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BUG: KMSAN: uninit-value in fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394
 fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394
 d_revalidate fs/namei.c:1030 [inline]
 lookup_open fs/namei.c:4411 [inline]
 open_last_lookups fs/namei.c:4589 [inline]
 path_openat+0x1614/0x64c0 fs/namei.c:4833
 do_file_open+0x2aa/0x680 fs/namei.c:4865
 do_sys_openat2+0x163/0x380 fs/open.c:1366
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x240/0x300 fs/open.c:1383
 x64_sys_call+0x2445/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4545 [inline]
 slab_alloc_node mm/slub.c:4866 [inline]
 kmem_cache_alloc_lru_noprof+0x382/0x1280 mm/slub.c:4885
 __d_alloc+0x55/0xa00 fs/dcache.c:1740
 d_alloc_parallel+0x99/0x2740 fs/dcache.c:2604
 __lookup_slow+0x138/0x770 fs/namei.c:1901
 lookup_slow+0x6a/0xd0 fs/namei.c:1933
 walk_component fs/namei.c:2279 [inline]
 lookup_last fs/namei.c:2786 [inline]
 path_lookupat+0x7d1/0xdf0 fs/namei.c:2810
 filename_lookup+0x2bc/0x800 fs/namei.c:2839
 kern_path+0x8c/0x320 fs/namei.c:3046
 ovl_mount_dir_noesc fs/overlayfs/params.c:258 [inline]
 ovl_mount_dir fs/overlayfs/params.c:289 [inline]
 ovl_kern_path fs/overlayfs/params.c:415 [inline]
 ovl_parse_param_lowerdir+0xb3b/0x1460 fs/overlayfs/params.c:567
 ovl_parse_param+0x99f/0x19d0 fs/overlayfs/params.c:646
 vfs_parse_fs_param+0x428/0x890 fs/fs_context.c:132
 vfs_parse_fs_qstr fs/fs_context.c:173 [inline]
 vfs_parse_fs_string include/linux/fs_context.h:142 [inline]
 vfs_parse_monolithic_sep+0x4cf/0x6f0 fs/fs_context.c:213
 ovl_parse_monolithic+0x3d/0x50 fs/overlayfs/params.c:207
 parse_monolithic_mount_data+0x6b/0x90 fs/fs_context.c:520
 do_new_mount+0x676/0x1dd0 fs/namespace.c:3835
 path_mount+0x7a2/0x20b0 fs/namespace.c:4159
 do_mount fs/namespace.c:4172 [inline]
 __do_sys_mount fs/namespace.c:4361 [inline]
 __se_sys_mount+0x704/0x7f0 fs/namespace.c:4338
 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4338
 x64_sys_call+0x39f0/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 8657 Comm: syz.4.445 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
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