Warning: Permanently added '10.128.0.140' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 566.943653][ T1043] INFO: task syz-executor361:7761 blocked for more than 143 seconds. [ 566.952167][ T1043] Not tainted 5.1.0-rc1+ #35 [ 566.957446][ T1043] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 566.966198][ T1043] syz-executor361 D28216 7761 7759 0x80000000 [ 566.972593][ T1043] Call Trace: [ 566.976105][ T1043] __schedule+0x817/0x1cc0 [ 566.980552][ T1043] ? __sched_text_start+0x8/0x8 [ 566.985599][ T1043] ? __lock_acquire+0x242a/0x3fb0 [ 566.990667][ T1043] schedule+0x92/0x180 [ 566.994848][ T1043] schedule_timeout+0x8ca/0xfd0 [ 566.999738][ T1043] ? wait_for_completion+0x294/0x440 [ 567.005208][ T1043] ? find_held_lock+0x35/0x130 [ 567.010045][ T1043] ? usleep_range+0x170/0x170 [ 567.015007][ T1043] ? kasan_check_write+0x14/0x20 [ 567.019968][ T1043] ? _raw_spin_unlock_irq+0x28/0x90 [ 567.025380][ T1043] ? wait_for_completion+0x294/0x440 [ 567.030686][ T1043] ? _raw_spin_unlock_irq+0x28/0x90 [ 567.036017][ T1043] ? lockdep_hardirqs_on+0x418/0x5d0 [ 567.041385][ T1043] ? trace_hardirqs_on+0x67/0x230 [ 567.046642][ T1043] ? kasan_check_read+0x11/0x20 [ 567.051520][ T1043] wait_for_completion+0x29c/0x440 [ 567.057086][ T1043] ? lockdep_hardirqs_on+0x418/0x5d0 [ 567.062402][ T1043] ? wait_for_completion_interruptible+0x4b0/0x4b0 [ 567.069095][ T1043] ? wake_up_q+0xf0/0xf0 [ 567.073415][ T1043] ? percpu_ref_kill_and_confirm+0x1b7/0x3b0 [ 567.079697][ T1043] exit_aio+0x321/0x3a0 [ 567.083955][ T1043] ? io_submit_one+0x1cf0/0x1cf0 [ 567.088909][ T1043] ? mutex_unlock+0xd/0x10 [ 567.093365][ T1043] mmput+0xcf/0x4c0 [ 567.097325][ T1043] do_exit+0x816/0x2fa0 [ 567.101497][ T1043] ? lock_downgrade+0x880/0x880 [ 567.106657][ T1043] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 567.112922][ T1043] ? kasan_check_read+0x11/0x20 [ 567.117882][ T1043] ? mm_update_next_owner+0x640/0x640 [ 567.123382][ T1043] ? __x64_sys_io_submit+0x37d/0x580 [ 567.129095][ T1043] ? __ia32_sys_io_destroy+0x420/0x420 [ 567.134662][ T1043] ? kasan_check_write+0x14/0x20 [ 567.139684][ T1043] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 567.145233][ T1043] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 567.150821][ T1043] do_group_exit+0x135/0x370 [ 567.155537][ T1043] __x64_sys_exit_group+0x44/0x50 [ 567.160572][ T1043] do_syscall_64+0x103/0x610 [ 567.165381][ T1043] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 567.171471][ T1043] RIP: 0033:0x43ee48 [ 567.175605][ T1043] Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 [ 567.195329][ T1043] RSP: 002b:00007ffc739a0678 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 567.203870][ T1043] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ee48 [ 567.211897][ T1043] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 567.219984][ T1043] RBP: 00000000004be648 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 567.228180][ T1043] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 567.236279][ T1043] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 567.244448][ T1043] [ 567.244448][ T1043] Showing all locks held in the system: [ 567.252167][ T1043] 1 lock held by khungtaskd/1043: [ 567.257301][ T1043] #0: 000000002ad8623a (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 567.266740][ T1043] 1 lock held by rsyslogd/7647: [ 567.271639][ T1043] #0: 0000000015834501 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 567.280493][ T1043] 2 locks held by getty/7737: [ 567.285218][ T1043] #0: 000000004c24b236 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 567.294269][ T1043] #1: 000000007e79a9c4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 