Warning: Permanently added '10.128.0.174' (ECDSA) to the list of known hosts. executing program executing program executing program [ 717.743811] INFO: task syz-executor239:8097 blocked for more than 140 seconds. [ 717.751434] Not tainted 4.19.179-syzkaller #0 [ 717.756881] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.764943] syz-executor239 D28072 8097 8086 0x00000004 [ 717.770614] Call Trace: [ 717.773210] __schedule+0x887/0x2040 [ 717.777294] ? io_schedule_timeout+0x140/0x140 [ 717.781898] ? check_preemption_disabled+0x41/0x280 [ 717.787030] ? mark_held_locks+0xf0/0xf0 [ 717.791115] schedule+0x8d/0x1b0 [ 717.794575] schedule_timeout+0x92d/0xfe0 [ 717.798750] ? trace_hardirqs_off+0x64/0x200 [ 717.803184] ? usleep_range+0x170/0x170 [ 717.807270] ? try_to_wake_up+0x733/0x1050 [ 717.811528] ? wait_for_common+0x294/0x470 [ 717.815859] ? lock_downgrade+0x720/0x720 [ 717.820034] ? lock_acquire+0x170/0x3c0 [ 717.824079] ? wait_for_common+0x9e/0x470 [ 717.828303] ? _raw_spin_unlock_irq+0x24/0x80 [ 717.832808] wait_for_common+0x29c/0x470 [ 717.836975] ? __flush_work+0x37e/0x8b0 [ 717.840970] ? bit_wait_io_timeout+0x100/0x100 [ 717.845830] ? wake_up_q+0xe0/0xe0 [ 717.849383] ? _raw_spin_unlock_irq+0x24/0x80 [ 717.853962] __flush_work+0x4bb/0x8b0 [ 717.857801] ? alloc_unbound_pwq+0xc10/0xc10 [ 717.862411] ? flush_workqueue_prep_pwqs+0x570/0x570 [ 717.867626] ? _raw_spin_unlock_irq+0x5a/0x80 [ 717.872163] ? __flush_work+0x4cf/0x8b0 [ 717.876232] ? trace_hardirqs_off+0x64/0x200 [ 717.880687] ? __cancel_work_timer+0x3ba/0x590 [ 717.885351] __cancel_work_timer+0x412/0x590 [ 717.889974] ? try_to_grab_pending+0x6f0/0x6f0 [ 717.894655] ? lock_downgrade+0x720/0x720 [ 717.898878] ? lock_acquire+0x170/0x3c0 [ 717.902857] ? p9_fd_close+0x172/0x520 [ 717.908016] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 717.914186] p9_fd_close+0x29c/0x520 [ 717.917930] p9_client_create+0x901/0x12e0 [ 717.922175] ? p9_client_flush+0x490/0x490 [ 717.926527] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 717.931568] ? __lockdep_init_map+0x100/0x5a0 [ 717.936172] ? __raw_spin_lock_init+0x28/0x100 [ 717.940870] v9fs_session_init+0x1dd/0x1770 [ 717.945293] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 717.950397] ? v9fs_show_options+0x760/0x760 [ 717.954905] ? lock_acquire+0x170/0x3c0 [ 717.961517] ? check_preemption_disabled+0x41/0x280 [ 717.970924] ? v9fs_mount+0x54/0x910 [ 717.974755] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 717.979798] ? kmem_cache_alloc_trace+0x323/0x380 [ 717.984740] v9fs_mount+0x73/0x910 [ 717.988303] ? alloc_pages_current+0x19b/0x2a0 [ 717.992884] ? __lockdep_init_map+0x100/0x5a0 [ 717.997496] mount_fs+0xa3/0x310 [ 718.000910] vfs_kern_mount.part.0+0x68/0x470 [ 718.006035] do_mount+0x113c/0x2f10 [ 718.009851] ? do_raw_spin_unlock+0x171/0x230 [ 718.014436] ? check_preemption_disabled+0x41/0x280 [ 718.019484] ? copy_mount_string+0x40/0x40 [ 718.023863] ? copy_mount_options+0x59/0x380 [ 718.028348] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 718.033366] ? kmem_cache_alloc_trace+0x323/0x380 [ 718.038334] ? copy_mount_options+0x26f/0x380 [ 718.043039] ksys_mount+0xcf/0x130 [ 718.046669] __x64_sys_mount+0xba/0x150 [ 718.050688] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 718.055364] do_syscall_64+0xf9/0x620 [ 718.059196] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.064570] RIP: 0033:0x445c39 [ 718.067883] Code: Bad RIP value. [ 718.071241] RSP: 002b:00007f949bc47308 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 718.079053] RAX: ffffffffffffffda RBX: 00000000004cb518 RCX: 0000000000445c39 [ 718.086421] RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000 [ 718.093773] RBP: 00000000004cb510 R08: 00000000200001c0 R09: 0000000000000000 [ 718.101169] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb51c [ 718.108547] R13: 000000000049b07c R14: 64663d736e617274 R15: 0000000000022000 [ 718.115974] [ 718.115974] Showing all locks held in the system: [ 718.122335] 2 locks held by kworker/0:1/14: [ 718.126726] #0: 0000000094edc173 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 [ 718.136166] #1: 00000000335ecea8 ((work_completion)(&m->rq)){+.+.