[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.5' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 484.321846][ T5] Bluetooth: hci0: command 0x0409 tx timeout [ 486.401503][ T5] Bluetooth: hci0: command 0x041b tx timeout [ 488.481231][ T5] Bluetooth: hci0: command 0x040f tx timeout [ 490.560917][ T5] Bluetooth: hci0: command 0x0419 tx timeout [ 492.640611][ T5] Bluetooth: hci0: command 0x0405 tx timeout [ 605.587140][ T5] Bluetooth: hci0: command 0x0406 tx timeout [ 716.138072][ T26] INFO: task krfcommd:2893 blocked for more than 143 seconds. [ 716.145696][ T26] Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 [ 716.153571][ T26] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.162358][ T26] task:krfcommd state:D stack:29592 pid: 2893 ppid: 2 flags:0x00004000 [ 716.171727][ T26] Call Trace: [ 716.175014][ T26] __schedule+0x93a/0x26f0 [ 716.180064][ T26] ? io_schedule_timeout+0x140/0x140 [ 716.185448][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 716.190819][ T26] schedule+0xd3/0x270 [ 716.195048][ T26] schedule_preempt_disabled+0xf/0x20 [ 716.200702][ T26] __mutex_lock+0xa46/0x1300 [ 716.205309][ T26] ? rfcomm_run+0x2ed/0x4a20 [ 716.210283][ T26] ? mutex_lock_io_nested+0x1160/0x1160 [ 716.215849][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.221045][ T26] rfcomm_run+0x2ed/0x4a20 [ 716.225482][ T26] ? find_held_lock+0x2d/0x110 [ 716.230549][ T26] ? rfcomm_check_accept+0x240/0x240 [ 716.235872][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.241134][ T26] ? __init_waitqueue_head+0xd0/0xd0 [ 716.246489][ T26] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 716.252605][ T26] ? lockdep_hardirqs_on+0x79/0x100 [ 716.257820][ T26] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 716.264181][ T26] ? __kthread_parkme+0x15f/0x220 [ 716.269297][ T26] ? rfcomm_check_accept+0x240/0x240 [ 716.274683][ T26] kthread+0x3e5/0x4d0 [ 716.278814][ T26] ? set_kthread_struct+0x130/0x130 [ 716.284044][ T26] ret_from_fork+0x1f/0x30 [ 716.288628][ T26] INFO: task syz-executor669:6620 blocked for more than 143 seconds. [ 716.296685][ T26] Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 [ 716.303812][ T26] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.312507][ T26] task:syz-executor669 state:D stack:27440 pid: 6620 ppid: 6588 flags:0x00004006 [ 716.321854][ T26] Call Trace: [ 716.325159][ T26] __schedule+0x93a/0x26f0 [ 716.329791][ T26] ? io_schedule_timeout+0x140/0x140 [ 716.335081][ T26] ? trace_hardirqs_on+0x5b/0x1c0 [ 716.340234][ T26] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 716.346055][ T26] schedule+0xd3/0x270 [ 716.350149][ T26] __lock_sock+0x13d/0x260 [ 716.354647][ T26] ? sock_omalloc+0x180/0x180 [ 716.359422][ T26] ? __rfcomm_dlc_close+0x162/0x8a0 [ 716.364702][ T26] ? finish_wait+0x270/0x270 [ 716.369315][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 716.374347][ T26] lock_sock_nested+0xf6/0x120 [ 716.379139][ T26] rfcomm_sk_state_change+0xb4/0x390 [ 716.384442][ T26] __rfcomm_dlc_close+0x1b6/0x8a0 [ 716.389517][ T26] rfcomm_dlc_close+0x1ea/0x240 [ 716.394376][ T26] __rfcomm_sock_close+0xac/0x260 [ 716.399452][ T26] rfcomm_sock_shutdown+0xe9/0x210 [ 716.404571][ T26] rfcomm_sock_release+0x5f/0x140 [ 716.409722][ T26] __sock_release+0xcd/0x280 [ 716.414395][ T26] sock_close+0x18/0x20 [ 716.418696][ T26] __fput+0x288/0x9f0 [ 716.422782][ T26] ? __sock_release+0x280/0x280 [ 716.427626][ T26] task_work_run+0xdd/0x1a0 [ 716.432187][ T26] do_exit+0xbae/0x2a30 [ 716.436449][ T26] ? lock_acquire+0x442/0x510 [ 716.441169][ T26] ? rcu_read_lock_sched_held+0xd/0x70 [ 716.446729][ T26] ? lock_release+0x522/0x720 [ 716.451439][ T26] ? mm_update_next_owner+0x7a0/0x7a0 [ 716.456816][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.461709][ T26] ? do_raw_spin_lock+0x120/0x2b0 [ 716.466755][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 716.471731][ T26] do_group_exit+0x125/0x310 [ 716.476468][ T26] get_signal+0x47f/0x2160 [ 716.480979][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 716.485849][ T26] ? wake_up_q+0xf0/0xf0 [ 716.490197][ T26] arch_do_signal_or_restart+0x2a9/0x1c40 [ 716.495984][ T26] ? rfcomm_sock_connect+0x15f/0x460 [ 716.501304][ T26] ? rfcomm_sock_getname+0x300/0x300 [ 716.506602][ T26] ? __sys_connect_file+0x4e/0x1a0 [ 716.511773][ T26] ? get_sigframe_size+0x10/0x10 [ 716.516727][ T26] ? __sys_connect_file+0x1a0/0x1a0 [ 716.521995][ T26] exit_to_user_mode_prepare+0x17d/0x290 [ 716.527726][ T26] syscall_exit_to_user_mode+0x19/0x60 [ 716.533226][ T26] do_syscall_64+0x42/0xb0 [ 716.537770][ T26] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 716.543870][ T26] RIP: 0033:0x445fe9 [ 716.547754][ T26] RSP: 002b:00007ffd638fe028 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 716.556202][ T26] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000445fe9 [ 716.564237][ T26] RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004 [ 716.572247][ T26] RBP: 0000000000000003 R08: 000000ff00000001 R09: 000000ff00000001 [ 716.580272][ T26] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000f682b8 [ 716.588285][ T26] R13: 0000000000000072 R14: 00007ffd638fe080 R15: 0000000000000003 [ 716.596277][ T26] INFO: lockdep is turned off. [ 716.601183][ T26] NMI backtrace for cpu 0 [ 716.605510][ T26] CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 [ 716.615116][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.625150][ T26] Call Trace: [ 716.628415][ T26] dump_stack_lvl+0xcd/0x134 [ 716.633045][ T26] nmi_cpu_backtrace.cold+0x47/0x144 [ 716.638336][ T26] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.643587][ T26] nmi_trigger_cpumask_backtrace+0x1ae/0x220 [ 716.649602][ T26] watchdog+0xcb7/0xed0 [ 716.653767][ T26] ? trace_sched_process_hang+0x280/0x280 [ 716.659481][ T26] kthread+0x3e5/0x4d0 [ 716.663729][ T26] ? set_kthread_struct+0x130/0x130 [ 716.668926][ T26] ret_from_fork+0x1f/0x30 [ 716.673425][ T26] Sending NMI from CPU 0 to CPUs 1: [ 716.678653][ C1] NMI backtrace for cpu 1 [ 716.678664][ C1] CPU: 1 PID: 2595 Comm: kworker/u4:6 Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 [ 716.678688][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.678703][ C1] Workqueue: events_unbound toggle_allocation_gate [ 716.678792][ C1] RIP: 0010:inat_get_opcode_attribute+0x0/0x50 [ 716.678855][ C1] Code: 8b 10 31 c0 0f 1f 00 c3 66 90 0f 1f 00 0f ae e8 48 8b 10 31 c0 0f 1f 00 c3 90 0f 1f 00 31 d2 48 c7 c0 f2 ff ff ff c3 cc cc cc <53> 89 fb e8 f8 05 81 fd 0f b6 db 48 b8 00 00 00 00 00 fc ff df 48 [ 716.678876][ C1] RSP: 0018:ffffc9000a5cf900 EFLAGS: 00000246 [ 716.678892][ C1] RAX: ffffffff81bb13e9 RBX: 0000000000000001 RCX: 0000000000000001 [ 716.678906][ C1] RDX: 1ffffffff037627d RSI: ffffffff83f5255d RDI: 00000000000000e9 [ 716.678921][ C1] RBP: dffffc0000000000 R08: 0000000000000001 R09: 000000000000000f [ 716.678935][ C1] R10: ffffffff83f524db R11: 00000000000000e9 R12: 0000000000000000 [ 716.678948][ C1] R13: 00000000000000e9 R14: dffffc0000000000 R15: 00000000000000e9 [ 716.678963][ C1] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 716.678983][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 716.678999][ C1] CR2: 00007fadfa653000 CR3: 000000000b68e000 CR4: 00000000001506e0 [ 716.679013][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 716.679028][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 716.679042][ C1] Call Trace: [ 716.679047][ C1] insn_get_prefixes.part.0+0x293/0x1200 [ 716.679077][ C1] ? kmem_cache_alloc_bulk+0x179/0x710 [ 716.679122][ C1] ? kmem_cache_alloc_bulk+0x188/0x710 [ 716.679151][ C1] insn_get_modrm+0x646/0x7c0 [ 716.679176][ C1] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 716.679201][ C1] ? cpumask_any_but+0x155/0x1a0 [ 716.679223][ C1] ? kmem_cache_alloc_bulk+0x188/0x710 [ 716.679249][ C1] insn_get_sib+0x29c/0x330 [ 716.679275][ C1] insn_get_displacement+0x31c/0x660 [ 716.679303][ C1] ? kmem_cache_alloc_bulk+0x179/0x710 [ 716.679330][ C1] ? kmem_cache_alloc_bulk+0x188/0x710 [ 716.679356][ C1] insn_decode+0x473/0x4e0 [ 716.679382][ C1] ? kmem_cache_alloc_bulk+0x179/0x710 [ 716.679409][ C1] arch_jump_entry_size+0xa0/0x110 [ 716.679462][ C1] ? arch_jump_entry_size.part.0+0x10/0x10 [ 716.679486][ C1] ? rcu_read_lock_sched_held+0xd/0x70 [ 716.679518][ C1] ? kmem_cache_alloc_bulk+0x179/0x710 [ 716.679544][ C1] ? kmem_cache_alloc_bulk+0x188/0x710 [ 716.679571][ C1] ? kmem_cache_alloc_bulk+0x179/0x710 [ 716.679599][ C1] ? static_key_disable_cpuslocked+0x108/0x1b0 [ 716.679651][ C1] ? kmem_cache_alloc_bulk+0x3eb/0x710 [ 716.679678][ C1] __jump_label_patch+0x7c/0x1b0 [ 716.679701][ C1] arch_jump_label_transform_queue+0x63/0x100 [ 716.679731][ C1] ? lock_release+0x522/0x720 [ 716.679753][ C1] __jump_label_update+0x12e/0x400 [ 716.679778][ C1] jump_label_update+0x1d5/0x430 [ 716.679803][ C1] static_key_disable_cpuslocked+0x152/0x1b0 [ 716.679828][ C1] static_key_disable+0x16/0x20 [ 716.679850][ C1] toggle_allocation_gate+0x185/0x390 [ 716.679875][ C1] ? lock_release+0x720/0x720 [ 716.679896][ C1] ? wake_up_kfence_timer+0x20/0x20 [ 716.679923][ C1] ? read_word_at_a_time+0xe/0x20 [ 716.679943][ C1] ? strscpy+0xa1/0x2b0 [ 716.679963][ C1] process_one_work+0x98d/0x1630 [ 716.679995][ C1] ? pwq_dec_nr_in_flight+0x320/0x320 [ 716.680026][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 716.680053][ C1] worker_thread+0x658/0x11f0 [ 716.680084][ C1] ? process_one_work+0x1630/0x1630 [ 716.680113][ C1] kthread+0x3e5/0x4d0 [ 716.680137][ C1] ? set_kthread_struct+0x130/0x130 [ 716.680163][ C1] ret_from_fork+0x1f/0x30 [ 716.680196][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.542 msecs [ 716.680669][ T26] Kernel panic - not syncing: hung_task: blocked tasks [ 717.052826][ T26] CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 [ 717.062204][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 717.072256][ T26] Call Trace: [ 717.075536][ T26] dump_stack_lvl+0xcd/0x134 [ 717.080129][ T26] panic+0x2b0/0x6dd [ 717.084049][ T26] ? __warn_printk+0xf3/0xf3 [ 717.088640][ T26] ? lapic_can_unplug_cpu+0x80/0x80 [ 717.093844][ T26] ? preempt_schedule_thunk+0x16/0x18 [ 717.099218][ T26] ? nmi_trigger_cpumask_backtrace+0x191/0x220 [ 717.105371][ T26] ? watchdog.cold+0x1b9/0x1de [ 717.110149][ T26] watchdog.cold+0x1ca/0x1de [ 717.114739][ T26] ? trace_sched_process_hang+0x280/0x280 [ 717.120559][ T26] kthread+0x3e5/0x4d0 [ 717.124630][ T26] ? set_kthread_struct+0x130/0x130 [ 717.129830][ T26] ret_from_fork+0x1f/0x30 [ 717.135614][ T26] Kernel Offset: disabled [ 717.139974][ T26] Rebooting in 86400 seconds..