[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 65.409669][ T26] audit: type=1800 audit(1559594772.320:25): pid=8778 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 65.455441][ T26] audit: type=1800 audit(1559594772.320:26): pid=8778 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 65.491015][ T26] audit: type=1800 audit(1559594772.320:27): pid=8778 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 '10.128.0.134' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 75.922148][ T1503] WARNING: CPU: 0 PID: 1503 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x7a5/0x8d0 [ 75.931959][ T1503] Kernel panic - not syncing: panic_on_warn set ... [ 75.938571][ T1503] CPU: 0 PID: 1503 Comm: kworker/u5:0 Not tainted 5.2.0-rc3 #18 [ 75.946192][ T1503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.956280][ T1503] Workqueue: hci0 hci_power_on [ 75.961057][ T1503] Call Trace: [ 75.964376][ T1503] dump_stack+0x172/0x1f0 [ 75.968705][ T1503] ? tty_set_termios+0x6e0/0x8d0 [ 75.973658][ T1503] panic+0x2cb/0x744 [ 75.977573][ T1503] ? __warn_printk+0xf3/0xf3 [ 75.982170][ T1503] ? tty_set_termios+0x7a5/0x8d0 [ 75.987249][ T1503] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.993514][ T1503] ? __warn.cold+0x5/0x4d [ 75.997906][ T1503] ? __warn+0xe8/0x1d0 [ 76.001978][ T1503] ? tty_set_termios+0x7a5/0x8d0 [ 76.006939][ T1503] __warn.cold+0x20/0x4d [ 76.011203][ T1503] ? tty_set_termios+0x7a5/0x8d0 [ 76.016152][ T1503] report_bug+0x263/0x2b0 [ 76.020605][ T1503] do_error_trap+0x11b/0x200 [ 76.025192][ T1503] do_invalid_op+0x37/0x50 [ 76.029635][ T1503] ? tty_set_termios+0x7a5/0x8d0 [ 76.034573][ T1503] invalid_op+0x14/0x20 [ 76.038740][ T1503] RIP: 0010:tty_set_termios+0x7a5/0x8d0 [ 76.044289][ T1503] Code: 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a3 00 00 00 45 89 a7 d0 03 00 00 e9 49 fe ff ff e8 eb a4 f9 fd <0f> 0b e9 3e f9 ff ff e8 ef 42 32 fe e9 d6 fa ff ff e8 e5 42 32 fe [ 76.073800][ T1503] RSP: 0018:ffff8880a669f968 EFLAGS: 00010293 [ 76.079873][ T1503] RAX: ffff8880a6692640 RBX: ffff8880a669fa28 RCX: ffffffff8376fafd [ 76.087843][ T1503] RDX: 0000000000000000 RSI: ffffffff837701c5 RDI: 0000000000000005 [ 76.095827][ T1503] RBP: ffff8880a669fa50 R08: ffff8880a6692640 R09: fffffbfff163c5f5 [ 76.103802][ T1503] R10: fffffbfff163c5f4 R11: 0000000000000003 R12: ffff8880a669fa90 [ 76.111981][ T1503] R13: 0000000000010004 R14: 1ffff11014cd3f4c R15: ffff8880a3938180 [ 76.119982][ T1503] ? tty_set_termios+0xdd/0x8d0 [ 76.125422][ T1503] ? tty_set_termios+0x7a5/0x8d0 [ 76.130368][ T1503] ? tty_set_termios+0x7a5/0x8d0 [ 76.135318][ T1503] ? hci_dev_do_open+0xa3/0x1760 [ 76.140274][ T1503] ? tty_wait_until_sent+0x580/0x580 [ 76.145566][ T1503] ? __mutex_lock+0x3cd/0x1310 [ 76.150349][ T1503] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.156619][ T1503] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 76.162981][ T1503] hci_uart_set_baudrate+0x157/0x1c0 [ 76.168279][ T1503] ? hci_uart_set_speeds+0x90/0x90 [ 76.173392][ T1503] ? find_first_zero_bit+0x9a/0xc0 [ 76.178530][ T1503] ? kasan_check_read+0x11/0x20 [ 76.183391][ T1503] hci_uart_setup+0xa2/0x490 [ 76.187990][ T1503] ? hci_uart_set_baudrate+0x1c0/0x1c0 [ 76.193451][ T1503] hci_dev_do_open+0x784/0x1760 [ 76.198302][ T1503] ? hci_rx_work+0xaa0/0xaa0 [ 76.202919][ T1503] ? trace_hardirqs_off+0x62/0x220 [ 76.208040][ T1503] ? process_one_work+0x890/0x1790 [ 76.213466][ T1503] ? find_held_lock+0x35/0x130 [ 76.218264][ T1503] ? process_one_work+0x890/0x1790 [ 76.223382][ T1503] hci_power_on+0x10d/0x580 [ 76.227898][ T1503] ? hci_error_reset+0xf0/0xf0 [ 76.232670][ T1503] process_one_work+0x989/0x1790 [ 76.237605][ T1503] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.242981][ T1503] worker_thread+0x98/0xe40 [ 76.247489][ T1503] kthread+0x354/0x420 [ 76.251575][ T1503] ? process_one_work+0x1790/0x1790 [ 76.256795][ T1503] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 76.263038][ T1503] ret_from_fork+0x24/0x30 [ 76.268791][ T1503] Kernel Offset: disabled [ 76.273240][ T1503] Rebooting in 86400 seconds..