[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.150' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 38.588565] audit: type=1400 audit(1588184650.998:8): avc: denied { execmem } for pid=6336 comm="syz-executor815" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 38.630759] ------------[ cut here ]------------ [ 38.635778] WARNING: CPU: 1 PID: 1191 at drivers/tty/tty_ioctl.c:318 tty_set_termios+0x71e/0x840 [ 38.644709] Kernel panic - not syncing: panic_on_warn set ... [ 38.644709] [ 38.652198] CPU: 1 PID: 1191 Comm: kworker/u5:0 Not tainted 4.14.177-syzkaller #0 [ 38.659813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.669171] Workqueue: hci0 hci_power_on [ 38.673239] Call Trace: [ 38.675841] dump_stack+0x13e/0x194 [ 38.679459] panic+0x1f9/0x42d [ 38.682636] ? add_taint.cold+0x16/0x16 [ 38.686598] ? tty_set_termios+0x71e/0x840 [ 38.691401] ? tty_set_termios+0x71e/0x840 [ 38.695823] __warn.cold+0x2f/0x30 [ 38.699441] ? ist_end_non_atomic+0x10/0x10 [ 38.703748] ? tty_set_termios+0x71e/0x840 [ 38.708410] report_bug+0x20a/0x248 [ 38.712044] do_error_trap+0x195/0x2d0 [ 38.715923] ? math_error+0x2d0/0x2d0 [ 38.719708] ? trace_hardirqs_on+0x10/0x10 [ 38.723922] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.728750] invalid_op+0x1b/0x40 [ 38.732191] RIP: 0010:tty_set_termios+0x71e/0x840 [ 38.737196] RSP: 0018:ffff8880a79afb28 EFLAGS: 00010297 [ 38.742978] RAX: ffff8880a79a0400 RBX: 1ffff11014f35f68 RCX: 0000000000000000 [ 38.750261] RDX: 0000000000000000 RSI: ffff8880a79afc28 RDI: ffff888218ecb038 [ 38.758726] RBP: ffff8880a79afc28 R08: dffffc0000000000 R09: ffff8880a79aff18 [ 38.765973] R10: ffff8880a79afcd8 R11: ffff8880a79a0400 R12: ffff888218ecb000 [ 38.773328] R13: 000000000001c200 R14: 000000000001c200 R15: ffff888099cda040 [ 38.780626] ? tty_set_termios+0x71e/0x840 [ 38.784867] ? tty_wait_until_sent+0x460/0x460 [ 38.789427] ? __mutex_lock+0x36a/0x1470 [ 38.793480] ? tty_termios_encode_baud_rate+0x300/0x410 [ 38.798823] hci_uart_set_baudrate+0x13f/0x190 [ 38.803556] ? hci_uart_set_speeds+0x90/0x90 [ 38.807957] hci_uart_setup+0x8c/0x410 [ 38.811822] ? hci_uart_set_baudrate+0x190/0x190 [ 38.816556] hci_dev_do_open+0x546/0xf10 [ 38.820692] ? __lock_is_held+0xad/0x140 [ 38.824732] hci_power_on+0x88/0x3d0 [ 38.828422] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 38.833854] process_one_work+0x813/0x1540 [ 38.838069] ? pwq_dec_nr_in_flight+0x2b0/0x2b0 [ 38.842718] worker_thread+0x5d1/0x1070 [ 38.846675] ? process_one_work+0x1540/0x1540 [ 38.851157] kthread+0x30d/0x420 [ 38.854500] ? kthread_create_on_node+0xd0/0xd0 [ 38.859160] ret_from_fork+0x24/0x30 [ 38.864208] Kernel Offset: disabled [ 38.867930] Rebooting in 86400 seconds..