device gre0 left promiscuous mode kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: device gre0 entered promiscuous mode (ftrace buffer empty) Modules linked in: CPU: 0 PID: 55 Comm: kworker/u4:3 Not tainted 4.15.0-rc6+ #158 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound flush_to_ldisc RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline] RIP: 0010:n_tty_receive_buf_common+0x154/0x2520 drivers/tty/n_tty.c:1688 RSP: 0018:ffff8801d9acf170 EFLAGS: 00010202 RAX: 000000000000044c RBX: ffff8801d0dcd200 RCX: ffffffff828fb7ff RDX: 0000000000000000 RSI: ffff8801d0dcd5a8 RDI: 0000000000002260 RBP: ffff8801d9acf318 R08: 1ffff1003b359d5d R09: 0000000000000005 R10: ffff8801d9acefa8 R11: 0000000000000002 R12: ffff8801d4ebbbad R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8801d4ebbbad FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020003000 CR3: 0000000006822004 CR4: 00000000001626f0 Call Trace: n_tty_receive_buf2+0x33/0x40 drivers/tty/n_tty.c:1744 tty_ldisc_receive_buf+0xa7/0x180 drivers/tty/tty_buffer.c:456 tty_port_default_receive_buf+0x106/0x160 drivers/tty/tty_port.c:38 receive_buf drivers/tty/tty_buffer.c:475 [inline] flush_to_ldisc+0x3c4/0x590 drivers/tty/tty_buffer.c:524 process_one_work+0xbbf/0x1b10 kernel/workqueue.c:2112 worker_thread+0x223/0x1990 kernel/workqueue.c:2246 kthread+0x33c/0x400 kernel/kthread.c:238 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:524 Code: 89 85 18 ff ff ff 48 8d 45 98 48 89 85 e0 fe ff ff e8 81 5f e0 fe 48 8b 85 18 ff ff ff c6 00 00 48 8b 85 a0 fe ff ff 48 c1 e8 03 <42> 80 3c 30 00 0f 85 73 1e 00 00 48 8b 85 28 ff ff ff 4c 8b a8 RIP: __read_once_size include/linux/compiler.h:183 [inline] RSP: ffff8801d9acf170 RIP: n_tty_receive_buf_common+0x154/0x2520 drivers/tty/n_tty.c:1688 RSP: ffff8801d9acf170 ---[ end trace 99ce100eedf8ce2e ]--- device gre0 left promiscuous mode Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..