=====================================================
BUG: KMSAN: uninit-value in hfs_brec_keylen+0x39c/0x640 fs/hfs/brec.c:46
 hfs_brec_keylen+0x39c/0x640 fs/hfs/brec.c:46
 __hfs_brec_find+0x11e/0x8b0 fs/hfs/bfind.c:69
 hfs_brec_find+0x4c4/0x9f0 fs/hfs/bfind.c:138
 hfs_cat_move+0x122d/0x1390 fs/hfs/catalog.c:372
 hfs_rename+0x313/0x550 fs/hfs/dir.c:299
 vfs_rename+0x1e87/0x2460 fs/namei.c:5121
 do_renameat2+0x175e/0x1d70 fs/namei.c:5270
 __do_sys_rename fs/namei.c:5317 [inline]
 __se_sys_rename fs/namei.c:5315 [inline]
 __ia32_sys_rename+0xd7/0x140 fs/namei.c:5315
 ia32_sys_call+0x3d36/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:39
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Local variable data created at:
 hfs_bnode_read_u16+0x3b/0x90 fs/hfs/bnode.c:44
 hfs_brec_keylen+0x209/0x640 fs/hfs/brec.c:45

CPU: 1 UID: 0 PID: 6265 Comm: syz.1.89 Not tainted 6.15.0-rc3-syzkaller-00094-g02ddfb981de8 #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
=====================================================