syzbot

loop0: detected capacity change from 0 to 4096
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BUG: KASAN: use-after-free in ntfs_attr_find+0x7d6/0xd50 fs/ntfs/attrib.c:609
Read of size 2 at addr ffff888076e8a442 by task syz-executor604/5044

CPU: 0 PID: 5044 Comm: syz-executor604 Not tainted 6.7.0-syzkaller-12824-g9d64bf433c53 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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:377 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:488
 kasan_report+0x142/0x170 mm/kasan/report.c:601
 ntfs_attr_find+0x7d6/0xd50 fs/ntfs/attrib.c:609
 ntfs_attr_lookup+0x4e4/0x2390
 ntfs_read_locked_inode+0xa32/0x4940 fs/ntfs/inode.c:666
 ntfs_iget+0x113/0x190 fs/ntfs/inode.c:177
 load_and_init_mft_mirror fs/ntfs/super.c:1035 [inline]
 load_system_files+0x100/0x4840 fs/ntfs/super.c:1780
 ntfs_fill_super+0x19b3/0x2bd0 fs/ntfs/super.c:2900
 mount_bdev+0x206/0x2d0 fs/super.c:1663
 legacy_get_tree+0xef/0x190 fs/fs_context.c:662
 vfs_get_tree+0x8c/0x2a0 fs/super.c:1784
 do_new_mount+0x2be/0xb40 fs/namespace.c:3352
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fa1caa446ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 3e 06 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff8ac67208 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fff8ac67210 RCX: 00007fa1caa446ca
RDX: 000000002001f6c0 RSI: 0000000020000080 RDI: 00007fff8ac67210
RBP: 0000000000000004 R08: 00007fff8ac67250 R09: 000000000001f66a
R10: 000000000000c70b R11: 0000000000000286 R12: 00007fff8ac67250
R13: 0000000000000003 R14: 0000000000200000 R15: 00007fa1caa8e04b
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0001dba280 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x76e8a
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 ffffea0001dba2c8 ffff8880b9842830 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 0x8(__GFP_MOVABLE), pid 1, tgid 1 (swapper/0), ts 15230632161, free_ts 17116424573
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1533
 split_map_pages+0x24a/0x510 mm/compaction.c:97
 isolate_freepages_range+0x476/0x4d0 mm/compaction.c:774
 alloc_contig_range+0x62e/0x9a0 mm/page_alloc.c:6410
 __alloc_contig_pages mm/page_alloc.c:6433 [inline]
 alloc_contig_pages+0x3f4/0x4f0 mm/page_alloc.c:6513
 debug_vm_pgtable_alloc_huge_page+0xb9/0x110 mm/debug_vm_pgtable.c:1095
 init_args+0x837/0xb10 mm/debug_vm_pgtable.c:1277
 debug_vm_pgtable+0xe0/0x540 mm/debug_vm_pgtable.c:1315
 do_one_initcall+0x234/0x810 init/main.c:1236
 do_initcall_level+0x157/0x210 init/main.c:1298
 do_initcalls+0x3f/0x80 init/main.c:1314
 kernel_init_freeable+0x429/0x5c0 init/main.c:1551
 kernel_init+0x1d/0x2a0 init/main.c:1441
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
page last free pid 1 tgid 1 stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1140 [inline]
 free_unref_page_prepare+0x959/0xa80 mm/page_alloc.c:2346
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486
 free_contig_range+0x9e/0x160 mm/page_alloc.c:6535
 destroy_args+0x8a/0x890 mm/debug_vm_pgtable.c:1028
 debug_vm_pgtable+0x4ba/0x540 mm/debug_vm_pgtable.c:1408
 do_one_initcall+0x234/0x810 init/main.c:1236
 do_initcall_level+0x157/0x210 init/main.c:1298
 do_initcalls+0x3f/0x80 init/main.c:1314
 kernel_init_freeable+0x429/0x5c0 init/main.c:1551
 kernel_init+0x1d/0x2a0 init/main.c:1441
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

Memory state around the buggy address:
 ffff888076e8a300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888076e8a380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888076e8a400: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                           ^
 ffff888076e8a480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888076e8a500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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