=====================================================
BUG: KMSAN: uninit-value in __hfs_ext_read_extent fs/hfs/extent.c:160 [inline]
BUG: KMSAN: uninit-value in __hfs_ext_cache_extent+0x677/0x7f0 fs/hfs/extent.c:179
 __hfs_ext_read_extent fs/hfs/extent.c:160 [inline]
 __hfs_ext_cache_extent+0x677/0x7f0 fs/hfs/extent.c:179
 hfs_file_truncate+0x81f/0xe60 fs/hfs/extent.c:526
 hfs_delete_inode+0x5d9/0x670 fs/hfs/inode.c:259
 hfs_remove+0x215/0x310 fs/hfs/dir.c:267
 vfs_unlink+0x616/0xab0 fs/namei.c:4579
 do_unlinkat+0x6e6/0xe50 fs/namei.c:4643
 __do_sys_unlinkat fs/namei.c:4684 [inline]
 __se_sys_unlinkat fs/namei.c:4677 [inline]
 __ia32_sys_unlinkat+0x1a5/0x210 fs/namei.c:4677
 ia32_sys_call+0x3d22/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:302
 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:4153 [inline]
 slab_alloc_node mm/slub.c:4196 [inline]
 __do_kmalloc_node mm/slub.c:4326 [inline]
 __kmalloc_noprof+0x95f/0x1310 mm/slub.c:4339
 kmalloc_noprof include/linux/slab.h:909 [inline]
 hfs_find_init+0x93/0x260 fs/hfs/bfind.c:21
 hfs_file_truncate+0x55a/0xe60 fs/hfs/extent.c:512
 hfs_delete_inode+0x5d9/0x670 fs/hfs/inode.c:259
 hfs_remove+0x215/0x310 fs/hfs/dir.c:267
 vfs_unlink+0x616/0xab0 fs/namei.c:4579
 do_unlinkat+0x6e6/0xe50 fs/namei.c:4643
 __do_sys_unlinkat fs/namei.c:4684 [inline]
 __se_sys_unlinkat fs/namei.c:4677 [inline]
 __ia32_sys_unlinkat+0x1a5/0x210 fs/namei.c:4677
 ia32_sys_call+0x3d22/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:302
 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: 0 UID: 0 PID: 9140 Comm: syz.1.852 Not tainted 6.15.0-rc7-syzkaller-00144-gb1427432d3b6 #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
=====================================================