}, at: process_one_work+0x79c/0x1570 [ 718.145817] 1 lock held by khungtaskd/1567: [ 718.150141] #0: 00000000aa0a327e (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 718.158906] [ 718.160552] ============================================= [ 718.160552] [ 718.167635] NMI backtrace for cpu 0 [ 718.171284] CPU: 0 PID: 1567 Comm: khungtaskd Not tainted 4.19.179-syzkaller #0 [ 718.178722] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.188077] Call Trace: [ 718.190663] dump_stack+0x1fc/0x2ef [ 718.194402] nmi_cpu_backtrace.cold+0x63/0xa2 [ 718.198909] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.203407] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 718.208687] watchdog+0x991/0xe60 [ 718.212141] ? reset_hung_task_detector+0x30/0x30 [ 718.216984] kthread+0x33f/0x460 [ 718.220342] ? kthread_park+0x180/0x180 [ 718.224335] ret_from_fork+0x24/0x30 [ 718.228183] Sending NMI from CPU 0 to CPUs 1: [ 718.233496] NMI backtrace for cpu 1 [ 718.233503] CPU: 1 PID: 4691 Comm: systemd-journal Not tainted 4.19.179-syzkaller #0 [ 718.233509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.233513] RIP: 0010:unwind_next_frame+0x231/0x1c60 [ 718.233528] Code: ff 39 d6 0f 83 df 10 00 00 48 ba 00 00 00 00 00 fc ff df 41 89 f0 4a 8d 3c 85 f8 27 17 8c 49 89 f9 49 c1 e9 03 45 0f b6 0c 11 <48> 89 fa 83 e2 07 83 c2 03 44 38 ca 7c 32 45 84 c9 74 2d 4c 89 44 [ 718.233532] RSP: 0018:ffff8880a0effa08 EFLAGS: 00000a07 [ 718.233539] RAX: 0000000000000000 RBX: 1ffff110141dff49 RCX: ffffffff8197d35f [ 718.233544] RDX: dffffc0000000000 RSI: 00000000000097d3 RDI: ffffffff8c198744 [ 718.233548] RBP: 0000000000000001 R08: 00000000000097d3 R09: 0000000000000000 [ 718.233553] R10: 0000000000074071 R11: 0000000000000001 R12: ffff8880a0effb38 [ 718.233558] R13: ffff8880a0effb25 R14: ffff8880a0effb28 R15: ffff8880a0effaf0 [ 718.233562] FS: 00007f7ba8b8d8c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 718.233567] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 718.233571] CR2: 00007f7ba5f61578 CR3: 00000000a0ce8000 CR4: 00000000001406e0 [ 718.233576] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 718.233581] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 718.233584] Call Trace: [ 718.233587] ? kmem_cache_alloc+0x110/0x370 [ 718.233590] ? should_fail+0x142/0x7b0 [ 718.233594] ? deref_stack_reg+0x1d0/0x1d0 [ 718.233597] ? kmem_cache_alloc+0x110/0x370 [ 718.233600] __save_stack_trace+0x9f/0x190 [ 718.233604] ? __lock_acquire+0x6de/0x3ff0 [ 718.233607] ? kmem_cache_alloc+0x110/0x370 [ 718.233611] kasan_kmalloc+0xeb/0x160 [ 718.233615] ? kmem_cache_alloc+0x110/0x370 [ 718.233619] ? seccomp_run_filters+0x18c/0x590 [ 718.233623] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 718.233627] ? __put_seccomp_filter+0xa0/0xa0 [ 718.233631] ? cache_alloc_refill+0x2f8/0x340 [ 718.233635] ? lock_downgrade+0x720/0x720 [ 718.233639] ? do_raw_spin_lock+0xcb/0x220 [ 718.233643] ? do_raw_spin_unlock+0x171/0x230 [ 718.233646] ? _raw_spin_unlock+0x29/0x40 [ 718.233650] ? cache_alloc_refill+0x2f8/0x340 [ 718.233654] ? kmem_cache_alloc+0x2b1/0x370 [ 718.233658] kmem_cache_alloc+0x110/0x370 [ 718.233662] getname_flags+0xce/0x590 [ 718.233665] do_sys_open+0x26c/0x520 [ 718.233669] ? filp_open+0x70/0x70 [ 718.233673] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 718.233677] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.233681] ? do_syscall_64+0x21/0x620 [ 718.233685] do_syscall_64+0xf9/0x620 [ 718.233689] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.233692] RIP: 0033:0x7f7ba811d840 [ 718.233703] Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 [ 718.233707] RSP: 002b:00007ffd2aa1a738 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 718.233716] RAX: ffffffffffffffda RBX: 00007ffd2aa1aa40 RCX: 00007f7ba811d840 [ 718.233721] RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 00005564bef656d0 [ 718.233726] RBP: 000000000000000d R08: 000000000000ffc0 R09: 00000000ffffffff [ 718.233732] R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff [ 718.233737] R13: 00005564bef58040 R14: 00007ffd2aa1aa00 R15: 00005564bef65720 [ 718.233967] Kernel panic - not syncing: hung_task: blocked tasks [ 718.574656] CPU: 0 PID: 1567 Comm: khungtaskd Not tainted 4.19.179-syzkaller #0 [ 718.582195] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.591912] Call Trace: [ 718.594513] dump_stack+0x1fc/0x2ef [ 718.598127] panic+0x26a/0x50e [ 718.601590] ? __warn_printk+0xf3/0xf3 [ 718.605487] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 718.610663] ? cpumask_next+0x3c/0x40 [ 718.614447] ? printk_safe_flush+0xd6/0x120 [ 718.618947] ? watchdog+0x991/0xe60 [ 718.622645] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 718.628127] watchdog+0x9a2/0xe60 [ 718.631599] ? reset_hung_task_detector+0x30/0x30 [ 718.638544] kthread+0x33f/0x460 [ 718.642054] ? kthread_park+0x180/0x180 [ 718.647907] ret_from_fork+0x24/0x30 [ 718.652609] Kernel Offset: disabled [ 718.657038] Rebooting in 86400 seconds..