567.303993][ T1043] 2 locks held by getty/7738: [ 567.308662][ T1043] #0: 00000000b1df2a7e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 567.317879][ T1043] #1: 00000000550125f6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 567.327657][ T1043] 2 locks held by getty/7739: [ 567.332321][ T1043] #0: 00000000ea75eda2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 567.341395][ T1043] #1: 00000000ee004bad (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 567.351079][ T1043] 2 locks held by getty/7740: [ 567.355801][ T1043] #0: 00000000a3249459 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 567.364993][ T1043] #1: 00000000cb0b61f8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 567.374791][ T1043] 2 locks held by getty/7741: [ 567.379533][ T1043] #0: 0000000004a06681 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 567.388588][ T1043] #1: 0000000087f583b4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 567.398241][ T1043] 2 locks held by getty/7742: [ 567.402941][ T1043] #0: 00000000474b5a10 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 567.411987][ T1043] #1: 00000000ee2dbcf8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 567.421644][ T1043] 2 locks held by getty/7743: [ 567.426840][ T1043] #0: 0000000086baa7e0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 567.435973][ T1043] #1: 00000000cea69fc0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 567.445687][ T1043] [ 567.448009][ T1043] ============================================= [ 567.448009][ T1043] [ 567.456733][ T1043] NMI backtrace for cpu 1 [ 567.461109][ T1043] CPU: 1 PID: 1043 Comm: khungtaskd Not tainted 5.1.0-rc1+ #35 [ 567.468707][ T1043] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 567.478764][ T1043] Call Trace: [ 567.482115][ T1043] dump_stack+0x172/0x1f0 [ 567.486436][ T1043] nmi_cpu_backtrace.cold+0x63/0xa4 [ 567.491692][ T1043] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 567.497326][ T1043] nmi_trigger_cpumask_backtrace+0x1be/0x236 [ 567.503427][ T1043] arch_trigger_cpumask_backtrace+0x14/0x20 [ 567.509310][ T1043] watchdog+0x9b7/0xec0 [ 567.513517][ T1043] kthread+0x357/0x430 [ 567.517672][ T1043] ? reset_hung_task_detector+0x30/0x30 [ 567.528098][ T1043] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 567.534345][ T1043] ret_from_fork+0x3a/0x50 [ 567.538908][ T1043] Sending NMI from CPU 1 to CPUs 0: [ 567.544250][ C0] NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0x2/0x10 [ 567.545171][ T1043] Kernel panic - not syncing: hung_task: blocked tasks [ 567.559374][ T1043] CPU: 1 PID: 1043 Comm: khungtaskd Not tainted 5.1.0-rc1+ #35 [ 567.566905][ T1043] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 567.577333][ T1043] Call Trace: [ 567.580640][ T1043] dump_stack+0x172/0x1f0 [ 567.584966][ T1043] panic+0x2cb/0x65c [ 567.588859][ T1043] ? __warn_printk+0xf3/0xf3 [ 567.593457][ T1043] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 567.599227][ T1043] ? printk_safe_flush+0xf2/0x140 [ 567.604247][ T1043] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 567.610483][ T1043] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 567.616160][ T1043] ? nmi_trigger_cpumask_backtrace+0x1a7/0x236 [ 567.622308][ T1043] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 567.628447][ T1043] watchdog+0x9c8/0xec0 [ 567.632645][ T1043] kthread+0x357/0x430 [ 567.636723][ T1043] ? reset_hung_task_detector+0x30/0x30 [ 567.642433][ T1043] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 567.648662][ T1043] ret_from_fork+0x3a/0x50 [ 567.654004][ T1043] Kernel Offset: disabled [ 567.658331][ T1043] Rebooting in 86400 seconds..