[ 38.349555] audit: type=1800 audit(1547337786.571:26): pid=7743 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 38.400730] audit: type=1800 audit(1547337786.571:27): pid=7743 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 38.426771] audit: type=1800 audit(1547337786.581:28): pid=7743 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 39.178099] audit: type=1800 audit(1547337787.411:29): pid=7743 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.4' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.092412] WARNING: CPU: 0 PID: 1171 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x93a/0xac0 [ 46.101453] Kernel panic - not syncing: panic_on_warn set ... [ 46.107328] CPU: 0 PID: 1171 Comm: kworker/u5:0 Not tainted 5.0.0-rc1+ #22 [ 46.114317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.123662] Workqueue: hci0 hci_power_on [ 46.127701] Call Trace: [ 46.130278] dump_stack+0x1db/0x2d0 [ 46.133900] ? dump_stack_print_info.cold+0x20/0x20 [ 46.138905] ? tty_set_termios+0x8b0/0xac0 [ 46.143137] panic+0x2cb/0x65c [ 46.146312] ? add_taint.cold+0x16/0x16 [ 46.150272] ? tty_set_termios+0x93a/0xac0 [ 46.154491] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.160014] ? __probe_kernel_read+0x1f4/0x250 [ 46.164580] ? __warn.cold+0x5/0x48 [ 46.168189] ? __warn+0xe8/0x1d0 [ 46.171547] ? tty_set_termios+0x93a/0xac0 [ 46.175778] __warn.cold+0x20/0x48 [ 46.179314] ? tty_set_termios+0x93a/0xac0 [ 46.183551] report_bug+0x263/0x2b0 [ 46.187162] do_error_trap+0x11b/0x200 [ 46.191033] do_invalid_op+0x37/0x50 [ 46.194750] ? tty_set_termios+0x93a/0xac0 [ 46.198988] invalid_op+0x14/0x20 [ 46.202423] RIP: 0010:tty_set_termios+0x93a/0xac0 [ 46.207247] Code: 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ec 00 00 00 41 89 9f d0 03 00 00 e9 f6 fd ff ff e8 d6 18 a8 fd <0f> 0b e9 a9 f7 ff ff e8 4a 04 ec fd e9 48 f9 ff ff 4c 89 ef e8 9d [ 46.226145] RSP: 0018:ffff8880a744f600 EFLAGS: 00010293 [ 46.231503] RAX: ffff8880a7442300 RBX: ffff8880a744f6c0 RCX: ffffffff83d9d62d [ 46.238844] RDX: 0000000000000000 RSI: ffffffff83d9de8a RDI: 0000000000000005 [ 46.246110] RBP: ffff8880a744f6e8 R08: ffff8880a7442300 R09: fffffbfff181d7b5 [ 46.253383] R10: fffffbfff181d7b4 R11: 0000000000000003 R12: ffff8880a744f728 [ 46.260649] R13: 0000000000010004 R14: 000000000001c200 R15: ffff88808ddc80c0 [ 46.267953] ? tty_set_termios+0xdd/0xac0 [ 46.272088] ? tty_set_termios+0x93a/0xac0 [ 46.276324] ? save_trace+0xe0/0x290 [ 46.280023] ? tty_wait_until_sent+0x5d0/0x5d0 [ 46.284589] ? kasan_check_read+0x11/0x20 [ 46.288727] ? __lock_acquire+0x2514/0x4a30 [ 46.293066] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.298584] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 46.303947] hci_uart_set_baudrate+0x1cc/0x250 [ 46.308552] ? hci_uart_set_speeds+0x90/0x90 [ 46.312951] ? hci_send_monitor_ctrl_event+0x520/0x520 [ 46.318215] ? find_held_lock+0x35/0x120 [ 46.322276] hci_uart_setup+0xa2/0x490 [ 46.326146] ? hci_uart_set_baudrate+0x250/0x250 [ 46.330886] hci_dev_do_open+0x6b1/0x1920 [ 46.335017] ? hci_rx_work+0xcd0/0xcd0 [ 46.338888] ? process_one_work+0xbf1/0x1ce0 [ 46.343278] ? find_held_lock+0x35/0x120 [ 46.347317] ? add_lock_to_list.isra.0+0x450/0x450 [ 46.352232] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.357764] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.363315] ? check_preemption_disabled+0x48/0x290 [ 46.368313] hci_power_on+0x10d/0x880 [ 46.372095] ? hci_error_reset+0xf0/0xf0 [ 46.376149] ? __lock_is_held+0xb6/0x140 [ 46.380199] process_one_work+0xd0c/0x1ce0 [ 46.384421] ? __wake_up_common_lock+0x1db/0x390 [ 46.389161] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 46.393814] ? trace_hardirqs_off+0xb8/0x310 [ 46.398223] ? kasan_check_read+0x11/0x20 [ 46.402361] ? do_raw_spin_unlock+0xa0/0x330 [ 46.406752] ? do_raw_spin_trylock+0x270/0x270 [ 46.411323] ? __wake_up_common+0x7d0/0x7d0 [ 46.415626] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.421160] ? get_work_pool_id+0x1a0/0x1a0 [ 46.425470] ? trace_hardirqs_on_caller+0x310/0x310 [ 46.430495] worker_thread+0x143/0x14a0 [ 46.434459] ? process_one_work+0x1ce0/0x1ce0 [ 46.438949] ? __kthread_parkme+0xc3/0x1b0 [ 46.443182] ? lock_acquire+0x1db/0x570 [ 46.447157] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 46.452253] ? lockdep_hardirqs_on+0x415/0x5d0 [ 46.456836] ? trace_hardirqs_on+0xbd/0x310 [ 46.461172] ? kasan_check_read+0x11/0x20 [ 46.465319] ? __kthread_parkme+0xc3/0x1b0 [ 46.469553] ? trace_hardirqs_off_caller+0x300/0x300 [ 46.474636] ? do_raw_spin_trylock+0x270/0x270 [ 46.479198] ? schedule+0x108/0x350 [ 46.482811] ? do_raw_spin_trylock+0x270/0x270 [ 46.487389] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 46.492479] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 46.498012] ? __kthread_parkme+0xfb/0x1b0 [ 46.502233] kthread+0x357/0x430 [ 46.505600] ? process_one_work+0x1ce0/0x1ce0 [ 46.510075] ? kthread_stop+0x920/0x920 [ 46.514033] ret_from_fork+0x3a/0x50 [ 46.518927] Kernel Offset: disabled [ 46.522607] Rebooting in 86400 seconds..