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BUG: KCSAN: data-race in fsnotify_detach_mark / inotify_handle_inode_event

write to 0xffff88810470c904 of 4 bytes by task 3292 on cpu 0:
 fsnotify_detach_mark+0xba/0x160 fs/notify/mark.c:547
 fsnotify_destroy_mark+0x6e/0x140 fs/notify/mark.c:589
 __do_sys_inotify_rm_watch fs/notify/inotify/inotify_user.c:805 [inline]
 __se_sys_inotify_rm_watch+0xea/0x170 fs/notify/inotify/inotify_user.c:786
 __x64_sys_inotify_rm_watch+0x31/0x40 fs/notify/inotify/inotify_user.c:786
 x64_sys_call+0x25e0/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:256
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff88810470c904 of 4 bytes by task 3298 on cpu 1:
 inotify_handle_inode_event+0x2d3/0x320 fs/notify/inotify/inotify_fsnotify.c:132
 fsnotify_handle_inode_event+0x1bd/0x220 fs/notify/fsnotify.c:316
 fsnotify_handle_event fs/notify/fsnotify.c:371 [inline]
 send_to_group fs/notify/fsnotify.c:419 [inline]
 fsnotify+0x1187/0x1260 fs/notify/fsnotify.c:628
 __fsnotify_parent+0x2f5/0x340 fs/notify/fsnotify.c:282
 fsnotify_parent include/linux/fsnotify.h:96 [inline]
 fsnotify_path include/linux/fsnotify.h:113 [inline]
 fsnotify_file include/linux/fsnotify.h:127 [inline]
 fsnotify_close include/linux/fsnotify.h:456 [inline]
 __fput+0x1e7/0x640 fs/file_table.c:436
 __fput_sync+0x96/0xc0 fs/file_table.c:536
 __do_sys_close fs/open.c:1579 [inline]
 __se_sys_close+0x109/0x1b0 fs/open.c:1564
 __x64_sys_close+0x1f/0x30 fs/open.c:1564
 x64_sys_call+0x266c/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:4
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000003 -> 0x00000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3298 Comm: syz-executor Not tainted 6.13.0-syzkaller-07078-gb46c89c08f41 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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