loop1: detected capacity change from 0 to 1024
=====================================================
BUG: KMSAN: uninit-value in hfsplus_compose_lookup fs/hfsplus/unicode.c:108 [inline]
BUG: KMSAN: uninit-value in hfsplus_uni2asc+0x99f/0x25e0 fs/hfsplus/unicode.c:181
 hfsplus_compose_lookup fs/hfsplus/unicode.c:108 [inline]
 hfsplus_uni2asc+0x99f/0x25e0 fs/hfsplus/unicode.c:181
 hfsplus_readdir+0xd60/0x1a70 fs/hfsplus/dir.c:207
 iterate_dir+0x716/0x920 fs/readdir.c:108
 __do_sys_getdents64 fs/readdir.c:403 [inline]
 __se_sys_getdents64+0x17e/0x550 fs/readdir.c:389
 __ia32_sys_getdents64+0x96/0xe0 fs/readdir.c:389
 ia32_sys_call+0x4042/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:221
 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

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4167 [inline]
 slab_alloc_node mm/slub.c:4210 [inline]
 __do_kmalloc_node mm/slub.c:4340 [inline]
 __kmalloc_noprof+0x95f/0x1310 mm/slub.c:4353
 kmalloc_noprof include/linux/slab.h:909 [inline]
 hfsplus_find_init+0x90/0x1d0 fs/hfsplus/bfind.c:21
 hfsplus_create_cat+0xe4/0x1910 fs/hfsplus/catalog.c:264
 hfsplus_mknod+0x208/0x560 fs/hfsplus/dir.c:494
 hfsplus_create+0x54/0x70 fs/hfsplus/dir.c:523
 lookup_open fs/namei.c:3701 [inline]
 open_last_lookups fs/namei.c:3800 [inline]
 path_openat+0x2d44/0x6760 fs/namei.c:4036
 do_filp_open+0x280/0x660 fs/namei.c:4066
 do_sys_openat2+0x1bb/0x2f0 fs/open.c:1429
 do_sys_open fs/open.c:1444 [inline]
 __do_sys_creat fs/open.c:1522 [inline]
 __se_sys_creat fs/open.c:1516 [inline]
 __ia32_sys_creat+0xe1/0x150 fs/open.c:1516
 ia32_sys_call+0x40e2/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:9
 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

CPU: 1 UID: 0 PID: 6129 Comm: syz.1.40 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
=====================================================