syzbot

netdevsim netdevsim4 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim4 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim4 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
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BUG: KCSAN: data-race in fsnotify_destroy_mark / inotify_handle_inode_event

write to 0xffff888102fbdae4 of 4 bytes by task 3247 on cpu 1:
 fsnotify_free_mark fs/notify/mark.c:537 [inline]
 fsnotify_destroy_mark+0x146/0x1a0 fs/notify/mark.c:555
 __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+0x1b06/0x2d70 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 0xffff888102fbdae4 of 4 bytes by task 3442 on cpu 0:
 inotify_handle_inode_event+0x2c2/0x310 fs/notify/inotify/inotify_fsnotify.c:132
 fsnotify_handle_inode_event+0x18e/0x1f0 fs/notify/fsnotify.c:284
 fsnotify_handle_event fs/notify/fsnotify.c:336 [inline]
 send_to_group fs/notify/fsnotify.c:384 [inline]
 fsnotify+0x10ba/0x11a0 fs/notify/fsnotify.c:593
 __fsnotify_parent+0x285/0x370 fs/notify/fsnotify.c:250
 fsnotify_parent include/linux/fsnotify.h:96 [inline]
 fsnotify_file include/linux/fsnotify.h:131 [inline]
 fsnotify_close include/linux/fsnotify.h:412 [inline]
 __fput+0x5ca/0x6f0 fs/file_table.c:408
 __fput_sync+0x44/0x60 fs/file_table.c:507
 __do_sys_close fs/open.c:1563 [inline]
 __se_sys_close+0x101/0x1b0 fs/open.c:1548
 __x64_sys_close+0x1f/0x30 fs/open.c:1548
 x64_sys_call+0x25f1/0x2d70 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: 0x00000001 -> 0x00000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 3442 Comm: syz-executor Not tainted 6.10.0-rc7-syzkaller-00076-g9d9a2f29aefd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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