audit: type=1400 audit(1579998717.962:36): avc:  denied  { map } for  pid=7264 comm="syz-executor736" path="/root/syz-executor736174281" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
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: 2391 Comm: kworker/u4:4 Not tainted 4.14.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound flush_to_ldisc
task: ffff8880a168e340 task.stack: ffff8880a16a0000
RIP: 0010:do_con_write.part.0+0x7d6/0x1b50 drivers/tty/vt/vt.c:2398
RSP: 0018:ffff8880a16a7858 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88808761073d
RBP: ffff8880a16a79a8 R08: ffff8880a168e340 R09: 0000000000000000
R10: 0000000000000000 R11: ffff8880a168e340 R12: dffffc0000000000
R13: 000000000000075e R14: ffff88808761074c R15: ffff8880876103c0
FS:  0000000000000000(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f294e350000 CR3: 0000000091d8f000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_con_write drivers/tty/vt/vt.c:2798 [inline]
 con_put_char+0xb8/0xc0 drivers/tty/vt/vt.c:2797
 tty_put_char+0xac/0x130 drivers/tty/tty_io.c:2879
 __process_echoes+0x495/0x8a0 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+0x8ed/0x2570 drivers/tty/n_tty.c:1742
 n_tty_receive_buf2+0x34/0x40 drivers/tty/n_tty.c:1777
 tty_ldisc_receive_buf+0xa5/0x1a0 drivers/tty/tty_buffer.c:455
 tty_port_default_receive_buf+0x73/0xa0 drivers/tty/tty_port.c:37
 receive_buf drivers/tty/tty_buffer.c:475 [inline]
 flush_to_ldisc+0x1ec/0x400 drivers/tty/tty_buffer.c:527
 process_one_work+0x863/0x1600 kernel/workqueue.c:2114
 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
 kthread+0x319/0x430 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 66 44 03 ad 30 ff ff ff e8 38 3c 0b fe 48 8b 85 f0 fe ff ff 80 38 00 0f 85 97 11 00 00 49 8b 9f 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+0x7d6/0x1b50 drivers/tty/vt/vt.c:2398 RSP: ffff8880a16a7858
---[ end trace 249c94aef35fcab9 ]---