kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 15671 Comm: syz-executor.1 Not tainted 4.14.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880578e8080 task.stack: ffff88820c570000
RIP: 0010:do_con_write.part.0+0x78e/0x1a20 drivers/tty/vt/vt.c:2411
RSP: 0018:ffff88820c577660 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffc9000848d000
RDX: 00000000000001e8 RSI: ffffffff833fefe2 RDI: ffff88809743097d
RBP: 000000000000075e R08: 0000000000000001 R09: 0000000000000000
R10: ffff8880578e89f8 R11: ffff8880578e8080 R12: dffffc0000000000
R13: ffff88809743098c R14: ffff888097430600 R15: ffff88820c5777d9
FS:  00007fe80bb7e700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe80bb5cdb8 CR3: 000000002cd03000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_con_write drivers/tty/vt/vt.c:2809 [inline]
 con_put_char+0xb4/0xc0 drivers/tty/vt/vt.c:2808
 tty_put_char+0xa3/0x120 drivers/tty/tty_io.c:2879
 __process_echoes+0x489/0x8c0 drivers/tty/n_tty.c:728
 flush_echoes drivers/tty/n_tty.c:829 [inline]
 __receive_buf drivers/tty/n_tty.c:1648 [inline]
 n_tty_receive_buf_common+0x940/0x2490 drivers/tty/n_tty.c:1742
 tty_ldisc_receive_buf+0x9e/0x170 drivers/tty/tty_buffer.c:455
 paste_selection+0x1cc/0x414 drivers/tty/vt/selection.c:391
 tioclinux+0xfd/0x400 drivers/tty/vt/vt.c:2707
 vt_ioctl+0x14e8/0x1f20 drivers/tty/vt/vt_ioctl.c:372
 tty_ioctl+0x6c9/0x1220 drivers/tty/tty_io.c:2661
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45c1d9
RSP: 002b:00007fe80bb7dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000017480 RCX: 000000000045c1d9
RDX: 0000000020000080 RSI: 000000000000541c RDI: 0000000000000003
RBP: 000000000078bfe0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bfac
R13: 00007fffda3123cf R14: 00007fe80bb7e9c0 R15: 000000000078bfac
Code: 24 b2 00 00 00 66 03 6c 24 38 e8 fe b5 1a fe 48 8b 44 24 78 80 38 00 0f 85 d2 10 00 00 49 8b 9e a0 03 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 20 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 
RIP: do_con_write.part.0+0x78e/0x1a20 drivers/tty/vt/vt.c:2411 RSP: ffff88820c577660
---[ end trace b10394ea16f9ea3d ]---