Warning: Permanently added '10.128.0.115' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 488.103927][ T4582] Bluetooth: hci0: command 0x0409 tx timeout [ 490.183096][ T4582] Bluetooth: hci0: command 0x041b tx timeout [ 492.262996][ T8491] Bluetooth: hci0: command 0x040f tx timeout [ 494.342764][ T8491] Bluetooth: hci0: command 0x0419 tx timeout [ 496.422446][ T8491] Bluetooth: hci0: command 0x0405 tx timeout [ 610.653134][ T8491] Bluetooth: hci0: command 0x0406 tx timeout [ 721.206797][ T1656] INFO: task krfcommd:4781 blocked for more than 143 seconds. [ 721.214472][ T1656] Not tainted 5.14.0-rc7-syzkaller #0 [ 721.221418][ T1656] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.230200][ T1656] task:krfcommd state:D stack:29640 pid: 4781 ppid: 2 flags:0x00004000 [ 721.240027][ T1656] Call Trace: [ 721.243326][ T1656] __schedule+0x93a/0x26f0 [ 721.248253][ T1656] ? io_schedule_timeout+0x140/0x140 [ 721.253574][ T1656] schedule+0xd3/0x270 [ 721.258130][ T1656] schedule_preempt_disabled+0xf/0x20 [ 721.263516][ T1656] __mutex_lock+0x7b6/0x10a0 [ 721.268667][ T1656] ? rfcomm_run+0x2ed/0x4a20 [ 721.273362][ T1656] ? mutex_lock_io_nested+0xf00/0xf00 [ 721.279278][ T1656] ? __mutex_unlock_slowpath+0xe2/0x610 [ 721.284855][ T1656] rfcomm_run+0x2ed/0x4a20 [ 721.289699][ T1656] ? find_held_lock+0x2d/0x110 [ 721.294570][ T1656] ? rfcomm_check_accept+0x240/0x240 [ 721.300247][ T1656] ? lock_downgrade+0x6e0/0x6e0 [ 721.305112][ T1656] ? __init_waitqueue_head+0xd0/0xd0 [ 721.310834][ T1656] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 721.317082][ T1656] ? lockdep_hardirqs_on+0x79/0x100 [ 721.322355][ T1656] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 721.328907][ T1656] ? __kthread_parkme+0x15f/0x220 [ 721.333997][ T1656] ? rfcomm_check_accept+0x240/0x240 [ 721.339346][ T1656] kthread+0x3e5/0x4d0 [ 721.343425][ T1656] ? set_kthread_struct+0x130/0x130 [ 721.348682][ T1656] ret_from_fork+0x1f/0x30 [ 721.353210][ T1656] INFO: task syz-executor330:8483 blocked for more than 143 seconds. [ 721.361338][ T1656] Not tainted 5.14.0-rc7-syzkaller #0 [ 721.367281][ T1656] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.375941][ T1656] task:syz-executor330 state:D stack:26776 pid: 8483 ppid: 8456 flags:0x00004006 [ 721.385191][ T1656] Call Trace: [ 721.388551][ T1656] __schedule+0x93a/0x26f0 [ 721.392973][ T1656] ? io_schedule_timeout+0x140/0x140 [ 721.398296][ T1656] ? mark_held_locks+0x9f/0xe0 [ 721.403073][ T1656] schedule+0xd3/0x270 [ 721.407190][ T1656] __lock_sock+0x13d/0x260 [ 721.411673][ T1656] ? sock_omalloc+0x180/0x180 [ 721.416338][ T1656] ? finish_wait+0x270/0x270 [ 721.420993][ T1656] ? rwlock_bug.part.0+0x90/0x90 [ 721.425949][ T1656] lock_sock_nested+0xf6/0x120 [ 721.430821][ T1656] rfcomm_sk_state_change+0xb4/0x390 [ 721.436121][ T1656] __rfcomm_dlc_close+0x1b6/0x8a0 [ 721.441260][ T1656] rfcomm_dlc_close+0x1ea/0x240 [ 721.446125][ T1656] __rfcomm_sock_close+0xac/0x260 [ 721.451273][ T1656] rfcomm_sock_shutdown+0xe9/0x210 [ 721.456417][ T1656] rfcomm_sock_release+0x5f/0x140 [ 721.461546][ T1656] __sock_release+0xcd/0x280 [ 721.466213][ T1656] sock_close+0x18/0x20 [ 721.470431][ T1656] __fput+0x288/0x920 [ 721.474491][ T1656] ? __sock_release+0x280/0x280 [ 721.479404][ T1656] task_work_run+0xdd/0x1a0 [ 721.483922][ T1656] do_exit+0xbd4/0x2a60 [ 721.488194][ T1656] ? mm_update_next_owner+0x7a0/0x7a0 [ 721.493575][ T1656] ? lock_downgrade+0x6e0/0x6e0 [ 721.498494][ T1656] do_group_exit+0x125/0x310 [ 721.503095][ T1656] get_signal+0x47f/0x2160 [ 721.507788][ T1656] ? lock_downgrade+0x6e0/0x6e0 [ 721.512655][ T1656] arch_do_signal_or_restart+0x2a9/0x1c40 [ 721.518465][ T1656] ? rfcomm_sock_connect+0x15f/0x460 [ 721.523769][ T1656] ? rfcomm_sock_getname+0x300/0x300 [ 721.529195][ T1656] ? __sys_connect_file+0x4e/0x1a0 [ 721.534320][ T1656] ? get_sigframe_size+0x10/0x10 [ 721.539343][ T1656] ? __sys_connect_file+0x1a0/0x1a0 [ 721.544564][ T1656] exit_to_user_mode_prepare+0x17d/0x290 [ 721.550313][ T1656] syscall_exit_to_user_mode+0x19/0x60 [ 721.555786][ T1656] do_syscall_64+0x42/0xb0 [ 721.560256][ T1656] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 721.566160][ T1656] RIP: 0033:0x445fe9 [ 721.570119][ T1656] RSP: 002b:00007fff3f8050f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 721.578617][ T1656] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000445fe9 [ 721.586765][ T1656] RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004 [ 721.594764][ T1656] RBP: 0000000000000003 R08: 000000ff00000001 R09: 000000ff00000001 [ 721.602819][ T1656] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000050b2b8 [ 721.610855][ T1656] R13: 0000000000000072 R14: 00007fff3f805150 R15: 0000000000000003 [ 721.618934][ T1656] [ 721.618934][ T1656] Showing all locks held in the system: [ 721.626725][ T1656] 1 lock held by khungtaskd/1656: [ 721.631752][ T1656] #0: ffffffff8b97c280 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 721.641690][ T1656] 1 lock held by krfcommd/4781: [ 721.646533][ T1656] #0: ffffffff8d306528 (rfcomm_mutex){+.+.}-{3:3}, at: rfcomm_run+0x2ed/0x4a20 [ 721.655671][ T1656] 1 lock held by in:imklog/8165: [ 721.661045][ T1656] 4 locks held by syz-executor330/8483: [ 721.666663][ T1656] #0: ffff88802a977bd0 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}, at: __sock_release+0x86/0x280 [ 721.677349][ T1656] #1: ffff888147a65120 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sock_shutdown+0x54/0x210 [ 721.689182][ T1656] #2: ffffffff8d306528 (rfcomm_mutex){+.+.}-{3:3}, at: rfcomm_dlc_close+0x34/0x240 [ 721.698645][ T1656] #3: ffff888012b9f528 (&d->lock){+.+.}-{3:3}, at: __rfcomm_dlc_close+0x162/0x8a0 [ 721.708052][ T1656] 6 locks held by kworker/u4:0/8471: [ 721.713340][ T1656] [ 721.715665][ T1656] ============================================= [ 721.715665][ T1656] [ 721.724141][ T1656] NMI backtrace for cpu 1 [ 721.728536][ T1656] CPU: 1 PID: 1656 Comm: khungtaskd Not tainted 5.14.0-rc7-syzkaller #0 [ 721.737386][ T1656] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 721.747427][ T1656] Call Trace: [ 721.750690][ T1656] dump_stack_lvl+0xcd/0x134 [ 721.755328][ T1656] nmi_cpu_backtrace.cold+0x44/0xd7 [ 721.760518][ T1656] ? lapic_can_unplug_cpu+0x80/0x80 [ 721.765743][ T1656] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 721.771740][ T1656] watchdog+0xd0a/0xfc0 [ 721.775885][ T1656] ? reset_hung_task_detector+0x30/0x30 [ 721.781420][ T1656] kthread+0x3e5/0x4d0 [ 721.785477][ T1656] ? set_kthread_struct+0x130/0x130 [ 721.790681][ T1656] ret_from_fork+0x1f/0x30 [ 721.795201][ T1656] Sending NMI from CPU 1 to CPUs 0: [ 721.800736][ C0] NMI backtrace for cpu 0 [ 721.800747][ C0] CPU: 0 PID: 4870 Comm: systemd-journal Not tainted 5.14.0-rc7-syzkaller #0 [ 721.800759][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 721.800771][ C0] RIP: 0010:fault_in_kernel_space+0x2/0x80 [ 721.800784][ C0] Code: e8 f3 80 41 00 4c 89 e2 48 89 ee 4c 89 ef e8 35 e0 ff ff 5b 5d 41 5c 41 5d e9 da 80 41 00 e8 d5 80 41 00 0f 0b eb ba 90 41 54 <55> 53 48 89 fb e8 c4 80 41 00 48 89 dd 48 c7 c7 00 00 60 ff 48 81 [ 721.800805][ C0] RSP: 0000:ffffc9000162ff18 EFLAGS: 00000046 [ 721.800820][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 721.800830][ C0] RDX: ffff888015dd3880 RSI: 0000000000000000 RDI: 00007f3f53ecb000 [ 721.800841][ C0] RBP: ffffc9000162ff58 R08: 0000000000000000 R09: 0000000000000000 [ 721.800852][ C0] R10: ffffffff817bd69c R11: 0000000000000000 R12: 0000000000000006 [ 721.800862][ C0] R13: 0000000000000000 R14: 00007f3f53ecb000 R15: 0000000000000000 [ 721.800873][ C0] FS: 00007f3f56af58c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 721.800884][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 721.800894][ C0] CR2: 00007f3f53ecb000 CR3: 0000000020bfe000 CR4: 00000000001506f0 [ 721.800905][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 721.800915][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 721.800924][ C0] Call Trace: [ 721.800929][ C0] exc_page_fault+0x78/0x180 [ 721.800936][ C0] ? asm_exc_page_fault+0x8/0x30 [ 721.800943][ C0] asm_exc_page_fault+0x1e/0x30 [ 721.800949][ C0] RIP: 0033:0x7f3f55dfe120 [ 721.800961][ C0] Code: fe 6f 06 c5 fe 6f 4e 20 c5 fe 6f 56 40 c5 fe 6f 5e 60 c5 fe 6f 64 16 e0 c5 fe 6f 6c 16 c0 c5 fe 6f 74 16 a0 c5 fe 6f 7c 16 80 fe 7f 07 c5 fe 7f 4f 20 c5 fe 7f 57 40 c5 fe 7f 5f 60 c5 fe 7f [ 721.800981][ C0] RSP: 002b:00007ffcd5d76268 EFLAGS: 00010202 [ 721.800994][ C0] RAX: 00007f3f53ecaff0 RBX: 0000000000000090 RCX: 0000000000256fb0 [ 721.801005][ C0] RDX: 0000000000000090 RSI: 00007ffcd5d76310 RDI: 00007f3f53ecaff0 [ 721.801016][ C0] RBP: 0000000000000000 R08: 0000000000257080 R09: 00007ffcd5d793a0 [ 721.801026][ C0] R10: 00007ffcd5d9b090 R11: 00007f3f53ecafb0 R12: 00005646052e7e80 [ 721.801037][ C0] R13: 714c68cadd22130b R14: 00007ffcd5d76500 R15: 00007ffcd5d76310 [ 721.801491][ T1656] Kernel panic - not syncing: hung_task: blocked tasks [ 722.029009][ T1656] CPU: 1 PID: 1656 Comm: khungtaskd Not tainted 5.14.0-rc7-syzkaller #0 [ 722.037341][ T1656] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.047388][ T1656] Call Trace: [ 722.050662][ T1656] dump_stack_lvl+0xcd/0x134 [ 722.055267][ T1656] panic+0x306/0x73d [ 722.059193][ T1656] ? __warn_printk+0xf3/0xf3 [ 722.063793][ T1656] ? lapic_can_unplug_cpu+0x80/0x80 [ 722.068995][ T1656] ? preempt_schedule_thunk+0x16/0x18 [ 722.074370][ T1656] ? nmi_trigger_cpumask_backtrace+0x196/0x230 [ 722.080530][ T1656] ? watchdog.cold+0x5/0x158 [ 722.085147][ T1656] watchdog.cold+0x16/0x158 [ 722.089657][ T1656] ? reset_hung_task_detector+0x30/0x30 [ 722.095208][ T1656] kthread+0x3e5/0x4d0 [ 722.099281][ T1656] ? set_kthread_struct+0x130/0x130 [ 722.104486][ T1656] ret_from_fork+0x1f/0x30 [ 722.110336][ T1656] Kernel Offset: disabled [ 722.114660][ T1656] Rebooting in 86400 seconds..