loop4: detected capacity change from 0 to 4096
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: use-after-free in NInoAttr fs/ntfs/inode.h:200 [inline]
BUG: KASAN: use-after-free in ntfs_test_inode+0x7f/0x2e0 fs/ntfs/inode.c:55
Read of size 8 at addr ffff88804f7c7f80 by task syz-executor.4/7437

CPU: 1 PID: 7437 Comm: syz-executor.4 Not tainted 6.6.0-rc1-syzkaller-00070-g23f108dc9ed2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
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
 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:187
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 NInoAttr fs/ntfs/inode.h:200 [inline]
 ntfs_test_inode+0x7f/0x2e0 fs/ntfs/inode.c:55
 find_inode+0x16f/0x430 fs/inode.c:901
 ilookup5_nowait fs/inode.c:1456 [inline]
 ilookup5+0xa1/0x200 fs/inode.c:1485
 iget5_locked+0x37/0x270 fs/inode.c:1266
 ntfs_iget+0xc4/0x190 fs/ntfs/inode.c:168
 load_system_files+0x250c/0x4840 fs/ntfs/super.c:1855
 ntfs_fill_super+0x19b3/0x2bd0 fs/ntfs/super.c:2900
 mount_bdev+0x237/0x300 fs/super.c:1629
 legacy_get_tree+0xef/0x190 fs/fs_context.c:638
 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: 0033:0x7fc4aee7e1ea
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:00007fc4afc26ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc4afc26f80 RCX: 00007fc4aee7e1ea
RDX: 0000000020000100 RSI: 000000002001ecc0 RDI: 00007fc4afc26f40
RBP: 0000000020000100 R08: 00007fc4afc26f80 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000002001ecc0
R13: 00007fc4afc26f40 R14: 000000000001ec6a R15: 0000000020000140
 </TASK>

The buggy address belongs to the physical page:
page:ffffea00013df1c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x200000000 pfn:0x4f7c7
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000200000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 1, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 7140, tgid 7137 (syz-executor.4), ts 167319142570, free_ts 179079666611
 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
 alloc_slab_page+0x6a/0x160 mm/slub.c:1870
 allocate_slab mm/slub.c:2017 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2070
 ___slab_alloc+0xade/0x1100 mm/slub.c:3223
 __slab_alloc mm/slub.c:3322 [inline]
 __slab_alloc_node mm/slub.c:3375 [inline]
 slab_alloc_node mm/slub.c:3468 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc+0x1bf/0x300 mm/slub.c:3502
 nilfs_segbuf_new+0x4e/0x260 fs/nilfs2/segbuf.c:38
 nilfs_segctor_begin_construction fs/nilfs2/segment.c:1320 [inline]
 nilfs_segctor_do_construct+0xba1/0x6e30 fs/nilfs2/segment.c:2075
 nilfs_construct_dsync_segment+0x5c4/0x6c0 fs/nilfs2/segment.c:2347
 do_writepages+0x3a6/0x670 mm/page-writeback.c:2553
 filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:390
 __filemap_fdatawrite_range mm/filemap.c:423 [inline]
 filemap_write_and_wait_range+0x1d4/0x2c0 mm/filemap.c:678
 kiocb_write_and_wait mm/filemap.c:2738 [inline]
 generic_file_read_iter+0x1a4/0x550 mm/filemap.c:2803
 call_read_iter include/linux/fs.h:1979 [inline]
 copy_splice_read+0x4c9/0x9c0 fs/splice.c:364
 splice_direct_to_actor+0x2c4/0x9e0 fs/splice.c:1069
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+0x37/0x3f0 mm/page_alloc.c:2405
 discard_slab mm/slub.c:2116 [inline]
 __unfreeze_partials+0x1dc/0x220 mm/slub.c:2655
 put_cpu_partial+0x116/0x180 mm/slub.c:2731
 __slab_free+0x2b6/0x390 mm/slub.c:3679
 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook+0x6c/0x3b0 mm/slab.h:762
 slab_alloc_node mm/slub.c:3478 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc+0x123/0x300 mm/slub.c:3502
 getname_flags+0xbc/0x4e0 fs/namei.c:140
 do_sys_openat2+0xd2/0x1d0 fs/open.c:1416
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_openat fs/open.c:1453 [inline]
 __se_sys_openat fs/open.c:1448 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1448
 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:
 ffff88804f7c7e80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88804f7c7f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88804f7c7f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88804f7c8000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88804f7c8080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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