[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 40.519647][ T26] audit: type=1800 audit(1547391674.437:25): pid=7851 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 40.557390][ T26] audit: type=1800 audit(1547391674.437:26): pid=7851 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 40.584885][ T26] audit: type=1800 audit(1547391674.447:27): pid=7851 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 '10.128.0.193' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.463648][ T1171] WARNING: CPU: 0 PID: 1171 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x93a/0xac0 [ 49.473333][ T1171] Kernel panic - not syncing: panic_on_warn set ... [ 49.479901][ T1171] CPU: 0 PID: 1171 Comm: kworker/u5:0 Not tainted 5.0.0-rc1-next-20190111 #10 [ 49.488715][ T1171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.498769][ T1171] Workqueue: hci0 hci_power_on [ 49.503504][ T1171] Call Trace: [ 49.506792][ T1171] dump_stack+0x1db/0x2d0 [ 49.511101][ T1171] ? dump_stack_print_info.cold+0x20/0x20 [ 49.516817][ T1171] ? tty_set_termios+0x8d0/0xac0 [ 49.521732][ T1171] panic+0x2cb/0x65c [ 49.525616][ T1171] ? add_taint.cold+0x16/0x16 [ 49.530275][ T1171] ? tty_set_termios+0x93a/0xac0 [ 49.535191][ T1171] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.541472][ T1171] ? __probe_kernel_read+0x1f4/0x250 [ 49.546734][ T1171] ? __warn.cold+0x5/0x48 [ 49.551041][ T1171] ? __warn+0xe8/0x1d0 [ 49.555086][ T1171] ? tty_set_termios+0x93a/0xac0 [ 49.559998][ T1171] __warn.cold+0x20/0x48 [ 49.564218][ T1171] ? tty_set_termios+0x93a/0xac0 [ 49.569131][ T1171] report_bug+0x263/0x2b0 [ 49.573440][ T1171] do_error_trap+0x11b/0x200 [ 49.578008][ T1171] do_invalid_op+0x37/0x50 [ 49.582400][ T1171] ? tty_set_termios+0x93a/0xac0 [ 49.587311][ T1171] invalid_op+0x14/0x20 [ 49.591447][ T1171] RIP: 0010:tty_set_termios+0x93a/0xac0 [ 49.596966][ T1171] 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 36 4b a6 fd <0f> 0b e9 a9 f7 ff ff e8 0a 9e ea fd e9 48 f9 ff ff 4c 89 ef e8 5d [ 49.616549][ T1171] RSP: 0018:ffff8880a75b7600 EFLAGS: 00010293 [ 49.622600][ T1171] RAX: ffff8880a75a0300 RBX: ffff8880a75b76c0 RCX: ffffffff83dbd90d [ 49.630550][ T1171] RDX: 0000000000000000 RSI: ffffffff83dbe16a RDI: 0000000000000005 [ 49.638497][ T1171] RBP: ffff8880a75b76e8 R08: ffff8880a75a0300 R09: fffffbfff181eef5 [ 49.646446][ T1171] R10: fffffbfff181eef4 R11: 0000000000000003 R12: ffff8880a75b7728 [ 49.654391][ T1171] R13: 0000000000010004 R14: 000000000001c200 R15: ffff8880949a1380 [ 49.662351][ T1171] ? tty_set_termios+0xdd/0xac0 [ 49.667177][ T1171] ? tty_set_termios+0x93a/0xac0 [ 49.672094][ T1171] ? save_trace+0xe0/0x290 [ 49.676487][ T1171] ? tty_wait_until_sent+0x5d0/0x5d0 [ 49.681749][ T1171] ? kasan_check_read+0x11/0x20 [ 49.686574][ T1171] ? __lock_acquire+0x24ed/0x4a10 [ 49.691578][ T1171] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.697794][ T1171] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 49.703844][ T1171] hci_uart_set_baudrate+0x1cc/0x250 [ 49.709232][ T1171] ? hci_uart_set_speeds+0x90/0x90 [ 49.714328][ T1171] ? hci_send_monitor_ctrl_event+0x520/0x520 [ 49.720292][ T1171] ? find_held_lock+0x35/0x120 [ 49.725036][ T1171] hci_uart_setup+0xa2/0x490 [ 49.729602][ T1171] ? hci_uart_set_baudrate+0x250/0x250 [ 49.735036][ T1171] hci_dev_do_open+0x6b1/0x1920 [ 49.739863][ T1171] ? hci_rx_work+0xcd0/0xcd0 [ 49.744431][ T1171] ? process_one_work+0xbf1/0x1ce0 [ 49.749518][ T1171] ? find_held_lock+0x35/0x120 [ 49.754256][ T1171] ? add_lock_to_list.isra.0+0x450/0x450 [ 49.759877][ T1171] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.766091][ T1171] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.772454][ T1171] ? check_preemption_disabled+0x48/0x290 [ 49.778154][ T1171] hci_power_on+0x10d/0x880 [ 49.782634][ T1171] ? hci_error_reset+0xf0/0xf0 [ 49.787371][ T1171] ? __lock_is_held+0xb6/0x140 [ 49.792118][ T1171] process_one_work+0xd0c/0x1ce0 [ 49.797037][ T1171] ? __wake_up_common_lock+0x1db/0x390 [ 49.802477][ T1171] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 49.807828][ T1171] ? trace_hardirqs_off+0xb8/0x310 [ 49.812916][ T1171] ? kasan_check_read+0x11/0x20 [ 49.817744][ T1171] ? do_raw_spin_unlock+0xa0/0x330 [ 49.822829][ T1171] ? do_raw_spin_trylock+0x270/0x270 [ 49.828099][ T1171] ? __wake_up_common+0x7d0/0x7d0 [ 49.833099][ T1171] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.839319][ T1171] ? wq_watchdog_reset_touched+0x180/0x180 [ 49.845098][ T1171] ? trace_hardirqs_on_caller+0x310/0x310 [ 49.850801][ T1171] worker_thread+0x143/0x14a0 [ 49.855462][ T1171] ? process_one_work+0x1ce0/0x1ce0 [ 49.860633][ T1171] ? __kthread_parkme+0xc3/0x1b0 [ 49.865551][ T1171] ? lock_acquire+0x1db/0x570 [ 49.870225][ T1171] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 49.876008][ T1171] ? lockdep_hardirqs_on+0x415/0x5d0 [ 49.881278][ T1171] ? trace_hardirqs_on+0xbd/0x310 [ 49.886293][ T1171] ? kasan_check_read+0x11/0x20 [ 49.891118][ T1171] ? __kthread_parkme+0xc3/0x1b0 [ 49.896032][ T1171] ? trace_hardirqs_off_caller+0x300/0x300 [ 49.901813][ T1171] ? do_raw_spin_trylock+0x270/0x270 [ 49.907074][ T1171] ? schedule+0x108/0x350 [ 49.911387][ T1171] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 49.917168][ T1171] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 49.923381][ T1171] ? __kthread_parkme+0xfb/0x1b0 [ 49.928302][ T1171] kthread+0x357/0x430 [ 49.932349][ T1171] ? process_one_work+0x1ce0/0x1ce0 [ 49.937519][ T1171] ? kthread_stop+0x920/0x920 [ 49.942173][ T1171] ret_from_fork+0x3a/0x50 [ 49.947612][ T1171] Kernel Offset: disabled [ 49.951973][ T1171] Rebooting in 86400 seconds..