ntfs3: loop4: Different NTFS' sector size (4096) and media sector size (512)
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BUG: KASAN: slab-out-of-bounds in ntfs_trim_fs+0x84f/0x950 fs/ntfs3/bitmap.c:1434
Read of size 2 at addr ffff88807cc73fa2 by task syz-executor.4/5182

CPU: 0 PID: 5182 Comm: syz-executor.4 Not tainted 6.1.0-rc8-syzkaller-00148-g0d1409e4ff08 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x15e/0x45d mm/kasan/report.c:395
 kasan_report+0xbf/0x1f0 mm/kasan/report.c:495
 ntfs_trim_fs+0x84f/0x950 fs/ntfs3/bitmap.c:1434
 ntfs_ioctl_fitrim+0x23e/0x340 fs/ntfs3/file.c:40
 ntfs_ioctl+0xa0/0xe0 fs/ntfs3/file.c:57
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fab6468c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fab65497168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fab647abf80 RCX: 00007fab6468c0d9
RDX: 0000000020000200 RSI: 00000000c0185879 RDI: 0000000000000004
RBP: 00007fab646e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc4b8af47f R14: 00007fab65497300 R15: 0000000000022000
 </TASK>

Allocated by task 5182:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:371 [inline]
 ____kasan_kmalloc mm/kasan/common.c:330 [inline]
 __kasan_kmalloc+0xa5/0xb0 mm/kasan/common.c:380
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:955 [inline]
 __kmalloc+0x5a/0xd0 mm/slab_common.c:968
 kmalloc_array include/linux/slab.h:605 [inline]
 kcalloc include/linux/slab.h:636 [inline]
 wnd_init+0x2ff/0x460 fs/ntfs3/bitmap.c:664
 ntfs_fill_super+0x2696/0x37f0 fs/ntfs3/super.c:1118
 get_tree_bdev+0x444/0x760 fs/super.c:1324
 vfs_get_tree+0x8d/0x2f0 fs/super.c:1531
 do_new_mount fs/namespace.c:3040 [inline]
 path_mount+0x132a/0x1e20 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount fs/namespace.c:3568 [inline]
 __x64_sys_mount+0x283/0x300 fs/namespace.c:3568
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88807cc73fa0
 which belongs to the cache kmalloc-8 of size 8
The buggy address is located 2 bytes inside of
 8-byte region [ffff88807cc73fa0, ffff88807cc73fa8)

The buggy address belongs to the physical page:
page:ffffea0001f31cc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7cc73
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 0000000000000000 dead000000000122 ffff888012041280
raw: 0000000000000000 0000000000660066 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 3681, tgid 3681 (syz-executor.2), ts 317997962404, free_ts 317997814773
 prep_new_page mm/page_alloc.c:2539 [inline]
 get_page_from_freelist+0x10b5/0x2d50 mm/page_alloc.c:4291
 __alloc_pages+0x1cb/0x5b0 mm/page_alloc.c:5558
 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2285
 alloc_slab_page mm/slub.c:1794 [inline]
 allocate_slab+0x25f/0x350 mm/slub.c:1939
 new_slab mm/slub.c:1992 [inline]
 ___slab_alloc+0xa91/0x1400 mm/slub.c:3180
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3279
 slab_alloc_node mm/slub.c:3364 [inline]
 __kmem_cache_alloc_node+0x199/0x3e0 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:954 [inline]
 __kmalloc_node+0x4d/0xd0 mm/slab_common.c:962
 kmalloc_node include/linux/slab.h:579 [inline]
 __vmalloc_area_node mm/vmalloc.c:3029 [inline]
 __vmalloc_node_range+0xa11/0x13c0 mm/vmalloc.c:3213
 __vmalloc_node mm/vmalloc.c:3278 [inline]
 vzalloc+0x6b/0x80 mm/vmalloc.c:3351
 xt_counters_alloc+0x50/0x70 net/netfilter/x_tables.c:1379
 __do_replace+0x9a/0x900 net/ipv4/netfilter/arp_tables.c:894
 do_replace net/ipv6/netfilter/ip6_tables.c:1157 [inline]
 do_ip6t_set_ctl+0x8a9/0xb30 net/ipv6/netfilter/ip6_tables.c:1639
 nf_setsockopt+0x87/0xe0 net/netfilter/nf_sockopt.c:101
 ipv6_setsockopt+0x12b/0x190 net/ipv6/ipv6_sockglue.c:1030
 tcp_setsockopt+0x9f/0x100 net/ipv4/tcp.c:3800
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1459 [inline]
 free_pcp_prepare+0x65c/0xd90 mm/page_alloc.c:1509
 free_unref_page_prepare mm/page_alloc.c:3387 [inline]
 free_unref_page+0x1d/0x4d0 mm/page_alloc.c:3483
 __vunmap+0x85d/0xd30 mm/vmalloc.c:2713
 __vfree+0x3c/0xd0 mm/vmalloc.c:2761
 vfree+0x5e/0x90 mm/vmalloc.c:2792
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:884 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1041 [inline]
 do_ip6t_get_ctl+0x833/0xa10 net/ipv6/netfilter/ip6_tables.c:1672
 nf_getsockopt+0x76/0xd0 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x1ef/0x2a0 net/ipv6/ipv6_sockglue.c:1513
 tcp_getsockopt+0x99/0x100 net/ipv4/tcp.c:4401
 __sys_getsockopt+0x21a/0x6a0 net/socket.c:2296
 __do_sys_getsockopt net/socket.c:2311 [inline]
 __se_sys_getsockopt net/socket.c:2308 [inline]
 __x64_sys_getsockopt+0xbe/0x160 net/socket.c:2308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff88807cc73e80: fc 05 fc fc fc fc 05 fc fc fc fc 05 fc fc fc fc
 ffff88807cc73f00: 05 fc fc fc fc fa fc fc fc fc 00 fc fc fc fc 02
>ffff88807cc73f80: fc fc fc fc 02 fc fc fc fc 07 fc fc fc fc fc fc
                               ^
 ffff88807cc74000: fa fb fb fb fb fb fb fb fb fb fc fc fc fc fa fb
 ffff88807cc74080: fb fb fb fb fb fb fb fb fc fc fc fc fa fb fb fb
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