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BUG: KASAN: use-after-free in memcmp lib/string.c:681 [inline]
BUG: KASAN: use-after-free in bcmp+0xc0/0x1e0 lib/string.c:713
Read of size 8 at addr ffff88804fd23002 by task syz-executor.5/9070

CPU: 0 PID: 9070 Comm: syz-executor.5 Not tainted 6.6.0-rc6-syzkaller-00039-g06dc10eae55b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:475
 kasan_report+0x175/0x1b0 mm/kasan/report.c:588
 memcmp lib/string.c:681 [inline]
 bcmp+0xc0/0x1e0 lib/string.c:713
 ntfs_init_from_boot fs/ntfs3/super.c:858 [inline]
 ntfs_fill_super+0x9c2/0x4c50 fs/ntfs3/super.c:1139
 get_tree_bdev+0x416/0x5b0 fs/super.c:1577
 vfs_get_tree+0x8c/0x280 fs/super.c:1750
 do_new_mount+0x28f/0xae0 fs/namespace.c:3335
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f000b87e1ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f000c650ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f000c650f80 RCX: 00007f000b87e1ea
RDX: 0000000020000100 RSI: 00000000200000c0 RDI: 00007f000c650f40
RBP: 0000000020000100 R08: 00007f000c650f80 R09: 0000000000804098
R10: 0000000000804098 R11: 0000000000000202 R12: 00000000200000c0
R13: 00007f000c650f40 R14: 000000000001f21d R15: 0000000020000200
 </TASK>

The buggy address belongs to the physical page:
page:ffffea00013f48c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x4fd23
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 ffffea0000fee748 ffffea0001462dc8 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 5067, tgid 5029 (syz-fuzzer), ts 1448404314932, free_ts 2078620414237
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536
 prep_new_page mm/page_alloc.c:1543 [inline]
 get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170
 __alloc_pages+0x255/0x670 mm/page_alloc.c:4426
 __folio_alloc+0x13/0x30 mm/page_alloc.c:4458
 vma_alloc_folio+0x48a/0x9a0 mm/mempolicy.c:2258
 do_anonymous_page mm/memory.c:4110 [inline]
 do_pte_missing mm/memory.c:3667 [inline]
 handle_pte_fault mm/memory.c:4978 [inline]
 __handle_mm_fault mm/memory.c:5119 [inline]
 handle_mm_fault+0x2376/0x62b0 mm/memory.c:5284
 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x455/0x860 arch/x86/mm/fault.c:1561
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1136 [inline]
 free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
 free_unref_page_list+0x596/0x830 mm/page_alloc.c:2451
 release_pages+0x2113/0x23f0 mm/swap.c:1042
 tlb_batch_pages_flush mm/mmu_gather.c:98 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:293 [inline]
 tlb_flush_mmu+0x34c/0x4e0 mm/mmu_gather.c:300
 tlb_finish_mmu+0xd4/0x1f0 mm/mmu_gather.c:392
 zap_page_range_single+0x500/0x5e0 mm/memory.c:1768
 madvise_dontneed_single_vma mm/madvise.c:825 [inline]
 madvise_dontneed_free mm/madvise.c:906 [inline]
 madvise_vma_behavior mm/madvise.c:1045 [inline]
 madvise_walk_vmas mm/madvise.c:1270 [inline]
 do_madvise+0x23eb/0x4700 mm/madvise.c:1450
 __do_sys_madvise mm/madvise.c:1463 [inline]
 __se_sys_madvise mm/madvise.c:1461 [inline]
 __x64_sys_madvise+0xa5/0xb0 mm/madvise.c:1461
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff88804fd22f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88804fd22f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88804fd23000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88804fd23080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88804fd23100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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