loop4: detected capacity change from 0 to 64
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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]
 __x64_sys_rename+0xd7/0x140 fs/namei.c:5315
 x64_sys_call+0x3553/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:83
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x1b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

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: 0 UID: 0 PID: 9374 Comm: syz.4.1163 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
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