Warning: Permanently added '10.128.0.247' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 557.821182][ T8424] nbd: nbd0 already in use [ 721.413757][ T1641] INFO: task systemd-udevd:8423 blocked for more than 143 seconds. [ 721.421674][ T1641] Tainted: G W 5.13.0-syzkaller #0 [ 721.429636][ T1641] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.438459][ T1641] task:systemd-udevd state:D stack:25776 pid: 8423 ppid: 4859 flags:0x00004000 [ 721.447904][ T1641] Call Trace: [ 721.451379][ T1641] __schedule+0xc07/0x11f0 [ 721.456354][ T1641] ? __sched_text_start+0x8/0x8 [ 721.461217][ T1641] ? do_raw_spin_lock+0x151/0x8e0 [ 721.466574][ T1641] ? do_raw_spin_unlock+0x134/0x8a0 [ 721.471776][ T1641] schedule+0x14b/0x210 [ 721.476206][ T1641] schedule_preempt_disabled+0xf/0x20 [ 721.481723][ T1641] __mutex_lock_common+0x116f/0x3770 [ 721.487428][ T1641] ? del_gendisk+0x86/0x610 [ 721.492801][ T1641] ? mutex_lock_io_nested+0x60/0x60 [ 721.498334][ T1641] ? kernfs_put+0x481/0x490 [ 721.503120][ T1641] ? kfree_const+0x26/0x40 [ 721.507961][ T1641] mutex_lock_nested+0x1a/0x20 [ 721.512765][ T1641] del_gendisk+0x86/0x610 [ 721.517497][ T1641] nbd_put+0x8d/0x170 [ 721.521593][ T1641] ? nbd_open+0xb10/0xb10 [ 721.526201][ T1641] blkdev_put+0x470/0x810 [ 721.530593][ T1641] ? read_lock_is_recursive+0x10/0x10 [ 721.536278][ T1641] ? __lock_acquire+0x6100/0x6100 [ 721.541318][ T1641] blkdev_close+0x7a/0xa0 [ 721.546008][ T1641] ? blkdev_open+0x2c0/0x2c0 [ 721.550614][ T1641] __fput+0x352/0x7b0 [ 721.554918][ T1641] task_work_run+0x146/0x1c0 [ 721.559605][ T1641] exit_to_user_mode_prepare+0x201/0x220 [ 721.565543][ T1641] ? trace_irq_disable_rcuidle+0x11/0x170 [ 721.571490][ T1641] syscall_exit_to_user_mode+0x26/0x60 [ 721.577353][ T1641] do_syscall_64+0x4c/0xb0 [ 721.581902][ T1641] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 721.588255][ T1641] RIP: 0033:0x7fbc7200f270 [ 721.592789][ T1641] RSP: 002b:00007ffca87ce908 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 721.601602][ T1641] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007fbc7200f270 [ 721.610086][ T1641] RDX: 000000000aba9500 RSI: 0000000000000000 RDI: 0000000000000007 [ 721.618326][ T1641] RBP: 00007fbc72ec9710 R08: 000000000000004a R09: 0000000000000008 [ 721.626599][ T1641] R10: 00005640bf30ff58 R11: 0000000000000246 R12: 0000000000000000 [ 721.634673][ T1641] R13: 00005640bf324680 R14: 0000000000000003 R15: 000000000000000e [ 721.642678][ T1641] INFO: task syz-executor861:8425 blocked for more than 143 seconds. [ 721.651487][ T1641] Tainted: G W 5.13.0-syzkaller #0 [ 721.658678][ T1641] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.667596][ T1641] task:syz-executor861 state:D stack:27216 pid: 8425 ppid: 8420 flags:0x00004004 [ 721.677089][ T1641] Call Trace: [ 721.680484][ T1641] __schedule+0xc07/0x11f0 [ 721.685206][ T1641] ? __sched_text_start+0x8/0x8 [ 721.690082][ T1641] ? do_raw_spin_lock+0x151/0x8e0 [ 721.695385][ T1641] ? __might_sleep+0x100/0x100 [ 721.700324][ T1641] ? stack_trace_save+0x1e0/0x1e0 [ 721.705679][ T1641] ? do_raw_spin_unlock+0x134/0x8a0 [ 721.710903][ T1641] schedule+0x14b/0x210 [ 721.715339][ T1641] schedule_preempt_disabled+0xf/0x20 [ 721.720840][ T1641] __mutex_lock_common+0x116f/0x3770 [ 721.726408][ T1641] ? nbd_genl_connect+0x24f/0x1aa0 [ 