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BUG: KASAN: slab-out-of-bounds in ntfs_set_ea+0x1394/0x1660 fs/ntfs3/xattr.c:411
Write of size 4 at addr ffff88807b23ed9c by task syz-executor291/4256

CPU: 1 PID: 4256 Comm: syz-executor291 Not tainted 6.1.117-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x15f/0x4f0 mm/kasan/report.c:395
 kasan_report+0x136/0x160 mm/kasan/report.c:495
 ntfs_set_ea+0x1394/0x1660 fs/ntfs3/xattr.c:411
 ntfs_save_wsl_perm+0x139/0x490 fs/ntfs3/xattr.c:976
 ntfs3_setattr+0x961/0xb70 fs/ntfs3/file.c:816
 notify_change+0xce3/0xfc0 fs/attr.c:499
 chmod_common+0x2a7/0x4b0 fs/open.c:606
 do_fchmodat fs/open.c:645 [inline]
 __do_sys_fchmodat fs/open.c:658 [inline]
 __se_sys_fchmodat fs/open.c:655 [inline]
 __x64_sys_fchmodat+0x117/0x1a0 fs/open.c:655
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f80991eff19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 1d 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8099180218 EFLAGS: 00000246 ORIG_RAX: 000000000000010c
RAX: ffffffffffffffda RBX: 00007f80992916f8 RCX: 00007f80991eff19
RDX: 0000000000000141 RSI: 0000000020000200 RDI: 00000000ffffff9c
RBP: 00007f80992916f0 R08: 00007ffeb10a1147 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f809925cf2c
R13: 0030656c69662f2e R14: 7974697275636573 R15: 6f6f6c2f7665642f
 </TASK>

The buggy address belongs to the object at ffff88807b23ed80
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 28 bytes inside of
 32-byte region [ffff88807b23ed80, ffff88807b23eda0)

The buggy address belongs to the physical page:
page:ffffea0001ec8f80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7b23e
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 0000000000000000 dead000000000122 ffff888017c41500
raw: 0000000000000000 0000000080400040 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 0x12c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY), pid 4256, tgid 4245 (syz-executor291), ts 76034680749, free_ts 67707401072
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517
 prep_new_page mm/page_alloc.c:2524 [inline]
 get_page_from_freelist+0x3731/0x38d0 mm/page_alloc.c:4313
 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5589
 alloc_slab_page+0x6a/0x150 mm/slub.c:1794
 allocate_slab mm/slub.c:1939 [inline]
 new_slab+0x84/0x2d0 mm/slub.c:1992
 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180
 __slab_alloc mm/slub.c:3279 [inline]
 slab_alloc_node mm/slub.c:3364 [inline]
 __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:935 [inline]
 __kmalloc+0xa1/0x230 mm/slab_common.c:949
 kmalloc include/linux/slab.h:562 [inline]
 kzalloc include/linux/slab.h:693 [inline]
 ntfs_set_ea+0x6d7/0x1660 fs/ntfs3/xattr.c:401
 ntfs_save_wsl_perm+0x139/0x490 fs/ntfs3/xattr.c:976
 ntfs3_setattr+0x961/0xb70 fs/ntfs3/file.c:816
 notify_change+0xce3/0xfc0 fs/attr.c:499
 chmod_common+0x2a7/0x4b0 fs/open.c:606
 do_fchmodat fs/open.c:645 [inline]
 __do_sys_fchmodat fs/open.c:658 [inline]
 __se_sys_fchmodat fs/open.c:655 [inline]
 __x64_sys_fchmodat+0x117/0x1a0 fs/open.c:655
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1444 [inline]
 free_pcp_prepare mm/page_alloc.c:1494 [inline]
 free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3369
 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3464
 pipe_buf_release include/linux/pipe_fs_i.h:199 [inline]
 pipe_read+0x6e1/0x12a0 fs/pipe.c:324
 call_read_iter include/linux/fs.h:2259 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x88d/0xbf0 fs/read_write.c:470
 ksys_read+0x19c/0x2c0 fs/read_write.c:613
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Memory state around the buggy address:
 ffff88807b23ec80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88807b23ed00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88807b23ed80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                            ^
 ffff88807b23ee00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88807b23ee80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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