audit: type=1400 audit(1601217710.049:8): avc:  denied  { execmem } for  pid=6359 comm="syz-executor133" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
ntfs: (device loop0): is_boot_sector_ntfs(): Invalid end of sector marker.
------------[ cut here ]------------
kernel BUG at fs/ntfs/aops.c:207!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 6359 Comm: syz-executor133 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880976c6180 task.stack: ffff888097910000
RIP: 0010:ntfs_read_block fs/ntfs/aops.c:207 [inline]
RIP: 0010:ntfs_readpage+0x14c7/0x1a70 fs/ntfs/aops.c:456
RSP: 0018:ffff888097917780 EFLAGS: 00010297
RAX: ffff8880976c6180 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffea00020f13c0 RDI: ffff88808970b790
RBP: ffff88808970b788 R08: 0000000000000000 R09: ffff88808970bc18
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
R13: ffff88808970b740 R14: ffff88808970ba08 R15: ffffea00020f13c0
FS:  0000000001496880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bedd13dda8 CR3: 00000000a0e0c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_read_cache_page+0x38e/0xbb0 mm/filemap.c:2713
 read_mapping_page include/linux/pagemap.h:398 [inline]
 ntfs_map_page fs/ntfs/aops.h:89 [inline]
 map_mft_record_page fs/ntfs/mft.c:85 [inline]
 map_mft_record+0x1ca/0xbe0 fs/ntfs/mft.c:168
 ntfs_read_locked_inode+0x1bf/0x5000 fs/ntfs/inode.c:582
 ntfs_read_inode_mount+0xa89/0x1fb0 fs/ntfs/inode.c:2109
 ntfs_fill_super+0x9a6/0x7170 fs/ntfs/super.c:2871
 mount_bdev+0x2b3/0x360 fs/super.c:1134
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0xe53/0x2a00 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3072
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x446e9a
RSP: 002b:00007ffe83f9d068 EFLAGS: 00000287 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe83f9d0c0 RCX: 0000000000446e9a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe83f9d080
RBP: 00007ffe83f9d080 R08: 00007ffe83f9d0c0 R09: 00007ffe00000015
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000008
R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003
Code: 89 04 00 00 49 83 be 88 fd ff ff 00 0f 85 3e f5 ff ff e8 5d 59 4c ff 49 8b 86 80 fd ff ff a8 08 0f 85 2a f5 ff ff e8 49 59 4c ff <0f> 0b e8 42 59 4c ff 48 8b 84 24 88 00 00 00 48 8d b8 c0 fd ff 
RIP: ntfs_read_block fs/ntfs/aops.c:207 [inline] RSP: ffff888097917780
RIP: ntfs_readpage+0x14c7/0x1a70 fs/ntfs/aops.c:456 RSP: ffff888097917780
---[ end trace fc62237733bb3191 ]---