721.731745][ T1641] ? mutex_lock_io_nested+0x60/0x60 [ 721.737257][ T1641] ? safesetid_security_capable+0xad/0x1d0 [ 721.743381][ T1641] ? security_capable+0xb1/0xd0 [ 721.748625][ T1641] mutex_lock_nested+0x1a/0x20 [ 721.753498][ T1641] nbd_genl_connect+0x24f/0x1aa0 [ 721.758686][ T1641] ? __nla_validate_parse+0x1b3c/0x24f0 [ 721.764747][ T1641] ? genl_family_rcv_msg_attrs_parse+0xa1/0x290 [ 721.771181][ T1641] ? trace_raw_output_nbd_send_request+0xe0/0xe0 [ 721.777556][ T1641] ? __nla_validate+0x50/0x50 [ 721.782334][ T1641] ? rcu_lock_release+0x5/0x20 [ 721.787213][ T1641] ? trace_lock_release+0x4f/0x140 [ 721.792324][ T1641] ? __nla_parse+0x3c/0x50 [ 721.796935][ T1641] ? genl_family_rcv_msg_attrs_parse+0x1cd/0x290 [ 721.803362][ T1641] genl_rcv_msg+0xfb4/0x13c0 [ 721.808091][ T1641] ? genl_bind+0x360/0x360 [ 721.812596][ T1641] ? unwind_get_return_address+0x48/0x80 [ 721.818338][ T1641] ? arch_stack_walk+0x98/0xe0 [ 721.823137][ T1641] ? trace_lock_acquire+0x59/0x180 [ 721.828294][ T1641] ? rcu_lock_acquire+0x5/0x30 [ 721.833133][ T1641] ? trace_raw_output_nbd_send_request+0xe0/0xe0 [ 721.839494][ T1641] ? trace_lock_acquire+0x59/0x180 [ 721.844647][ T1641] netlink_rcv_skb+0x1f0/0x460 [ 721.849410][ T1641] ? genl_bind+0x360/0x360 [ 721.853922][ T1641] ? netlink_ack+0xb70/0xb70 [ 721.858518][ T1641] ? __down_read_common+0x1b0/0x450 [ 721.863746][ T1641] ? up_read_non_owner+0x1c0/0x1c0 [ 721.868850][ T1641] ? netlink_deliver_tap+0x130/0x840 [ 721.874172][ T1641] genl_rcv+0x24/0x40 [ 721.878153][ T1641] netlink_unicast+0x7de/0x9b0 [ 721.882904][ T1641] ? netlink_detachskb+0xa0/0xa0 [ 721.887875][ T1641] ? __virt_addr_valid+0x21b/0x2d0 [ 721.892987][ T1641] ? __phys_addr_symbol+0x2b/0x70 [ 721.898049][ T1641] ? __check_object_size+0x2f3/0x3f0 [ 721.903393][ T1641] ? bpf_lsm_netlink_send+0x5/0x10 [ 721.908625][ T1641] netlink_sendmsg+0xaa6/0xe90 [ 721.913611][ T1641] ? netlink_getsockopt+0xa60/0xa60 [ 721.918827][ T1641] ? __might_fault+0xb8/0x110 [ 721.924128][ T1641] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 721.929443][ T1641] ? security_socket_sendmsg+0x9d/0xb0 [ 721.934981][ T1641] ? netlink_getsockopt+0xa60/0xa60 [ 721.940199][ T1641] ____sys_sendmsg+0x5a2/0x900 [ 721.945111][ T1641] ? iovec_from_user+0x359/0x390 [ 721.950118][ T1641] ? __sys_sendmsg_sock+0x30/0x30 [ 721.955172][ T1641] __sys_sendmsg+0x319/0x400 [ 721.959759][ T1641] ? ____sys_sendmsg+0x900/0x900 [ 721.964722][ T1641] ? signal_setup_done+0x3aa/0x4f0 [ 721.969920][ T1641] ? trace_lock_acquire+0x59/0x180 [ 721.975059][ T1641] ? __context_tracking_exit+0x7a/0xd0 [ 721.980517][ T1641] ? trace_lock_release+0x4f/0x140 [ 721.985659][ T1641] ? lock_release+0x81/0x7b0 [ 721.990244][ T1641] ? lock_release+0x81/0x7b0 [ 721.995030][ T1641] ? read_lock_is_recursive+0x10/0x10 [ 722.000397][ T1641] ? read_lock_is_recursive+0x10/0x10 [ 722.005976][ T1641] ? __lock_acquire+0x6100/0x6100 [ 722.011200][ T1641] ? arch_do_signal_or_restart+0x585/0x6d0 [ 722.017309][ T1641] ? __lock_acquire+0x6100/0x6100 [ 722.022424][ T1641] ? account_other_time+0x63/0x280 [ 722.027780][ T1641] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 722.033801][ T1641] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 722.039792][ T1641] do_syscall_64+0x3d/0xb0 [ 722.044277][ T1641] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 