INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "3" 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 Warning: Permanently added '10.128.0.52' (ECDSA) to the list of known hosts. 2018/06/22 14:42:22 parsed 1 programs 2018/06/22 14:42:25 executed programs: 0 [ 578.668248] IPVS: Creating netns size=2536 id=1 [ 578.816460] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 578.828709] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 578.877093] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 578.890579] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 578.942494] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 578.954314] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 578.967127] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 578.989255] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 579.593227] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 579.620752] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 579.627192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 579.633937] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 736.665728] INFO: task syz-executor0:4172 blocked for more than 120 seconds. [ 736.673240] Not tainted 4.9.109-ge1815b3 #3 [ 736.678508] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 736.686754] syz-executor0 D28912 4172 3795 0x20020004 [ 736.692838] ffff8801d3ff8000 ffff8801d8759a40 ffff8801d3f7b480 ffff8801d8a99800 [ 736.701473] ffff8801db221c18 ffff8801d390fb90 ffffffff839e8a8d 0000000000000002 [ 736.710018] 0000000041b58ab3 ffffffff843b9d9b 00ffffff81221500 ffff8801db2224e8 [ 736.718587] Call Trace: [ 736.721208] [] ? __schedule+0x64d/0x1bd0 [ 736.726974] [] schedule+0x7f/0x1b0 [ 736.732543] [] blk_mq_freeze_queue_wait+0x114/0x230 [ 736.739298] [] ? plug_ctx_cmp+0x100/0x100 [ 736.745182] [] ? prepare_to_wait_event+0x450/0x450 [ 736.751940] [] blk_mq_freeze_queue+0x1d/0x20 [ 736.758125] [] lo_ioctl+0x722/0x1aa0 [ 736.763494] [] lo_compat_ioctl+0xb2/0x140 [ 736.769376] [] ? lo_ioctl+0x1aa0/0x1aa0 [ 736.775073] [] compat_blkdev_ioctl+0x3a5/0x3ad0 [ 736.781498] [] ? debug_check_no_obj_freed+0x2ec/0x930 [ 736.788392] [] ? cfq_dispatch_requests+0x2ef0/0x2ef0 [ 736.795189] [] ? compat_SyS_futex+0x1e1/0x2f0 [ 736.801408] [] ? security_file_ioctl+0x8f/0xc0 [ 736.807689] [] compat_SyS_ioctl+0x126/0x1fe0 [ 736.813732] [] ? cfq_dispatch_requests+0x2ef0/0x2ef0 [ 736.820870] [] ? do_ioctl+0x60/0x60 [ 736.826174] [] do_fast_syscall_32+0x2f7/0x870 [ 736.832637] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 736.839705] [] entry_SYSENTER_compat+0x90/0xa2 [ 736.845960] [ 736.845960] Showing all locks held in the system: [ 736.852599] 2 locks held by khungtaskd/519: [ 736.856987] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 [ 736.866127] #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 [ 736.875958] 2 locks held by getty/3645: [ 736.879915] #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 [ 736.889390] #1: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x202/0x16e0 [ 736.899484] 1 lock held by syz-executor0/4172: [ 736.904044] #0: (&lo->lo_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x8b/0x1aa0 [ 736.913478] [ 736.915105] ============================================= [ 736.915105] [ 736.922348] NMI backtrace for cpu 0 [ 736.926056] CPU: 0 PID: 519 Comm: khungtaskd Not tainted 4.9.109-ge1815b3 #3 [ 736.933232] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 736.942569] ffff8801d8557d08 ffffffff81eb3e29 0000000000000000 0000000000000000 [ 736.950565] 0000000000000000 0000000000000001 ffffffff810b9580 ffff8801d8557d40 [ 736.958549] ffffffff81ebf127 0000000000000000 0000000000000000 0000000000000002 [ 736.966622] Call Trace: [ 736.969227] [] dump_stack+0xc1/0x128 [ 736.974708] [] ? irq_force_complete_move+0x320/0x320 [ 736.981451] [] nmi_cpu_backtrace.cold.2+0x48/0x87 [ 736.987929] [] ? irq_force_complete_move+0x320/0x320 [ 736.994661] [] nmi_trigger_cpumask_backtrace+0x12a/0x14f [ 737.001738] [] arch_trigger_cpumask_backtrace+0x14/0x20 [ 737.008751] [] watchdog+0x6b4/0xa20 [ 737.014022] [] ? watchdog+0x11c/0xa20 [ 737.019523] [] kthread+0x26d/0x300 [ 737.024692] [] ? reset_hung_task_detector+0x20/0x20 [ 737.031346] [] ? kthread_park+0xa0/0xa0 [ 737.037034] [] ? kthread_park+0xa0/0xa0 [ 737.042630] [] ? kthread_park+0xa0/0xa0 [ 737.048233] [] ret_from_fork+0x5c/0x70 [ 737.053863] Sending NMI from CPU 0 to CPUs 1: [ 737.058417] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff839f8596 [ 737.066038] Kernel panic - not syncing: hung_task: blocked tasks [ 737.072186] CPU: 1 PID: 519 Comm: khungtaskd Not tainted 4.9.109-ge1815b3 #3 [ 737.079380] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 737.088724] ffff8801d8557cc8 ffffffff81eb3e29 ffffffff83c8bbe0 00000000ffffffff [ 737.096862] 0000000000000000 0000000000000001 dffffc0000000000 ffff8801d8557d88 [ 737.104891] ffffffff81421925 0000000041b58ab3 ffffffff843b9a40 ffffffff81421766 [ 737.112898] Call Trace: [ 737.115470] [] dump_stack+0xc1/0x128 [ 737.120817] [] panic+0x1bf/0x3bc [ 737.125829] [] ? add_taint.cold.6+0x16/0x16 [ 737.131800] [] ? ___preempt_schedule+0x16/0x18 [ 737.138038] [] ? nmi_trigger_cpumask_backtrace+0x100/0x14f [ 737.145319] [] watchdog+0x6c5/0xa20 [ 737.150629] [] ? watchdog+0x11c/0xa20 [ 737.156107] [] kthread+0x26d/0x300 [ 737.161443] [] ? reset_hung_task_detector+0x20/0x20 [ 737.168119] [] ? kthread_park+0xa0/0xa0 [ 737.173765] [] ? kthread_park+0xa0/0xa0 [ 737.179399] [] ? kthread_park+0xa0/0xa0 [ 737.185022] [] ret_from_fork+0x5c/0x70 [ 737.191176] Dumping ftrace buffer: [ 737.194926] (ftrace buffer empty) [ 737.198641] Kernel Offset: disabled [ 737.202291] Rebooting in 86400 seconds..