================================================================== BUG: KCSAN: data-race in __dentry_kill / d_set_d_op read-write to 0xffff888158183d80 of 4 bytes by task 9851 on cpu 1: d_set_d_op+0x150/0x1e0 fs/dcache.c:1935 simple_lookup+0x7c/0xa0 fs/libfs.c:75 __lookup_slow+0x17a/0x230 fs/namei.c:1694 lookup_slow+0x3c/0x60 fs/namei.c:1711 walk_component+0x1ec/0x230 fs/namei.c:2002 lookup_last fs/namei.c:2459 [inline] path_lookupat+0x10a/0x2a0 fs/namei.c:2483 filename_lookup+0x126/0x300 fs/namei.c:2512 vfs_statx+0xa2/0x430 fs/stat.c:240 vfs_fstatat+0xcd/0x100 fs/stat.c:295 __do_sys_newfstatat fs/stat.c:459 [inline] __se_sys_newfstatat+0x58/0x260 fs/stat.c:453 __x64_sys_newfstatat+0x55/0x60 fs/stat.c:453 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888158183d80 of 4 bytes by task 9843 on cpu 0: dentry_unlist fs/dcache.c:572 [inline] __dentry_kill+0x237/0x4a0 fs/dcache.c:603 dentry_kill+0x8d/0x1e0 dput+0x118/0x1f0 fs/dcache.c:913 handle_mounts fs/namei.c:1555 [inline] step_into+0x21a/0x800 fs/namei.c:1840 walk_component+0x164/0x230 fs/namei.c:2008 lookup_last fs/namei.c:2459 [inline] path_lookupat+0x10a/0x2a0 fs/namei.c:2483 filename_lookup+0x126/0x300 fs/namei.c:2512 user_path_at_empty+0x42/0x110 fs/namei.c:2911 user_path_at include/linux/namei.h:57 [inline] inotify_find_inode fs/notify/inotify/inotify_user.c:378 [inline] __do_sys_inotify_add_watch fs/notify/inotify/inotify_user.c:777 [inline] __se_sys_inotify_add_watch+0x119/0x820 fs/notify/inotify/inotify_user.c:730 __x64_sys_inotify_add_watch+0x43/0x50 fs/notify/inotify/inotify_user.c:730 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x10000000 -> 0x00000008 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 9843 Comm: udevd Not tainted 6.6.0-rc7-syzkaller-00151-g56567a20b22b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 ================================================================== udevd[9843]: inotify_add_watch(7, /dev/loop2p110, 10) failed: No such file or directory