722.050173][ T1641] RIP: 0033:0x4414f9 [ 722.054095][ T1641] RSP: 002b:00007fff264c11e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 722.062505][ T1641] RAX: ffffffffffffffda RBX: 00000000000882dd RCX: 00000000004414f9 [ 722.070518][ T1641] RDX: 0000000000000800 RSI: 0000000020000340 RDI: 0000000000000004 [ 722.078528][ T1641] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 722.086620][ T1641] R10: 00007fff264c11f0 R11: 0000000000000246 R12: 00007fff264c121c [ 722.095237][ T1641] R13: 431bde82d7b634db R14: 00007fff264c1230 R15: 00000000004004a0 [ 722.103233][ T1641] INFO: lockdep is turned off. [ 722.108123][ T1641] NMI backtrace for cpu 1 [ 722.112444][ T1641] CPU: 1 PID: 1641 Comm: khungtaskd Tainted: G W 5.13.0-syzkaller #0 [ 722.121970][ T1641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.132014][ T1641] Call Trace: [ 722.135287][ T1641] dump_stack_lvl+0x1d3/0x29f [ 722.140013][ T1641] ? show_regs_print_info+0x12/0x12 [ 722.145191][ T1641] ? log_buf_vmcoreinfo_setup+0x498/0x498 [ 722.150924][ T1641] ? printk+0xc0/0x108 [ 722.154984][ T1641] ? hw_nmi_get_sample_period+0x40/0x60 [ 722.160996][ T1641] nmi_cpu_backtrace+0x16c/0x190 [ 722.165922][ T1641] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 722.172322][ T1641] nmi_trigger_cpumask_backtrace+0x191/0x2f0 [ 722.178281][ T1641] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 722.184327][ T1641] watchdog+0xd06/0xd50 [ 722.188510][ T1641] kthread+0x453/0x480 [ 722.192555][ T1641] ? hungtask_pm_notify+0x50/0x50 [ 722.197555][ T1641] ? kthread_blkcg+0xd0/0xd0 [ 722.202123][ T1641] ret_from_fork+0x1f/0x30 [ 722.206618][ T1641] Sending NMI from CPU 1 to CPUs 0: [ 722.212301][ C0] NMI backtrace for cpu 0 [ 722.212308][ C0] CPU: 0 PID: 8402 Comm: kworker/0:3 Tainted: G W 5.13.0-syzkaller #0 [ 722.212313][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.212318][ C0] Workqueue: events_power_efficient toggle_allocation_gate [ 722.212326][ C0] RIP: 0010:kasan_check_range+0x4d/0x2f0 [ 722.212331][ C0] Code: 48 c1 eb 2f 81 fb fe ff 01 00 0f 86 7a 02 00 00 49 89 fc 49 c1 ec 03 49 b8 00 00 00 00 00 fc ff df 4f 8d 0c 04 4c 8d 54 37 ff <49> c1 ea 03 49 bd 01 00 00 00 00 fc ff df 4d 01 ea 4d 89 d6 4d 29 [ 722.212337][ C0] RSP: 0018:ffffc90001c9f788 EFLAGS: 00000806 [ 722.212343][ C0] RAX: ffff8880300f0001 RBX: 000000000001ffff RCX: ffffffff812de007 [ 722.212347][ C0] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff8fa3b199 [ 722.212351][ C0] RBP: ffffc90001c9f990 R08: dffffc0000000000 R09: fffffbfff1f47633 [ 722.212355][ C0] R10: ffffffff8fa3b199 R11: 0000000000000000 R12: 1ffffffff1f47633 [ 722.212359][ C0] R13: dffffc0000000000 R14: ffffffff8fa3b199 R15: 00002aaaaaaabd81 [ 722.212363][ C0] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 722.212367][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 722.212371][ C0] CR2: 00007f42e3bca000 CR3: 00000001400d4000 CR4: 00000000001506f0 [ 722.212375][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 722.212378][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 722.212382][ C0] Call Trace: [ 722.212384][ C0] ? __text_poke+0x557/0x8c0 [ 722.212387][ C0] memcpy+0x25/0x60 [ 722.212389][ C0] __text_poke+0x557/0x8c0 [ 722.212392][ C0] ? __kmalloc+0x141/0x390 [ 722.212395][ C0] ? text_poke+0x80/0x80 [ 722.212397][ C0] ? text_poke_sync+0x20/0x20 [ 722.212400][ C0] ? smp_call_function_many+0x30/0x30 [ 722.212403][ C0] ? perf_event_bpf_output+0x210/0x210 [ 722.212406][ C0] ? preempt_schedule_thunk+0x16/0x18 [ 722.212409][ C0] ? cpumask_next+0x20/0x100 [ 722.212412][ C0] ? on_each_cpu_cond_mask+0x55/0x80 [ 722.212415][ C0] ? text_poke_sync+0x20/0x20 [ 722.212417][ C0] ? text_poke_sync+0x20/0x20 [ 722.212420][ C0] ? __kmalloc+0x141/0x390 [ 722.212423][ C0] text_poke_bp_batch+0x6b0/0x940 [ 722.212426][ C0] ? text_poke_loc_init+0x420/0x420 [ 722.212429][ C0] ? process_one_work+0x33f/0x10c0 [ 722.212432][ C0] ? arch_jump_label_transform_queue+0x7c/0xd0 [ 722.212435][ C0] ? __jump_label_update+0x32c/0x350 [ 722.212438][ C0] text_poke_finish+0x16/0x30 [ 722.212440][ C0] arch_jump_label_transform_apply+0x13/0x20 [ 722.212444][ C0] static_key_enable_cpuslocked+0x12d/0x250 [ 722.212447][ C0] static_key_enable+0x16/0x20 [ 722.212450][ C0] toggle_allocation_gate+0xbf/0x440 [ 722.212452][ C0] ? kfence_protect+0x230/0x230 [ 722.212455][ C0] ? do_raw_spin_unlock+0x134/0x8a0 [ 722.212458][ C0] ? __lock_acquire+0x6100/0x6100 [ 722.212461][ C0] ? _raw_spin_lock_irqsave+0xbf/0x100 [ 722.212464][ C0] ? print_irqtrace_events+0x220/0x220 [ 722.212467][ C0] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 722.212470][ C0] ? do_raw_spin_unlock+0x134/0x8a0 [ 722.212473][ C0] ? _raw_spin_unlock_irq+0x1f/0x40 [ 722.212476][ C0] process_one_work+0x833/0x10c0 [ 722.212479][ C0] ? worker_detach_from_pool+0x260/0x260 [ 722.212483][ C0] ? _raw_spin_lock_irqsave+0x100/0x100 [ 722.212486][ C0] ? kthread_data+0x4d/0xc0 [ 722.212489][ C0] ? wq_worker_running+0x8b/0x140 [ 722.212492][ C0] worker_thread+0xac1/0x1320 [ 722.212495][ C0] ? __kthread_parkme+0x166/0x1c0 [ 722.212498][ C0] kthread+0x453/0x480 [ 722.212500][ C0] ? rcu_lock_release+0x20/0x20 [ 722.212503][ C0] ? kthread_blkcg+0xd0/0xd0 [ 722.212506][ C0] ret_from_fork+0x1f/0x30 [ 722.215058][ T1641] Kernel panic - not syncing: hung_task: blocked tasks [ 722.580514][ T1641] CPU: 1 PID: 1641 Comm: khungtaskd Tainted: G W 5.13.0-syzkaller #0 [ 722.589868][ T1641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.599900][ T1641] Call Trace: [ 722.603165][ T1641] dump_stack_lvl+0x1ae/0x29f [ 722.607915][ T1641] ? show_regs_print_info+0x12/0x12 [ 722.613094][ T1641] ? log_buf_vmcoreinfo_setup+0x498/0x498 [ 722.618879][ T1641] ? do_raw_spin_unlock+0x134/0x8a0 [ 722.624058][ T1641] panic+0x2e1/0x850 [ 722.628035][ T1641] ? _raw_spin_unlock+0x40/0x40 [ 722.632863][ T1641] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 722.638994][ T1641] ? nmi_panic+0x90/0x90 [ 722.643227][ T1641] ? preempt_schedule_thunk+0x16/0x18 [ 722.648645][ T1641] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 722.654773][ T1641] ? nmi_trigger_cpumask_backtrace+0x29b/0x2f0 [ 722.661165][ T1641] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2f0 [ 722.667382][ T1641] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 722.673434][ T1641] watchdog+0xd46/0xd50 [ 722.677583][ T1641] kthread+0x453/0x480 [ 722.681628][ T1641] ? hungtask_pm_notify+0x50/0x50 [ 722.686720][ T1641] ? kthread_blkcg+0xd0/0xd0 [ 722.691297][ T1641] ret_from_fork+0x1f/0x30 [ 722.697202][ T1641] Kernel Offset: disabled [ 722.701591][ T1641] Rebooting in 86400 seconds..