[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.73' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 488.000284][ T26] Bluetooth: hci0: command 0x0409 tx timeout [ 490.080067][ T26] Bluetooth: hci0: command 0x041b tx timeout [ 492.159883][ T26] Bluetooth: hci0: command 0x040f tx timeout [ 494.239689][ T26] Bluetooth: hci0: command 0x0419 tx timeout [ 496.319451][ T26] Bluetooth: hci0: command 0x0405 tx timeout [ 610.630250][ T26] Bluetooth: hci0: command 0x0406 tx timeout [ 716.064386][ T27] INFO: task krfcommd:2894 blocked for more than 143 seconds. [ 716.071899][ T27] Not tainted 5.14.0-rc5-next-20210816-syzkaller #0 [ 716.079603][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.088400][ T27] task:krfcommd state:D stack:29592 pid: 2894 ppid: 2 flags:0x00004000 [ 716.097816][ T27] Call Trace: [ 716.101092][ T27] __schedule+0x93a/0x26f0 [ 716.105666][ T27] ? io_schedule_timeout+0x140/0x140 [ 716.110957][ T27] ? rwlock_bug.part.0+0x90/0x90 [ 716.115998][ T27] schedule+0xd3/0x270 [ 716.120074][ T27] schedule_preempt_disabled+0xf/0x20 [ 716.125537][ T27] __mutex_lock+0xa46/0x1300 [ 716.130182][ T27] ? rfcomm_run+0x2ed/0x4a20 [ 716.134838][ T27] ? mutex_lock_io_nested+0x1160/0x1160 [ 716.140407][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 716.145310][ T27] rfcomm_run+0x2ed/0x4a20 [ 716.149743][ T27] ? find_held_lock+0x2d/0x110 [ 716.154530][ T27] ? rfcomm_check_accept+0x240/0x240 [ 716.159820][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 716.164723][ T27] ? __init_waitqueue_head+0xd0/0xd0 [ 716.170068][ T27] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 716.175917][ T27] ? lockdep_hardirqs_on+0x79/0x100 [ 716.181117][ T27] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 716.187472][ T27] ? __kthread_parkme+0x15f/0x220 [ 716.192555][ T27] ? rfcomm_check_accept+0x240/0x240 [ 716.197891][ T27] kthread+0x3e5/0x4d0 [ 716.201971][ T27] ? set_kthread_struct+0x130/0x130 [ 716.207228][ T27] ret_from_fork+0x1f/0x30 [ 716.211740][ T27] INFO: task syz-executor472:6602 blocked for more than 143 seconds. [ 716.219877][ T27] Not tainted 5.14.0-rc5-next-20210816-syzkaller #0 [ 716.227015][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.235699][ T27] task:syz-executor472 state:D stack:28184 pid: 6602 ppid: 6570 flags:0x00004006 [ 716.244937][ T27] Call Trace: [ 716.248210][ T27] __schedule+0x93a/0x26f0 [ 716.252619][ T27] ? io_schedule_timeout+0x140/0x140 [ 716.257922][ T27] ? trace_hardirqs_on+0x5b/0x1c0 [ 716.263020][ T27] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 716.268850][ T27] schedule+0xd3/0x270 [ 716.272929][ T27] __lock_sock+0x13d/0x260 [ 716.277428][ T27] ? sock_omalloc+0x180/0x180 [ 716.282104][ T27] ? __rfcomm_dlc_close+0x162/0x8a0 [ 716.287338][ T27] ? finish_wait+0x270/0x270 [ 716.291927][ T27] ? rwlock_bug.part.0+0x90/0x90 [ 716.296884][ T27] lock_sock_nested+0xf6/0x120 [ 716.301679][ T27] rfcomm_sk_state_change+0xb4/0x390 [ 716.307139][ T27] __rfcomm_dlc_close+0x1b6/0x8a0 [ 716.312176][ T27] rfcomm_dlc_close+0x1ea/0x240 [ 716.317047][ T27] __rfcomm_sock_close+0xac/0x260 [ 716.322073][ T27] rfcomm_sock_shutdown+0xe9/0x210 [ 716.327220][ T27] rfcomm_sock_release+0x5f/0x140 [ 716.332249][ T27] __sock_release+0xcd/0x280 [ 716.336942][ T27] sock_close+0x18/0x20 [ 716.341100][ T27] __fput+0x288/0x9f0 [ 716.345178][ T27] ? __sock_release+0x280/0x280 [ 