs_set_ctl+0x645/0xbd0 [ 613.693112] [] ? evict+0x32b/0x4f0 [ 613.698377] [] ? iput+0x371/0x900 [ 613.703845] [] ? ip_vs_genl_set_cmd+0x9c0/0x9c0 [ 613.710145] [] ? mutex_lock_nested+0x572/0x870 [ 613.716479] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 613.723331] [] ? __mutex_unlock_slowpath+0x25b/0x3c0 [ 613.730065] [] ? __mutex_unlock_slowpath+0x221/0x3c0 [ 613.736829] [] ? __ww_mutex_lock+0x14c0/0x14c0 [ 613.743095] [] ? sock_has_perm+0x292/0x3e0 [ 613.748959] [] ? mutex_unlock+0x9/0x10 [ 613.754539] [] ? nf_sockopt_find.constprop.0+0x1b1/0x230 [ 613.761612] [] nf_setsockopt+0x6d/0xc0 [ 613.767169] [] ip_setsockopt+0x9a/0xb0 [ 613.772698] [] tcp_setsockopt+0x88/0xe0 [ 613.778324] [] sock_common_setsockopt+0x9a/0xe0 [ 613.784652] [] SyS_setsockopt+0x166/0x260 [ 613.790440] [] ? SyS_recv+0x40/0x40 [ 613.795758] [] ? __do_page_fault+0x183/0xd50 [ 613.801832] [] ? move_addr_to_kernel+0x50/0x50 [ 613.808082] [] ? do_syscall_64+0x48/0x490 [ 613.813869] [] ? SyS_recv+0x40/0x40 [ 613.819120] [] do_syscall_64+0x1a6/0x490 [ 613.824861] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 613.831764] [ 613.831764] Showing all locks held in the system: [ 613.838415] 3 locks held by kworker/1:1/24: [ 613.842739] #0: ("%s"("ipv6_addrconf")){.+.+..}, at: [] process_one_work+0x6ee/0x1500 [ 613.852999] #1: ((addr_chk_work).work){+.+...}, at: [] process_one_work+0x728/0x1500 [ 613.863118] #2: (rtnl_mutex){+.+.+.}, at: [] rtnl_lock+0x17/0x20 [ 613.871502] 2 locks held by khungtaskd/515: [ 613.875835] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 [ 613.884592] #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 [ 613.894294] 2 locks held by getty/3744: [ 613.898249] #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 [ 613.907586] #1: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x202/0x16b0 [ 613.917556] 1 lock held by syzkaller584331/3857: [ 613.922315] #0: (ipvs->sync_mutex){+.+.+.}, at: [] do_ip_vs_set_ctl+0x645/0xbd0 [ 613.931961] 1 lock held by syzkaller584331/3858: [ 613.936735] #0: (ipvs->sync_mutex){+.+.+.}, at: [] do_ip_vs_set_ctl+0x645/0xbd0 [ 613.946414] 1 lock held by syzkaller584331/3859: [ 613.951141] #0: (ipvs->sync_mutex){+.+.+.}, at: [] do_ip_vs_set_ctl+0x645/0xbd0 [ 613.960829] 1 lock held by syzkaller584331/3860: [ 613.965600] #0: (ipvs->sync_mutex){+.+.+.}, at: [] do_ip_vs_set_ctl+0x645/0xbd0 [ 613.975273] 1 lock held by syzkaller584331/3861: [ 613.980000] #0: (ipvs->sync_mutex){+.+.+.}, at: [] do_ip_vs_set_ctl+0x645/0xbd0 [ 613.989675] 1 lock held by syzkaller584331/3862: [ 613.994432] #0: (ipvs->sync_mutex){+.+.+.}, at: [] do_ip_vs_set_ctl+0x645/0xbd0 [ 614.004116] 1 lock held by syzkaller584331/3863: [ 614.008840] #0: (ipvs->sync_mutex){+.+.+.}, at: [] do_ip_vs_set_ctl+0x645/0xbd0 [ 614.019733] 2 locks held by syzkaller584331/3864: [ 614.024585] #0: (rtnl_mutex){+.