audit: type=1400 audit(1600863089.241:8): avc:  denied  { execmem } for  pid=6376 comm="syz-executor065" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
IPVS: ftp: loaded support on port[0] = 21
ntfs: (device loop0): is_boot_sector_ntfs(): Invalid end of sector marker.
==================================================================
BUG: KASAN: slab-out-of-bounds in ntfs_attr_find+0x8df/0xa10 fs/ntfs/attrib.c:613
Read of size 4 at addr ffff8880971a2480 by task syz-executor065/6377

CPU: 0 PID: 6377 Comm: syz-executor065 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x194 mm/kasan/report.c:351
 kasan_report mm/kasan/report.c:409 [inline]
 __asan_report_load_n_noabort+0x6b/0x80 mm/kasan/report.c:440
 ntfs_attr_find+0x8df/0xa10 fs/ntfs/attrib.c:613
 ntfs_attr_lookup+0xeca/0x1f30 fs/ntfs/attrib.c:1203
 ntfs_read_inode_mount+0x6b4/0x1fb0 fs/ntfs/inode.c:1867
 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: 0033:0x447cda
RSP: 002b:00007fff14bcd6b8 EFLAGS: 00000287 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fff14bcd710 RCX: 0000000000447cda
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff14bcd6d0
RBP: 0000000000000004 R08: 00007fff14bcd710 R09: 00007fff14bcd700
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000003
R13: 00007fff14bcd6d0 R14: 0000000000000000 R15: 0000000020000780

Allocated by task 6370:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
 kmem_cache_alloc+0x124/0x3c0 mm/slab.c:3552
 getname_flags+0xc8/0x550 fs/namei.c:138
 do_sys_open+0x1ce/0x410 fs/open.c:1075
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb

Freed by task 6370:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kmem_cache_free+0x7c/0x2b0 mm/slab.c:3758
 putname+0xcd/0x110 fs/namei.c:259
 do_sys_open+0x203/0x410 fs/open.c:1090
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb

The buggy address belongs to the object at ffff8880971a2cc0
 which belongs to the cache names_cache of size 4096
The buggy address is located 2112 bytes to the left of
 4096-byte region [ffff8880971a2cc0, ffff8880971a3cc0)
The buggy address belongs to the page:
page:ffffea00025c6880 count:1 mapcount:0 mapping:ffff8880971a2cc0 index:0x0 compound_mapcount: 0
flags: 0xfffe0000008100(slab|head)
raw: 00fffe0000008100 ffff8880971a2cc0 0000000000000000 0000000100000001
raw: ffffea00025c3320 ffffea00025c2120 ffff8880aa58ccc0 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880971a2380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880971a2400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880971a2480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff8880971a2500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880971a2580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================