audit: type=1400 audit(1575365376.404:36): avc:  denied  { map } for  pid=7164 comm="syz-executor856" path="/root/syz-executor856563590" 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: 1 PID: 7164 Comm: syz-executor856 Not tainted 4.14.157-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888084eb8400 task.stack: ffff888083818000
RIP: 0010:do_con_write.part.0+0x7d6/0x1b50 drivers/tty/vt/vt.c:2398
RSP: 0018:ffff88808381f840 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88809ec52c7d
RBP: ffff88808381f990 R08: ffffffff870e59e8 R09: 0000000000000000
R10: 0000000000000000 R11: ffff888084eb8400 R12: dffffc0000000000
R13: 00000000000007fe R14: ffff88809ec52c8c R15: ffff88809ec52900
FS:  000000000181c880(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc5a9d1a000 CR3: 00000000a7ca0000 CR4: 00000000001406e0
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+0x2ce/0x8a0 drivers/tty/n_tty.c:708
 flush_echoes drivers/tty/n_tty.c:829 [inline]
 __receive_buf drivers/tty/n_tty.c:1648 [inline]
 n_tty_receive_buf_common+0x998/0x2410 drivers/tty/n_tty.c:1742
 n_tty_receive_buf+0x31/0x3b drivers/tty/n_tty.c:1771
 tiocsti drivers/tty/tty_io.c:2186 [inline]
 tty_ioctl+0xded/0x1320 drivers/tty/tty_io.c:2572
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x7ae/0x1060 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x444099
RSP: 002b:00007ffd0e53c318 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444099
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00000000006ce018 R08: 00000000004002e0 R09: 00000000004002e0
R10: 000000000000000f R11: 0000000000000246 R12: 0000000000401da0
R13: 0000000000401e30 R14: 0000000000000000 R15: 0000000000000000
Code: 66 44 03 ad 30 ff ff ff e8 68 a2 0f 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: ffff88808381f840
---[ end trace d4335c0ded3617ee ]---