[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 39.527767] audit: type=1800 audit(1547339070.895:25): pid=7794 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 39.547289] audit: type=1800 audit(1547339070.895:26): pid=7794 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 39.567339] audit: type=1800 audit(1547339070.895:27): pid=7794 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.192' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 54.893219] WARNING: CPU: 0 PID: 1171 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x93a/0xac0 [ 54.902279] Kernel panic - not syncing: panic_on_warn set ... [ 54.908171] CPU: 0 PID: 1171 Comm: kworker/u5:0 Not tainted 5.0.0-rc1+ #22 [ 54.915285] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.924803] Workqueue: hci0 hci_power_on [ 54.928855] Call Trace: [ 54.931430] dump_stack+0x1db/0x2d0 [ 54.935057] ? dump_stack_print_info.cold+0x20/0x20 [ 54.940098] ? tty_set_termios+0x8b0/0xac0 [ 54.944320] panic+0x2cb/0x65c [ 54.947499] ? add_taint.cold+0x16/0x16 [ 54.951457] ? tty_set_termios+0x93a/0xac0 [ 54.955672] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.961215] ? __probe_kernel_read+0x1f4/0x250 [ 54.965781] ? __warn.cold+0x5/0x48 [ 54.969413] ? __warn+0xe8/0x1d0 [ 54.972765] ? tty_set_termios+0x93a/0xac0 [ 54.976986] __warn.cold+0x20/0x48 [ 54.980519] ? tty_set_termios+0x93a/0xac0 [ 54.984735] report_bug+0x263/0x2b0 [ 54.988349] do_error_trap+0x11b/0x200 [ 54.992244] do_invalid_op+0x37/0x50 [ 54.995951] ? tty_set_termios+0x93a/0xac0 [ 55.000179] invalid_op+0x14/0x20 [ 55.003617] RIP: 0010:tty_set_termios+0x93a/0xac0 [ 55.008448] 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 [ 55.027438] RSP: 0018:ffff8880a74f7600 EFLAGS: 00010293 [ 55.032782] RAX: ffff8880a74d4300 RBX: ffff8880a74f76c0 RCX: ffffffff83d9d62d [ 55.040057] RDX: 0000000000000000 RSI: ffffffff83d9de8a RDI: 0000000000000005 [ 55.047320] RBP: ffff8880a74f76e8 R08: ffff8880a74d4300 R09: fffffbfff181d7b5 [ 55.054574] R10: fffffbfff181d7b4 R11: 0000000000000003 R12: ffff8880a74f7728 [ 55.061825] R13: 0000000000010004 R14: 000000000001c200 R15: ffff88808e3e60c0 [ 55.069090] ? tty_set_termios+0xdd/0xac0 [ 55.073315] ? tty_set_termios+0x93a/0xac0 [ 55.077554] ? save_trace+0xe0/0x290 [ 55.081271] ? tty_wait_until_sent+0x5d0/0x5d0 [ 55.085966] ? kasan_check_read+0x11/0x20 [ 55.090103] ? __lock_acquire+0x2514/0x4a30 [ 55.094420] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.100072] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 55.105653] hci_uart_set_baudrate+0x1cc/0x250 [ 55.110222] ? hci_uart_set_speeds+0x90/0x90 [ 55.114622] ? hci_send_monitor_ctrl_event+0x520/0x520 [ 55.119882] ? find_held_lock+0x35/0x120 [ 55.123933] hci_uart_setup+0xa2/0x490 [ 55.127808] ? hci_uart_set_baudrate+0x250/0x250 [ 55.132558] hci_dev_do_open+0x6b1/0x1920 [ 55.136746] ? hci_rx_work+0xcd0/0xcd0 [ 55.140631] ? process_one_work+0xbf1/0x1ce0 [ 55.145025] ? find_held_lock+0x35/0x120 [ 55.149101] ? add_lock_to_list.isra.0+0x450/0x450 [ 55.154014] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.159539] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.165164] ? check_preemption_disabled+0x48/0x290 [ 55.170190] hci_power_on+0x10d/0x880 [ 55.173979] ? hci_error_reset+0xf0/0xf0 [ 55.178022] ? __lock_is_held+0xb6/0x140 [ 55.182081] process_one_work+0xd0c/0x1ce0 [ 55.186318] ? __wake_up_common_lock+0x1db/0x390 [ 55.191102] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 55.195763] ? trace_hardirqs_off+0xb8/0x310 [ 55.200156] ? kasan_check_read+0x11/0x20 [ 55.204287] ? do_raw_spin_unlock+0xa0/0x330 [ 55.208682] ? do_raw_spin_trylock+0x270/0x270 [ 55.213259] ? __wake_up_common+0x7d0/0x7d0 [ 55.217680] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.223203] ? get_work_pool_id+0x1a0/0x1a0 [ 55.227506] ? trace_hardirqs_on_caller+0x310/0x310 [ 55.232520] worker_thread+0x143/0x14a0 [ 55.236492] ? process_one_work+0x1ce0/0x1ce0 [ 55.240974] ? __kthread_parkme+0xc3/0x1b0 [ 55.245214] ? lock_acquire+0x1db/0x570 [ 55.249246] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 55.254348] ? lockdep_hardirqs_on+0x415/0x5d0 [ 55.258918] ? trace_hardirqs_on+0xbd/0x310 [ 55.263224] ? kasan_check_read+0x11/0x20 [ 55.267362] ? __kthread_parkme+0xc3/0x1b0 [ 55.271583] ? trace_hardirqs_off_caller+0x300/0x300 [ 55.276673] ? do_raw_spin_trylock+0x270/0x270 [ 55.281378] ? schedule+0x108/0x350 [ 55.284998] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 55.290088] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 55.295616] ? __kthread_parkme+0xfb/0x1b0 [ 55.299838] kthread+0x357/0x430 [ 55.303196] ? process_one_work+0x1ce0/0x1ce0 [ 55.307677] ? kthread_stop+0x920/0x920 [ 55.311640] ret_from_fork+0x3a/0x50 [ 55.316476] Kernel Offset: disabled [ 55.320163] Rebooting in 86400 seconds..