INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.0.22' (ECDSA) to the list of known hosts. 2019/02/14 09:01:53 parsed 1 programs 2019/02/14 09:01:56 executed programs: 0 INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "6" 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 INIT: Id "5" respawning too fast: disabled for 5 minutes [ 981.589769] INFO: task syz-executor.0:2195 blocked for more than 140 seconds. [ 981.597202] Not tainted 4.4.174+ #17 [ 981.601475] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 981.609435] syz-executor.0 D ffff8800b4c27928 25496 2195 1 0x20020004 [ 981.616920] ffff8800b4c27928 ffff8800b4e24740 13bdfd5eb890068e ffff8800b4e24740 [ 981.625194] 0000000000000001 ffff8800b4e25000 ffff8801db61f180 ffff8801db61f1a8 [ 981.633393] ffff8801db61e898 ffff8801da6497c0 ffff8800b4e24740 ffffed0016984001 [ 981.641487] Call Trace: [ 981.644067] [] schedule+0x99/0x1d0 [ 981.649235] [] schedule_preempt_disabled+0x13/0x20 [ 981.655832] [] mutex_lock_nested+0x3c2/0xb80 [ 981.661989] [] ? blkdev_reread_part+0x1f/0x40 [ 981.668126] [] ? find_next_bit+0x44/0x50 [ 981.673878] [] ? mutex_trylock+0x500/0x500 [ 981.679787] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 981.686717] [] blkdev_reread_part+0x1f/0x40 [ 981.692723] [] loop_reread_partitions+0x7c/0x90 [ 981.699033] [] loop_clr_fd+0x7f1/0xa70 [ 981.704588] [] lo_ioctl+0x7b6/0x1a70 [ 981.709978] [] ? compat_SyS_open+0x2a/0x40 [ 981.715859] [] ? do_fast_syscall_32+0x32d/0xa90 [ 981.722232] [] ? sysenter_flags_fixed+0xd/0x1a [ 981.728464] [] lo_compat_ioctl+0xad/0x140 [ 981.734497] [] ? lo_ioctl+0x1a70/0x1a70 [ 981.740133] [] compat_blkdev_ioctl+0xca0/0x344f [ 981.746433] [] ? cfq_merged_request+0x100/0x100 [ 981.752765] [] ? get_unused_fd_flags+0xd0/0xd0 [ 981.759054] [] ? security_file_ioctl+0x8f/0xc0 [ 981.765383] [] ? cfq_merged_request+0x100/0x100 [ 981.771807] [] compat_SyS_ioctl+0x403/0x2210 [ 981.777861] [] ? compat_SyS_ppoll+0x3d0/0x3d0 [ 981.784039] [] ? putname+0xe0/0x120 [ 981.789309] [] ? do_sys_open+0x237/0x600 [ 981.795035] [] ? filp_open+0x70/0x70 [ 981.800403] [] ? SyS_mkdirat+0x164/0x250 [ 981.806150] [] ? SyS_mknod+0x40/0x40 [ 981.811558] [] ? do_fast_syscall_32+0xd6/0xa90 [ 981.817783] [] ? compat_SyS_ppoll+0x3d0/0x3d0 [ 981.823971] [] do_fast_syscall_32+0x32d/0xa90 [ 981.830131] [] sysenter_flags_fixed+0xd/0x1a [ 981.836169] 2 locks held by syz-executor.0/2195: [ 981.840924] #0: (loop_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x85/0x1a70 [ 981.850173] #1: (&bdev->bd_mutex){+.+.+.}, at: [] blkdev_reread_part+0x1f/0x40 [ 981.859939] Sending NMI to all CPUs: [ 981.864923] NMI backtrace for cpu 0 [ 981.868530] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.174+ #17 [ 981.874933] task: ffffffff82e151c0 task.stack: ffffffff82e00000 [ 981.881010] RIP: 0010:[] [] native_safe_halt+0x2/0x10 [ 981.889396] RSP: 0018:ffffffff82e07db0 EFLAGS: 00000246 [ 981.894880] RAX: 0000000000000007 RBX: ffffffff8319bf68 RCX: 0000000000000000 [ 981.902154] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff82e15a84 [ 981.909509] RBP: ffffffff82e07de0 R08: 0000000000000000 R09: 0000000000000000 [ 981.916809] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 981.924089] R13: ffffffff82e08000 R14: dffffc0000000000 R15: ffffffff82e00000 [ 981.931434] FS: 0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 [ 981.939681] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 981.945541] CR2: 0000000000850000 CR3: 00000001d7fcf000 CR4: 00000000001606b0 [ 981.952969] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 981.960253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 981.967504] Stack: [ 981.969665] ffffffff81020b16 ffffffff82e00000 0000000000000000 ffffffff82e08000 [ 981.977243] dffffc0000000000 ffffffff82e00000 ffffffff82e07df0 ffffffff81022d50 [ 981.984811] ffffffff82e07e08 ffffffff811eb4c8 0000000000000000 ffffffff82e07ed0 [ 981.992357] Call Trace: [ 981.994917] [] ? default_idle+0x56/0x3d0 [ 982.000640] [] arch_cpu_idle+0x10/0x20 [ 982.006166] [] default_idle_call+0x48/0x70 [ 982.012058] [] cpu_startup_entry+0x6d1/0x810 [ 982.018102] [] ? complete+0x18/0x70 [ 982.023397] [] ? call_cpuidle+0xe0/0xe0 [ 982.029092] [] ? schedule+0xab/0x1d0 [ 982.034466] [] rest_init+0x190/0x199 [ 982.039922] [] ? trace_event_define_fields_x86_irq_vector+0x2c/0x2c [ 982.047983] [] start_kernel+0x64a/0x67e [ 982.053627] [] ? thread_stack_cache_init+0xb/0xb [ 982.060032] [] ? early_idt_handler_array+0x120/0x120 [ 982.066863] [] ? early_idt_handler_array+0x120/0x120 [ 982.073643] [] x86_64_start_reservations+0x29/0x2b [ 982.080233] [] x86_64_start_kernel+0x137/0x15a [ 982.086583] Code: 2e 0f 1f 84 00 00 00 00 00 fa c3 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 fb c3 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 fb f4 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 f4 c3 0f 1f 40 00 66 [ 982.105710] NMI backtrace for cpu 1 [ 982.109330] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #17 [ 982.115864] task: ffff8801da6f4740 task.stack: ffff8800001d0000 [ 982.121926] RIP: 0010:[] [] flat_send_IPI_mask+0xf7/0x1b0 [ 982.130736] RSP: 0018:ffff8800001d7c88 EFLAGS: 00000046 [ 982.136176] RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 982.143670] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300 [ 982.150949] RBP: ffff8800001d7cb8 R08: 0000000000000018 R09: 0000000000000000 [ 982.158196] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246 [ 982.165838] R13: 0000000003000000 R14: ffffffff82e5f2e0 R15: 0000000000000002 [ 982.173154] FS: 0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 [ 982.181435] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 982.187310] CR2: 0000000001239000 CR3: 00000001d2e19000 CR4: 00000000001606b0 [ 982.194598] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 982.201871] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 982.209126] Stack: [ 982.211283] 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34 [ 982.218801] 000000000001b6c0 0000000000000008 ffff8800001d7cd8 ffffffff81092bee [ 982.226349] 0000000000000008 ffffffff82924260 ffff8800001d7d30 ffffffff81ab8252 [ 982.233988] Call Trace: [ 982.236555] [] nmi_raise_cpu_backtrace+0x5e/0x80 [ 982.242989] [] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae [ 982.250455] [] ? print_lock+0xa8/0xab [ 982.255883] [] ? irq_force_complete_move+0x330/0x330 [ 982.262724] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 982.269815] [] watchdog.cold+0xd3/0xee [ 982.275340] [] ? watchdog+0xac/0xa00 [ 982.280797] [] ? reset_hung_task_detector+0x20/0x20 [ 982.287850] [] kthread+0x273/0x310 [ 982.293062] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.299726] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.306022] [] ? finish_task_switch+0x1e1/0x660 [ 982.312343] [] ? finish_task_switch+0x1b3/0x660 [ 982.318721] [] ? __schedule+0x7af/0x1ee0 [ 982.324465] [] ? __schedule+0x7a3/0x1ee0 [ 982.330676] [] ? __schedule+0x7af/0x1ee0 [ 982.336365] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.343040] [] ret_from_fork+0x55/0x80 [ 982.348666] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.355372] Code: 00 c3 5f ff 80 e6 10 75 e1 41 c1 e5 18 44 89 2c 25 10 c3 5f ff 44 89 fa 09 da 80 cf 04 41 83 ff 02 0f 44 d3 89 14 25 00 c3 5f ff <41> f7 c4 00 02 00 00 75 1e 4c 89 e7 57 9d 0f 1f 44 00 00 e8 f1 [ 982.374460] Kernel panic - not syncing: hung_task: blocked tasks [ 982.380603] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #17 [ 982.387067] 0000000000000000 c1b9d752c58ecc4b ffff8800001d7c60 ffffffff81aad1a1 [ 982.395142] ffff8800b4e24740 ffffffff82872120 dffffc0000000000 0000000000000003 [ 982.403174] 00000000003fff9e ffff8800001d7d40 ffffffff813a48c2 0000000041b58ab3 [ 982.411177] Call Trace: [ 982.413757] [] dump_stack+0xc1/0x120 [ 982.419115] [] panic+0x1b9/0x37b [ 982.424291] [] ? add_taint.cold+0x16/0x16 [ 982.430068] [] ? find_next_bit+0x44/0x50 [ 982.435781] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.443068] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.450422] [] watchdog.cold+0xe4/0xee [ 982.456003] [] ? watchdog+0xac/0xa00 [ 982.461354] [] ? reset_hung_task_detector+0x20/0x20 [ 982.467999] [] kthread+0x273/0x310 [ 982.473169] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.480005] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.486305] [] ? finish_task_switch+0x1e1/0x660 [ 982.492741] [] ? finish_task_switch+0x1b3/0x660 [ 982.499092] [] ? __schedule+0x7af/0x1ee0 [ 982.504808] [] ? __schedule+0x7a3/0x1ee0 [ 982.510501] [] ? __schedule+0x7af/0x1ee0 [ 982.516192] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.522847] [] ret_from_fork+0x55/0x80 [ 982.528379] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.535492] Kernel Offset: disabled [ 982.539124] Rebooting in 86400 seconds..