716.350036][ T27] task_work_run+0xdd/0x1a0 [ 716.354663][ T27] do_exit+0xbae/0x2a30 [ 716.358869][ T27] ? lock_acquire+0x442/0x510 [ 716.363531][ T27] ? rcu_read_lock_sched_held+0xd/0x70 [ 716.369063][ T27] ? lock_release+0x522/0x720 [ 716.373743][ T27] ? mm_update_next_owner+0x7a0/0x7a0 [ 716.379140][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 716.383993][ T27] ? do_raw_spin_lock+0x120/0x2b0 [ 716.389035][ T27] ? rwlock_bug.part.0+0x90/0x90 [ 716.393974][ T27] do_group_exit+0x125/0x310 [ 716.398681][ T27] get_signal+0x47f/0x2160 [ 716.403707][ T27] ? lock_downgrade+0x6e0/0x6e0 [ 716.408591][ T27] ? wake_up_q+0xf0/0xf0 [ 716.412909][ T27] arch_do_signal_or_restart+0x2a9/0x1c40 [ 716.418692][ T27] ? rfcomm_sock_connect+0x15f/0x460 [ 716.423978][ T27] ? rfcomm_sock_getname+0x300/0x300 [ 716.429284][ T27] ? __sys_connect_file+0x4e/0x1a0 [ 716.434433][ T27] ? get_sigframe_size+0x10/0x10 [ 716.439365][ T27] ? __sys_connect_file+0x1a0/0x1a0 [ 716.444587][ T27] exit_to_user_mode_prepare+0x17d/0x290 [ 716.450268][ T27] syscall_exit_to_user_mode+0x19/0x60 [ 716.455783][ T27] do_syscall_64+0x42/0xb0 [ 716.460289][ T27] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 716.466285][ T27] RIP: 0033:0x445fe9 [ 716.470184][ T27] RSP: 002b:00007ffeb5445fa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 716.478645][ T27] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000445fe9 [ 716.486679][ T27] RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004 [ 716.494741][ T27] RBP: 0000000000000003 R08: 000000ff00000001 R09: 000000ff00000001 [ 716.502842][ T27] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001b2e2b8 [ 716.510848][ T27] R13: 0000000000000072 R14: 00007ffeb5446000 R15: 0000000000000003 [ 716.518930][ T27] INFO: lockdep is turned off. [ 716.518939][ T27] NMI backtrace for cpu 1 [ 716.518948][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210816-syzkaller #0 [ 716.518971][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.518983][ T27] Call Trace: [ 716.518990][ T27] dump_stack_lvl+0xcd/0x134 [ 716.555188][ T27] nmi_cpu_backtrace.cold+0x47/0x144 [ 716.560459][ T27] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.565715][ T27] nmi_trigger_cpumask_backtrace+0x1ae/0x220 [ 716.571718][ T27] watchdog+0xcb7/0xed0 [ 716.575855][ T27] ? trace_sched_process_hang+0x280/0x280 [ 716.581569][ T27] kthread+0x3e5/0x4d0 [ 716.585621][ T27] ? set_kthread_struct+0x130/0x130 [ 716.590808][ T27] ret_from_fork+0x1f/0x30 [ 716.595397][ T27] Sending NMI from CPU 1 to CPUs 0: [ 716.600632][ C0] NMI backtrace for cpu 0 [ 716.600645][ C0] CPU: 0 PID: 6606 Comm: kworker/u4:0 Not tainted 5.14.0-rc5-next-20210816-syzkaller #0 [ 716.600669][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.600683][ C0] Workqueue: events_unbound toggle_allocation_gate [ 716.600780][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x60 [ 716.600808][ C0] Code: 81 e1 00 01 00 00 65 48 8b 14 25 40 f0 01 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 3c 15 00 00 85 c0 74 2b 8b 82 18 15 00 00 <83> f8 02 75 20 48 8b 8a 20 15 00 00 8b 92 1c 15 00 00 48 8b 01 48 [ 716.600827][ C0] RSP: 0018:ffffc90002c3f968 EFLAGS: 00000046 [ 716.600843][ C0] RAX: 0000000000000000 RBX: ffff888011ea5000 RCX: 0000000000000000 [ 716.600858][ C0] RDX: ffff888013fd3900 RSI: ffffffff81347e50 RDI: 0000000000000003 [ 716.600872][ C0] RBP: ffff888091ea5000 R08: ffff888011ea5000 R09: ffff888140110418 [ 716.600887][ C0] R10: ffffffff81347e38 R11: 000000000000003f R12: 0000778000000000 [ 716.600901][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000000080a2 [ 716.600914][ C0] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 716.600935][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 716.600950][ C0] CR2: 00007f80aeeab000 CR3: 000000000b68e000 CR4: 00000000001506f0 [ 716.600964][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 716.600976][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 716.600990][ C0] Call Trace: [ 716.600996][ C0] __phys_addr+0x40/0x140 [ 716.601086][ C0] load_new_mm_cr3+0xa2/0x130 [ 716.601110][ C0] switch_mm_irqs_off+0x496/0xa10 [ 716.601134][ C0] ? __get_locked_pte+0x2bb/0x4d0 [ 716.601195][ C0] ? __kmalloc_track_caller+0xc9/0x310 [ 716.601222][ C0] __text_poke+0x447/0x8c0 [ 716.601264][ C0] ? text_poke_loc_init+0x340/0x340 [ 716.601289][ C0] ? __text_poke+0x8c0/0x8c0 [ 716.601311][ C0] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 716.601338][ C0] text_poke_bp_batch+0x3d7/0x560 [ 716.601364][ C0] ? mutex_lock_io_nested+0x1160/0x1160 [ 716.601393][ C0] ? alternatives_enable_smp+0xf0/0xf0 [ 716.601418][ C0] ? __jump_label_patch+0x159/0x1b0 [ 716.601442][ C0] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 716.601467][ C0] ? __jump_label_update+0x351/0x400 [ 716.601527][ C0] text_poke_finish+0x16/0x30 [ 716.601550][ C0] arch_jump_label_transform_apply+0x13/0x20 [ 716.601574][ C0] jump_label_update+0x1d5/0x430 [ 716.601597][ C0] static_key_enable_cpuslocked+0x1b1/0x260 [ 716.601622][ C0] static_key_enable+0x16/0x20 [ 716.601643][ C0] toggle_allocation_gate+0x100/0x390 [ 716.601667][ C0] ? lock_release+0x720/0x720 [ 716.601688][ C0] ? wake_up_kfence_timer+0x20/0x20 [ 716.601714][ C0] ? read_word_at_a_time+0xe/0x20 [ 716.601734][ C0] ? strscpy+0xa1/0x2b0 [ 716.601754][ C0] process_one_work+0x98d/0x1630 [ 716.601784][ C0] ? pwq_dec_nr_in_flight+0x320/0x320 [ 716.601813][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 716.601839][ C0] worker_thread+0x658/0x11f0 [ 716.601869][ C0] ? process_one_work+0x1630/0x1630 [ 716.601897][ C0] kthread+0x3e5/0x4d0 [ 716.601920][ C0] ? _raw_spin_unlock_irq+0x1f/0x40 [ 716.601941][ C0] ? set_kthread_struct+0x130/0x130 [ 716.601968][ C0] ret_from_fork+0x1f/0x30 [ 716.601999][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.367 msecs [ 716.602843][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 716.934713][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210816-syzkaller #0 [ 716.944073][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.954126][ T27] Call Trace: [ 716.957394][ T27] dump_stack_lvl+0xcd/0x134 [ 716.961981][ T27] panic+0x2b0/0x6dd [ 716.965908][ T27] ? __warn_printk+0xf3/0xf3 [ 716.970491][ T27] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.975773][ T27] ? preempt_schedule_thunk+0x16/0x18 [ 716.981137][ T27] ? nmi_trigger_cpumask_backtrace+0x191/0x220 [ 716.987291][ T27] ? watchdog.cold+0x1b9/0x1de [ 716.992066][ T27] watchdog.cold+0x1ca/0x1de [ 716.996661][ T27] ? trace_sched_process_hang+0x280/0x280 [ 717.002477][ T27] kthread+0x3e5/0x4d0 [ 717.006559][ T27] ? set_kthread_struct+0x130/0x130 [ 717.012028][ T27] ret_from_fork+0x1f/0x30 [ 717.017667][ T27] Kernel Offset: disabled [ 717.021975][ T27] Rebooting in 86400 seconds..