loop5: detected capacity change from 0 to 1024
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BUG: KMSAN: uninit-value in hfsplus_cat_case_cmp_key+0xd9/0x190 fs/hfsplus/catalog.c:23
 hfsplus_cat_case_cmp_key+0xd9/0x190 fs/hfsplus/catalog.c:23
 hfs_find_rec_by_key+0xab/0x240 fs/hfsplus/bfind.c:89
 __hfsplus_brec_find+0x274/0x840 fs/hfsplus/bfind.c:124
 hfsplus_brec_find+0x4df/0x9f0 fs/hfsplus/bfind.c:184
 hfsplus_brec_read+0x46/0x1f0 fs/hfsplus/bfind.c:211
 hfsplus_lookup+0x293/0xf70 fs/hfsplus/dir.c:52
 lookup_one_qstr_excl+0x23f/0x7a0 fs/namei.c:1697
 filename_create+0x2cb/0x590 fs/namei.c:4140
 do_mkdirat+0x66/0xf30 fs/namei.c:4391
 __do_sys_mkdirat fs/namei.c:4416 [inline]
 __se_sys_mkdirat fs/namei.c:4414 [inline]
 __x64_sys_mkdirat+0xc1/0x140 fs/namei.c:4414
 x64_sys_call+0x338/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 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:4197 [inline]
 slab_alloc_node mm/slub.c:4240 [inline]
 __do_kmalloc_node mm/slub.c:4375 [inline]
 __kmalloc_noprof+0x95f/0x1310 mm/slub.c:4388
 kmalloc_noprof include/linux/slab.h:909 [inline]
 hfsplus_find_init+0x90/0x1d0 fs/hfsplus/bfind.c:21
 hfsplus_lookup+0x104/0xf70 fs/hfsplus/dir.c:44
 lookup_one_qstr_excl+0x23f/0x7a0 fs/namei.c:1697
 filename_create+0x2cb/0x590 fs/namei.c:4140
 do_mkdirat+0x66/0xf30 fs/namei.c:4391
 __do_sys_mkdirat fs/namei.c:4416 [inline]
 __se_sys_mkdirat fs/namei.c:4414 [inline]
 __x64_sys_mkdirat+0xc1/0x140 fs/namei.c:4414
 x64_sys_call+0x338/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 13508 Comm: syz.5.2183 Not tainted syzkaller #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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