================================================================== BUG: KCSAN: data-race in inotify_handle_event / inotify_remove_from_idr read to 0xffff88812b749c28 of 4 bytes by task 8128 on cpu 0: inotify_handle_event+0x236/0x41a fs/notify/inotify/inotify_fsnotify.c:123 send_to_group fs/notify/fsnotify.c:230 [inline] fsnotify+0x556/0x7d0 fs/notify/fsnotify.c:368 fsnotify_path include/linux/fsnotify.h:54 [inline] fsnotify_close include/linux/fsnotify.h:290 [inline] __fput+0x3aa/0x520 fs/file_table.c:266 ____fput+0x1f/0x30 fs/file_table.c:313 task_work_run+0xf6/0x130 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x2b4/0x2c0 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x384/0x3a0 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff88812b749c28 of 4 bytes by task 8036 on cpu 1: inotify_remove_from_idr+0xff/0x320 fs/notify/inotify/inotify_user.c:473 inotify_ignored_and_remove_idr+0x9c/0xe0 fs/notify/inotify/inotify_user.c:498 inotify_freeing_mark+0x27/0x40 fs/notify/inotify/inotify_fsnotify.c:143 fsnotify_free_mark+0xad/0xe0 fs/notify/mark.c:423 fsnotify_destroy_mark+0x40/0x50 fs/notify/mark.c:432 __do_sys_inotify_rm_watch fs/notify/inotify/inotify_user.c:787 [inline] __se_sys_inotify_rm_watch fs/notify/inotify/inotify_user.c:762 [inline] __x64_sys_inotify_rm_watch+0xcc/0x130 fs/notify/inotify/inotify_user.c:762 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 8036 Comm: udevd Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================