loop4: detected capacity change from 0 to 64
=====================================================
BUG: KMSAN: uninit-value in __hfs_ext_read_extent fs/hfs/extent.c:160 [inline]
BUG: KMSAN: uninit-value in __hfs_ext_cache_extent+0x69f/0x7e0 fs/hfs/extent.c:179
 __hfs_ext_read_extent fs/hfs/extent.c:160 [inline]
 __hfs_ext_cache_extent+0x69f/0x7e0 fs/hfs/extent.c:179
 hfs_file_truncate+0x76a/0xd30 fs/hfs/extent.c:526
 hfs_delete_inode+0x5b3/0x640 fs/hfs/inode.c:259
 hfs_remove+0x242/0x2f0 fs/hfs/dir.c:267
 vfs_unlink+0x676/0xa90 fs/namei.c:4544
 do_unlinkat+0x7a3/0xd60 fs/namei.c:4608
 __do_sys_unlinkat fs/namei.c:4649 [inline]
 __se_sys_unlinkat fs/namei.c:4642 [inline]
 __x64_sys_unlinkat+0x17a/0x220 fs/namei.c:4642
 x64_sys_call+0x29b1/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:264
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x1b0 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:4167 [inline]
 slab_alloc_node mm/slub.c:4210 [inline]
 __do_kmalloc_node mm/slub.c:4340 [inline]
 __kmalloc_noprof+0x946/0x1260 mm/slub.c:4353
 kmalloc_noprof include/linux/slab.h:909 [inline]
 hfs_find_init+0x92/0x260 fs/hfs/bfind.c:21
 hfs_file_truncate+0x3c6/0xd30 fs/hfs/extent.c:512
 hfs_delete_inode+0x5b3/0x640 fs/hfs/inode.c:259
 hfs_remove+0x242/0x2f0 fs/hfs/dir.c:267
 vfs_unlink+0x676/0xa90 fs/namei.c:4544
 do_unlinkat+0x7a3/0xd60 fs/namei.c:4608
 __do_sys_unlinkat fs/namei.c:4649 [inline]
 __se_sys_unlinkat fs/namei.c:4642 [inline]
 __x64_sys_unlinkat+0x17a/0x220 fs/namei.c:4642
 x64_sys_call+0x29b1/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:264
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x1b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 8717 Comm: syz.4.467 Not tainted 6.15.0-rc2-syzkaller-00400-g3088d26962e8 #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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