[ 47.077723] audit: type=1800 audit(1556134382.717:30): pid=7778 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 51.549381] kauditd_printk_skb: 4 callbacks suppressed [ 51.549397] audit: type=1400 audit(1556134387.237:35): avc: denied { map } for pid=7953 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.137' (ECDSA) to the list of known hosts. executing program [ 58.283858] audit: type=1400 audit(1556134393.967:36): avc: denied { map } for pid=7965 comm="syz-executor579" path="/root/syz-executor579742190" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 58.317466] WARNING: CPU: 1 PID: 1276 at drivers/tty/tty_ioctl.c:319 tty_set_termios+0x7a9/0x8d0 [ 58.326467] Kernel panic - not syncing: panic_on_warn set ... [ 58.326467] [ 58.333911] CPU: 1 PID: 1276 Comm: kworker/u5:0 Not tainted 4.19.36 #4 [ 58.340648] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.350107] Workqueue: hci0 hci_power_on [ 58.354161] Call Trace: [ 58.356753] dump_stack+0x172/0x1f0 [ 58.360395] panic+0x263/0x51d [ 58.363584] ? __warn_printk+0xf3/0xf3 [ 58.367460] ? tty_set_termios+0x7a9/0x8d0 [ 58.371696] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.377221] ? __warn.cold+0x5/0x54 [ 58.380856] ? __warn+0xe8/0x1d0 [ 58.384214] ? tty_set_termios+0x7a9/0x8d0 [ 58.388434] __warn.cold+0x20/0x54 [ 58.391959] ? tty_set_termios+0x7a9/0x8d0 [ 58.396194] report_bug+0x263/0x2b0 [ 58.399851] do_error_trap+0x204/0x360 [ 58.403726] ? math_error+0x340/0x340 [ 58.407536] ? error_entry+0x76/0xd0 [ 58.411276] ? trace_hardirqs_off_caller+0x65/0x220 [ 58.416496] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 58.421349] do_invalid_op+0x1b/0x20 [ 58.425064] invalid_op+0x14/0x20 [ 58.428506] RIP: 0010:tty_set_termios+0x7a9/0x8d0 [ 58.433331] 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 37 6f 05 fe <0f> 0b e9 3a f9 ff ff e8 7b d0 3b fe e9 d2 fa ff ff e8 71 d0 3b fe [ 58.452236] RSP: 0018:ffff8880a64d7990 EFLAGS: 00010293 [ 58.457587] RAX: ffff8880a64c8040 RBX: ffff8880a64d7a50 RCX: ffffffff8365cf0d [ 58.464842] RDX: 0000000000000000 RSI: ffffffff8365d5d9 RDI: 0000000000000005 [ 58.472109] RBP: ffff8880a64d7a78 R08: ffff8880a64c8040 R09: fffffbfff15dc9b1 [ 58.479374] R10: fffffbfff15dc9b0 R11: 0000000000000003 R12: ffff8880a64d7ab8 [ 58.486638] R13: 0000000000010004 R14: 1ffff11014c9af51 R15: ffff88808a1c4280 [ 58.493919] ? tty_set_termios+0xdd/0x8d0 [ 58.498051] ? tty_set_termios+0x7a9/0x8d0 [ 58.502283] ? tty_wait_until_sent+0x580/0x580 [ 58.506855] ? __mutex_lock+0x3cd/0x1300 [ 58.510919] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.516449] ? tty_termios_encode_baud_rate+0x3ca/0x4e0 [ 58.521841] hci_uart_set_baudrate+0x157/0x1c0 [ 58.526413] ? hci_uart_set_speeds+0x90/0x90 [ 58.530841] ? debug_object_deactivate+0x1e4/0x360 [ 58.535757] hci_uart_setup+0xa2/0x490 [ 58.539633] ? hci_uart_set_baudrate+0x1c0/0x1c0 [ 58.544377] hci_dev_do_open+0x67e/0x14b0 [ 58.548512] ? hci_rx_work+0xaa0/0xaa0 [ 58.552394] ? kasan_check_read+0x11/0x20 [ 58.556553] ? process_one_work+0x890/0x1760 [ 58.560958] ? find_held_lock+0x35/0x130 [ 58.565101] hci_power_on+0x10d/0x580 [ 58.568918] ? hci_error_reset+0xf0/0xf0 [ 58.572964] ? __lock_is_held+0xb6/0x140 [ 58.577030] process_one_work+0x98e/0x1760 [ 58.581257] ? pwq_dec_nr_in_flight+0x320/0x320 [ 58.585912] ? kasan_check_write+0x14/0x20 [ 58.590158] ? do_raw_spin_lock+0xc8/0x240 [ 58.594400] worker_thread+0x98/0xe40 [ 58.598270] kthread+0x357/0x430 [ 58.601622] ? process_one_work+0x1760/0x1760 [ 58.606102] ? kthread_delayed_work_timer_fn+0x290/0x290 [ 58.611551] ret_from_fork+0x3a/0x50 [ 58.616231] Kernel Offset: disabled [ 58.619910] Rebooting in 86400 seconds..