syzbot

loop6: detected capacity change from 0 to 64
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BUG: KMSAN: uninit-value in __hfs_ext_read_extent fs/hfs/extent.c:160 [inline]
BUG: KMSAN: uninit-value in hfs_free_fork+0x929/0xa70 fs/hfs/extent.c:320
 __hfs_ext_read_extent fs/hfs/extent.c:160 [inline]
 hfs_free_fork+0x929/0xa70 fs/hfs/extent.c:320
 hfs_cat_delete+0x47c/0xb90 fs/hfs/catalog.c:247
 hfs_remove+0x167/0x310 fs/hfs/dir.c:262
 vfs_unlink+0x613/0xab0 fs/namei.c:4595
 do_unlinkat+0x6e6/0xe50 fs/namei.c:4659
 __do_sys_unlinkat fs/namei.c:4700 [inline]
 __se_sys_unlinkat fs/namei.c:4693 [inline]
 __x64_sys_unlinkat+0x1a5/0x210 fs/namei.c:4693
 x64_sys_call+0x2be5/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:264
 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:4154 [inline]
 slab_alloc_node mm/slub.c:4197 [inline]
 __do_kmalloc_node mm/slub.c:4327 [inline]
 __kmalloc_noprof+0x95f/0x1310 mm/slub.c:4340
 kmalloc_noprof include/linux/slab.h:909 [inline]
 hfs_find_init+0x93/0x260 fs/hfs/bfind.c:21
 hfs_free_fork+0x392/0xa70 fs/hfs/extent.c:316
 hfs_cat_delete+0x47c/0xb90 fs/hfs/catalog.c:247
 hfs_remove+0x167/0x310 fs/hfs/dir.c:262
 vfs_unlink+0x613/0xab0 fs/namei.c:4595
 do_unlinkat+0x6e6/0xe50 fs/namei.c:4659
 __do_sys_unlinkat fs/namei.c:4700 [inline]
 __se_sys_unlinkat fs/namei.c:4693 [inline]
 __x64_sys_unlinkat+0x1a5/0x210 fs/namei.c:4693
 x64_sys_call+0x2be5/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:264
 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: 0 UID: 0 PID: 17004 Comm: syz.6.2617 Tainted: G        W           6.16.0-syzkaller #0 PREEMPT(none) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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