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BUG: KCSAN: data-race in fsnotify_detach_mark / inotify_handle_inode_event

write to 0xffff8881130f89f4 of 4 bytes by task 11195 on cpu 0:
 fsnotify_detach_mark+0xe1/0x190 fs/notify/mark.c:455
 fsnotify_destroy_mark+0x9a/0x1a0 fs/notify/mark.c:497
 __do_sys_inotify_rm_watch fs/notify/inotify/inotify_user.c:816 [inline]
 __se_sys_inotify_rm_watch+0xfd/0x180 fs/notify/inotify/inotify_user.c:793
 __x64_sys_inotify_rm_watch+0x31/0x40 fs/notify/inotify/inotify_user.c:793
 x64_sys_call+0x2735/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:256
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff8881130f89f4 of 4 bytes by task 10521 on cpu 1:
 inotify_handle_inode_event+0x2c7/0x310 fs/notify/inotify/inotify_fsnotify.c:132
 fsnotify_handle_inode_event+0x18e/0x1f0 fs/notify/fsnotify.c:270
 fsnotify_handle_event fs/notify/fsnotify.c:322 [inline]
 send_to_group fs/notify/fsnotify.c:370 [inline]
 fsnotify+0x1023/0x1160 fs/notify/fsnotify.c:576
 __fsnotify_parent+0x285/0x370 fs/notify/fsnotify.c:236
 fsnotify_parent include/linux/fsnotify.h:83 [inline]
 fsnotify_file include/linux/fsnotify.h:106 [inline]
 fsnotify_close include/linux/fsnotify.h:387 [inline]
 __fput+0x1ff/0x660 fs/file_table.c:408
 __fput_sync+0x44/0x60 fs/file_table.c:507
 __do_sys_close fs/open.c:1556 [inline]
 __se_sys_close+0x101/0x1b0 fs/open.c:1541
 __x64_sys_close+0x1f/0x30 fs/open.c:1541
 x64_sys_call+0x25b9/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:4
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 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 PID: 10521 Comm: syz-executor.1 Not tainted 6.9.0-rc3-syzkaller-00355-g7efd0a74039f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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EXT4-fs (loop1): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09.
FAT-fs (loop1): error, fat_get_cluster: invalid cluster chain (i_pos 0)
FAT-fs (loop1): Filesystem has been set read-only
FAT-fs (loop1): error, fat_get_cluster: invalid cluster chain (i_pos 0)