=====================================================
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_slow+0x2ea/0x770 fs/namei.c:1905
 lookup_slow+0x6a/0xd0 fs/namei.c:1933
 walk_component fs/namei.c:2279 [inline]
 lookup_last fs/namei.c:2780 [inline]
 path_lookupat+0x7d1/0xdf0 fs/namei.c:2804
 filename_lookup+0x2bc/0x800 fs/namei.c:2833
 filename_setxattr+0x7d/0xcb0 fs/xattr.c:659
 path_setxattrat+0x702/0x800 fs/xattr.c:708
 __do_sys_lsetxattr fs/xattr.c:749 [inline]
 __se_sys_lsetxattr fs/xattr.c:745 [inline]
 __ia32_sys_lsetxattr+0x100/0x1b0 fs/xattr.c:745
 ia32_sys_call+0x2b6c/0x4360 arch/x86/include/generated/asm/syscalls_32.h:228
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x17f/0x3f0 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4508 [inline]
 slab_alloc_node mm/slub.c:4830 [inline]
 kmem_cache_alloc_lru_noprof+0x382/0x1280 mm/slub.c:4849
 __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:2780 [inline]
 path_lookupat+0x7d1/0xdf0 fs/namei.c:2804
 filename_lookup+0x2bc/0x800 fs/namei.c:2833
 user_path_at+0x94/0x330 fs/namei.c:3612
 ksys_umount fs/namespace.c:2052 [inline]
 __do_sys_umount fs/namespace.c:2060 [inline]
 __se_sys_umount fs/namespace.c:2058 [inline]
 __ia32_sys_umount+0x142/0x250 fs/namespace.c:2058
 ia32_sys_call+0x4ad/0x4360 arch/x86/include/generated/asm/syscalls_32.h:53
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x17f/0x3f0 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

CPU: 0 UID: 0 PID: 11452 Comm: syz.9.1678 Tainted: G        W    L      syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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