+.+.}, at: [] rtnl_lock+0x17/0x20 [ 614.032966] #1: (ipvs->sync_mutex){+.+.+.}, at: [] do_ip_vs_set_ctl+0x90d/0xbd0 [ 614.042649] 1 lock held by ipvs-b:0:0/3879: [ 614.046944] #0: (rtnl_mutex){+.+.+.}, at: [] rtnl_lock+0x17/0x20 [ 614.055353] [ 614.056975] ============================================= [ 614.056975] [ 614.064336] NMI backtrace for cpu 0 [ 614.067973] CPU: 0 PID: 515 Comm: khungtaskd Not tainted 4.9.94-g8683408 #3 [ 614.075054] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 614.084499] ffff8801d8677d08 ffffffff81d9b509 0000000000000000 0000000000000000 [ 614.092475] 0000000000000000 0000000000000001 ffffffff810b7d60 ffff8801d8677d40 [ 614.100455] ffffffff81da6837 0000000000000000 0000000000000000 0000000000000002 [ 614.108440] Call Trace: [ 614.111058] [] dump_stack+0xc1/0x128 [ 614.116433] [] ? irq_force_complete_move+0x320/0x320 [ 614.123187] [] nmi_cpu_backtrace.cold.2+0x48/0x87 [ 614.129663] [] ? irq_force_complete_move+0x320/0x320 [ 614.136399] [] nmi_trigger_cpumask_backtrace+0x12a/0x14f [ 614.143493] [] arch_trigger_cpumask_backtrace+0x14/0x20 [ 614.150477] [] watchdog+0x6b4/0xa20 [ 614.155726] [] ? watchdog+0x11c/0xa20 [ 614.161152] [] kthread+0x26d/0x300 [ 614.166312] [] ? reset_hung_task_detector+0x20/0x20 [ 614.172962] [] ? kthread_park+0xa0/0xa0 [ 614.178570] [] ? kthread_park+0xa0/0xa0 [ 614.184173] [] ? kthread_park+0xa0/0xa0 [ 614.189767] [] ret_from_fork+0x5c/0x70 [ 614.195365] Sending NMI from CPU 0 to CPUs 1: [ 614.199868] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff838cff16 [ 614.207235] Kernel panic - not syncing: hung_task: blocked tasks [ 614.213378] CPU: 0 PID: 515 Comm: khungtaskd Not tainted 4.9.94-g8683408 #3 [ 614.220627] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 614.229968] ffff8801d8677cc8 ffffffff81d9b509 ffffffff83a8b4a0 00000000ffffffff [ 614.237972] 0000000000000000 0000000000000000 dffffc0000000000 ffff8801d8677d88 [ 614.245955] ffffffff8141f845 0000000041b58ab3 ffffffff8419c168 ffffffff8141f686 [ 614.253944] Call Trace: [ 614.256509] [] dump_stack+0xc1/0x128 [ 614.261845] [] panic+0x1bf/0x3bc [ 614.266834] [] ? add_taint.cold.6+0x16/0x16 [ 614.272776] [] ? ___preempt_schedule+0x16/0x18 [ 614.278978] [] ? nmi_trigger_cpumask_backtrace+0x100/0x14f [ 614.286233] [] watchdog+0x6c5/0xa20 [ 614.291480] [] ? watchdog+0x11c/0xa20 [ 614.296904] [] kthread+0x26d/0x300 [ 614.302068] [] ? reset_hung_task_detector+0x20/0x20 [ 614.308711] [] ? kthread_park+0xa0/0xa0 [ 614.314303] [] ? kthread_park+0xa0/0xa0 [ 614.319899] [] ? kthread_park+0xa0/0xa0 [ 614.325497] [] ret_from_fork+0x5c/0x70 [ 614.331606] Dumping ftrace buffer: [ 614.335166] (ftrace buffer empty) [ 614.338854] Kernel Offset: disabled [ 614.342464] Rebooting in 86400 seconds..