audit: type=1400 audit(1575352211.729:36): avc:  denied  { map } for  pid=7661 comm="syz-executor802" path="/root/syz-executor802398089" 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
CPU: 0 PID: 7661 Comm: syz-executor802 Not tainted 4.19.87-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_con_write.part.0+0xa03/0x1eb0 drivers/tty/vt/vt.c:2736
Code: 76 fe ff ff 41 01 dd e8 eb 0f bd fd 48 8b 85 a8 fe ff ff 80 38 00 0f 85 fe 12 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 85
RSP: 0018:ffff888094e77748 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83ae0408
RDX: 0000000000000000 RSI: ffffffff83ae0455 RDI: 0000000000000003
RBP: ffff888094e778e0 R08: ffff888095aa8640 R09: 0000000000000004
R10: ffffed1015d04732 R11: ffff8880ae823993 R12: dffffc0000000000
R13: 00000000000007fe R14: ffff888082643540 R15: ffff8880826438cc
FS:  0000000001cce880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4e4432e000 CR3: 000000008e58c000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_con_write drivers/tty/vt/vt.c:3121 [inline]
 con_put_char+0xfa/0x110 drivers/tty/vt/vt.c:3120
 tty_put_char+0xc5/0x160 drivers/tty/tty_io.c:2887
 __process_echoes+0x37c/0xa40 drivers/tty/n_tty.c:706
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xc13/0x28e0 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2194 [inline]
 tty_ioctl+0xe91/0x1510 drivers/tty/tty_io.c:2580
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x444099
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffdf92ed988 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
Modules linked in:
---[ end trace 1c430a8aee3c1bbb ]---
RIP: 0010:do_con_write.part.0+0xa03/0x1eb0 drivers/tty/vt/vt.c:2736
Code: 76 fe ff ff 41 01 dd e8 eb 0f bd fd 48 8b 85 a8 fe ff ff 80 38 00 0f 85 fe 12 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 85
RSP: 0018:ffff888094e77748 EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83ae0408
RDX: 0000000000000000 RSI: ffffffff83ae0455 RDI: 0000000000000003
RBP: ffff888094e778e0 R08: ffff888095aa8640 R09: 0000000000000004
R10: ffffed1015d04732 R11: ffff8880ae823993 R12: dffffc0000000000
R13: 00000000000007fe R14: ffff888082643540 R15: ffff8880826438cc
FS:  0000000001cce880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4e4432e000 CR3: 000000008e58c000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400