[ 36.453178] audit: type=1800 audit(1550526735.366:26): pid=7550 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 36.480741] audit: type=1800 audit(1550526735.376:27): pid=7550 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 36.507285] audit: type=1800 audit(1550526735.376:28): pid=7550 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. [ 37.305499] audit: type=1800 audit(1550526736.256:29): pid=7550 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 '10.128.0.244' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 44.353396] WARNING: CPU: 0 PID: 1172 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x7a9/0x8d0 [ 44.362415] Kernel panic - not syncing: panic_on_warn set ... [ 44.368286] CPU: 0 PID: 1172 Comm: kworker/u5:0 Not tainted 5.0.0-rc7 #77 [ 44.375192] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.384532] Workqueue: hci0 hci_power_on [ 44.388585] Call Trace: [ 44.391154] dump_stack+0x172/0x1f0 [ 44.394764] ? tty_set_termios+0x700/0x8d0 [ 44.398983] panic+0x2cb/0x65c [ 44.402161] ? __warn_printk+0xf3/0xf3 [ 44.406034] ? tty_set_termios+0x7a9/0x8d0 [ 44.410253] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.415771] ? __warn.cold+0x5/0x45 [ 44.419381] ? __warn+0xe8/0x1d0 [ 44.422730] ? tty_set_termios+0x7a9/0x8d0 [ 44.426947] __warn.cold+0x20/0x45 [ 44.430468] ? tty_set_termios+0x7a9/0x8d0 [ 44.434686] report_bug+0x263/0x2b0 [ 44.438320] do_error_trap+0x11b/0x200 [ 44.442194] do_invalid_op+0x37/0x50 [ 44.445888] ? tty_set_termios+0x7a9/0x8d0 [ 44.450110] invalid_op+0x14/0x20 [ 44.453552] RIP: 0010:tty_set_termios+0x7a9/0x8d0 [ 44.458384] 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 47 fe ff ff e8 d7 3f 03 fe <0f> 0b e9 3a f9 ff ff e8 db 3e 3a fe e9 d2 fa ff ff e8 d1 3e 3a fe [ 44.477268] RSP: 0000:ffff8880a7897990 EFLAGS: 00010293 [ 44.482613] RAX: ffff8880a7fb8340 RBX: ffff8880a7897a50 RCX: ffffffff836c9add [ 44.489862] RDX: 0000000000000000 RSI: ffffffff836ca1a9 RDI: 0000000000000005 [ 44.497116] RBP: ffff8880a7897a78 R08: ffff8880a7fb8340 R09: fffffbfff161bcad [ 44.504367] R10: fffffbfff161bcac R11: 0000000000000003 R12: ffff8880a7897ab8 [ 44.511617] R13: 0000000000010004 R14: 1ffff11014f12f51 R15: ffff88809140eac0 [ 44.518875] ? tty_set_termios+0xdd/0x8d0 [ 44.523001] ? tty_set_termios+0x7a9/0x8d0 [ 44.527223] ? tty_wait_until_sent+0x580/0x580 [ 44.531792] ? __mutex_lock+0x3cd/0x1310 [ 44.535839] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.541356] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 44.546706] hci_uart_set_baudrate+0x157/0x1c0 [ 44.551272] ? hci_uart_set_speeds+0x90/0x90 [ 44.555684] ? debug_object_deactivate+0x1e4/0x360 [ 44.560604] hci_uart_setup+0xa2/0x490 [ 44.564475] ? hci_uart_set_baudrate+0x1c0/0x1c0 [ 44.569213] hci_dev_do_open+0x67e/0x14b0 [ 44.573344] ? hci_rx_work+0xaa0/0xaa0 [ 44.577219] ? kasan_check_read+0x11/0x20 [ 44.581350] ? process_one_work+0x890/0x1790 [ 44.585739] ? find_held_lock+0x35/0x130 [ 44.589786] hci_power_on+0x10d/0x580 [ 44.593591] ? hci_error_reset+0xf0/0xf0 [ 44.597634] ? __lock_is_held+0xb6/0x140 [ 44.601675] ? check_preemption_disabled+0x48/0x290 [ 44.606679] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 44.612115] process_one_work+0x98e/0x1790 [ 44.616338] ? pwq_dec_nr_in_flight+0x320/0x320 [ 44.620995] worker_thread+0x98/0xe40 [ 44.624792] kthread+0x357/0x430 [ 44.628139] ? process_one_work+0x1790/0x1790 [ 44.632636] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 44.638158] ret_from_fork+0x3a/0x50 [ 44.642951] Kernel Offset: disabled [ 44.646619] Rebooting in 86400 seconds..