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BUG: KASAN: use-after-free in memcmp+0x172/0x1c0 lib/string.c:681
Read of size 8 at addr ffff8880918b6002 by task syz-executor.0/21126

CPU: 0 PID: 21126 Comm: syz-executor.0 Not tainted 6.5.0-rc2-syzkaller-00307-gd192f5382581 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 memcmp+0x172/0x1c0 lib/string.c:681
 memcmp include/linux/fortify-string.h:728 [inline]
 ntfs_init_from_boot fs/ntfs3/super.c:860 [inline]
 ntfs_fill_super+0x6e0/0x43b0 fs/ntfs3/super.c:1141
 get_tree_bdev+0x43e/0x7d0 fs/super.c:1318
 vfs_get_tree+0x88/0x350 fs/super.c:1519
 do_new_mount fs/namespace.c:3335 [inline]
 path_mount+0x1492/0x1ed0 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount fs/namespace.c:3861 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbc5b07e22a
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:00007fbc5bda7ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbc5bda7f80 RCX: 00007fbc5b07e22a
RDX: 00000000200001c0 RSI: 0000000020000000 RDI: 00007fbc5bda7f40
RBP: 00000000200001c0 R08: 00007fbc5bda7f80 R09: 000000000321085e
R10: 000000000321085e R11: 0000000000000202 R12: 0000000020000000
R13: 00007fbc5bda7f40 R14: 000000000001f1af R15: 00000000200000c0
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0002462d80 refcount:0 mapcount:-128 mapping:0000000000000000 index:0x1 pfn:0x918b6
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffff7f(buddy)
raw: 00fff00000000000 ffffea0002462e08 ffffea0002436e08 0000000000000000
raw: 0000000000000001 0000000000000001 00000000ffffff7f 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 21045, tgid 21044 (syz-executor.4), ts 1250829344724, free_ts 1251022636712
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1570
 prep_new_page mm/page_alloc.c:1577 [inline]
 get_page_from_freelist+0x10a9/0x31e0 mm/page_alloc.c:3221
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4477
 __folio_alloc+0x16/0x40 mm/page_alloc.c:4509
 vma_alloc_folio+0x156/0x890 mm/mempolicy.c:2240
 do_anonymous_page mm/memory.c:4104 [inline]
 do_pte_missing mm/memory.c:3662 [inline]
 handle_pte_fault mm/memory.c:4939 [inline]
 __handle_mm_fault+0x12a8/0x3b80 mm/memory.c:5079
 handle_mm_fault+0x2ab/0x9d0 mm/memory.c:5233
 do_user_addr_fault+0x2e7/0xfc0 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1486 [inline]
 exc_page_fault+0x5c/0xd0 arch/x86/mm/fault.c:1542
 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:1161 [inline]
 free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2348
 free_unref_page_list+0xe6/0xb30 mm/page_alloc.c:2489
 release_pages+0x32a/0x14e0 mm/swap.c:1042
 tlb_batch_pages_flush+0x9a/0x190 mm/mmu_gather.c:97
 tlb_flush_mmu_free mm/mmu_gather.c:292 [inline]
 tlb_flush_mmu mm/mmu_gather.c:299 [inline]
 tlb_finish_mmu+0x14b/0x7e0 mm/mmu_gather.c:391
 unmap_region+0x244/0x2e0 mm/mmap.c:2317
 do_vmi_align_munmap+0xe8e/0x1720 mm/mmap.c:2556
 do_vmi_munmap+0x20e/0x450 mm/mmap.c:2623
 __vm_munmap+0x144/0x390 mm/mmap.c:2905
 __do_sys_munmap mm/mmap.c:2922 [inline]
 __se_sys_munmap mm/mmap.c:2919 [inline]
 __x64_sys_munmap+0x62/0x80 mm/mmap.c:2919
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff8880918b5f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880918b5f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880918b6000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff8880918b6080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8880918b6100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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