INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.0.50' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 722.207602] INFO: task syz-executor950:3844 blocked for more than 120 seconds. [ 722.214999] Not tainted 4.4.128-gbd23e3a #20 [ 722.219943] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.227895] syz-executor950 D ffff8800ba8dfa68 27856 3844 3843 0x00000000 [ 722.235377] ffff8800ba8dfa68 0000000000000000 ffff8801d8eb38e0 ffffed003b1d671b [ 722.243411] ffff8801d8eb3000 ffff8801db21fdb8 ffff8801db21fde0 ffff8801db21f4d8 [ 722.251420] ffff8801db21f4c0 ffff8800b2396000 ffff8801d8eb3000 0000000000000000 [ 722.259472] Call Trace: [ 722.262211] [] schedule+0x7a/0x1b0 [ 722.267378] [] schedule_preempt_disabled+0x13/0x20 [ 722.273957] [] mutex_lock_nested+0x307/0x850 [ 722.280081] [] ? lo_ioctl+0x8b/0x1ad0 [ 722.285507] [] ? mutex_lock_killable_nested+0x980/0x980 [ 722.292619] [] ? avc_has_extended_perms+0x5b7/0xf10 [ 722.299285] [] ? avc_has_extended_perms+0x6f6/0xf10 [ 722.305923] [] ? avc_has_extended_perms+0xe1/0xf10 [ 722.312591] [] ? putname+0xdb/0x110 [ 722.317963] [] lo_ioctl+0x8b/0x1ad0 [ 722.323241] [] ? SyS_openat+0xc/0x40 [ 722.328716] [] ? avc_ss_reset+0x110/0x110 [ 722.334487] [] ? loop_probe+0x180/0x180 [ 722.340218] [] blkdev_ioctl+0x7b8/0x19c0 [ 722.345911] [] ? blkpg_ioctl+0x900/0x900 [ 722.351633] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 722.358656] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 722.365469] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 722.372440] [] ? debug_check_no_obj_freed+0x2ec/0x940 [ 722.379292] [] ? quarantine_put+0xda/0x180 [ 722.385150] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 722.391982] [] ? check_preemption_disabled+0x3b/0x170 [ 722.398831] [] block_ioctl+0xde/0x120 [ 722.404253] [] ? blkdev_read_iter+0x170/0x170 [ 722.410395] [] do_vfs_ioctl+0x63f/0xf40 [ 722.415993] [] ? kmem_cache_free+0x2b4/0x340 [ 722.422045] [] ? ioctl_preallocate+0x1f0/0x1f0 [ 722.428265] [] ? putname+0xe0/0x110 [ 722.433515] [] ? do_sys_open+0x21c/0x610 [ 722.439211] [] ? filp_open+0x70/0x70 [ 722.444660] [] ? task_work_run+0x152/0x190 [ 722.450591] [] ? security_file_ioctl+0x8f/0xc0 [ 722.456809] [] SyS_ioctl+0x8f/0xc0 [ 722.461996] [] entry_SYSCALL_64_fastpath+0x22/0x9e [ 722.468791] 1 lock held by syz-executor950/3844: [ 722.473557] #0: (&lo->lo_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x8b/0x1ad0 [ 722.483037] Sending NMI to all CPUs: [ 722.488118] NMI backtrace for cpu 0 [ 722.491722] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.128-gbd23e3a #20 [ 722.498736] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.508080] task: ffffffff84417840 task.stack: ffffffff84400000 [ 722.514108] RIP: 0010:[] [] native_safe_halt+0x6/0x10 [ 722.522496] RSP: 0018:ffffffff84407dc8 EFLAGS: 00000246 [ 722.527941] RAX: 0000000000000007 RBX: ffffffff84a05868 RCX: 0000000000000000 [ 722.535185] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff8441811c [ 722.542457] RBP: ffffffff84407dc8 R08: 0000000000000000 R09: 0000000000000000 [ 722.549724] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 722.556965] R13: 0000000000000000 R14: fffffbfff074890c R15: ffffffff84a05868 [ 722.564253] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 722.572494] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 722.578391] CR2: 00000000019a9f10 CR3: 00000000b656e000 CR4: 0000000000160670 [ 722.585723] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 722.593086] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 722.600350] Stack: [ 722.602478] ffffffff84407e00 ffffffff81025da5 ffffffff84408000 0000000000000000 [ 722.610022] 0000000000000000 fffffbfff074890c ffffffff84a05868 ffffffff84407e10 [ 722.617555] ffffffff810272f0 ffffffff84407e28 ffffffff8121b9c7 dffffc0000000000 [ 722.625057] Call Trace: [ 722.627633] [] default_idle+0x55/0x3c0 [ 722.633145] [] arch_cpu_idle+0x10/0x20 [ 722.638698] [] default_idle_call+0x57/0x70 [ 722.644553] [] cpu_startup_entry+0x6af/0x780 [ 722.650610] [] ? call_cpuidle+0xe0/0xe0 [ 722.656205] [] rest_init+0x188/0x18e [ 722.661564] [] start_kernel+0x6b3/0x6e7 [ 722.667243] [] ? thread_stack_cache_init+0xb/0xb [ 722.673653] [] ? early_idt_handler_array+0x120/0x120 [ 722.680483] [] ? early_idt_handler_array+0x120/0x120 [ 722.687203] [] x86_64_start_reservations+0x29/0x2b [ 722.693775] [] x86_64_start_kernel+0x13f/0x162 [ 722.700000] Code: 00 00 00 00 00 55 48 89 e5 fa 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 66 0f 1f 84 [ 722.718987] NMI backtrace for cpu 1 [ 722.722590] CPU: 1 PID: 492 Comm: khungtaskd Not tainted 4.4.128-gbd23e3a #20 [ 722.729863] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.739371] task: ffff8800bb956000 task.stack: ffff8801d8f08000 [ 722.745399] RIP: 0010:[] [] flat_send_IPI_mask+0xf6/0x1a0 [ 722.754159] RSP: 0018:ffff8801d8f0fcc8 EFLAGS: 00000046 [ 722.759600] RAX: 0000000003000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 722.766845] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fb300 [ 722.774117] RBP: ffff8801d8f0fcf0 R08: 0000000000000001 R09: 0000000000000000 [ 722.781381] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246 [ 722.788655] R13: 0000000000000003 R14: 0000000000000002 R15: ffffffff8446f7a0 [ 722.795898] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 722.804356] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 722.810264] CR2: 00007f820ea05000 CR3: 00000000b656e000 CR4: 0000000000160670 [ 722.817535] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 722.824779] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 722.832052] Stack: [ 722.834174] ffffffff8446f7a0 ffffffff84a187a0 0000000000000007 fffffbfff0942ba4 [ 722.841708] 0000000000000040 ffff8801d8f0fd10 ffffffff810b5d21 ffffffff83c0b0e0 [ 722.849234] 0000000000000003 ffff8801d8f0fd68 ffffffff81e18b43 ffffffff8140da9f [ 722.856738] Call Trace: [ 722.859327] [] nmi_raise_cpu_backtrace+0x61/0x80 [ 722.865703] [] nmi_trigger_all_cpu_backtrace.cold.4+0x70/0xad [ 722.873237] [] ? print_lock+0x9f/0xa2 [ 722.878677] [] ? irq_force_complete_move+0x350/0x350 [ 722.885399] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 722.892418] [] watchdog.cold.1+0xd3/0xee [ 722.898174] [] ? watchdog+0xb0/0x9a0 [ 722.903506] [] kthread+0x268/0x300 [ 722.908682] [] ? reset_hung_task_detector+0x20/0x20 [ 722.915317] [] ? kthread_create_on_node+0x400/0x400 [ 722.921976] [] ? kthread_create_on_node+0x400/0x400 [ 722.928631] [] ret_from_fork+0x55/0x80 [ 722.934135] [] ? kthread_create_on_node+0x400/0x400 [ 722.940797] Code: b3 5f ff f6 c4 10 75 e2 44 89 e8 c1 e0 18 89 04 25 10 b3 5f ff 44 89 f2 09 da 80 cf 04 41 83 fe 02 0f 44 d3 89 14 25 00 b3 5f ff <41> f7 c4 00 02 00 00 75 1a 4c 89 e7 57 9d 0f 1f 44 00 00 e8 82 [ 722.959998] Kernel panic - not syncing: hung_task: blocked tasks [ 722.966162] CPU: 0 PID: 492 Comm: khungtaskd Not tainted 4.4.128-gbd23e3a #20 [ 722.973419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.982749] 0000000000000000 46d1d53466310103 ffff8801d8f0fcb8 ffffffff81e0daad [ 722.990736] ffffffff83a835c0 0000000000000003 7fffffffffffffff 00000000003fff90 [ 722.998729] dffffc0000000000 ffff8801d8f0fd78 ffffffff81409eb4 0000000041b58ab3 [ 723.006718] Call Trace: [ 723.009285] [] dump_stack+0xc1/0x124 [ 723.014624] [] panic+0x19e/0x38d [ 723.019611] [] ? add_taint.cold.4+0x16/0x16 [ 723.026000] [] ? nmi_trigger_all_cpu_backtrace+0x3e6/0x488 [ 723.033247] [] ? nmi_trigger_all_cpu_backtrace+0x395/0x488 [ 723.040490] [] ? nmi_trigger_all_cpu_backtrace+0x395/0x488 [ 723.047736] [] watchdog.cold.1+0xe4/0xee [ 723.053421] [] ? watchdog+0xb0/0x9a0 [ 723.058759] [] kthread+0x268/0x300 [ 723.063923] [] ? reset_hung_task_detector+0x20/0x20 [ 723.070574] [] ? kthread_create_on_node+0x400/0x400 [ 723.077219] [] ? kthread_create_on_node+0x400/0x400 [ 723.083863] [] ret_from_fork+0x55/0x80 [ 723.089372] [] ? kthread_create_on_node+0x400/0x400 [ 723.096493] Dumping ftrace buffer: [ 723.100051] (ftrace buffer empty) [ 723.103735] Kernel Offset: disabled [ 723.107359] Rebooting in 86400 seconds..