loop0: 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_readdir+0x1dc/0x1a70 fs/hfsplus/dir.c:144 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 CPU: 1 UID: 0 PID: 6663 Comm: syz.0.211 Not tainted 6.15.0-rc3-syzkaller-00094-g02ddfb981de8 #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 =====================================================