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BUG: KMSAN: uninit-value in __hfsplus_ext_read_extent fs/hfsplus/extents.c:167 [inline]
BUG: KMSAN: uninit-value in __hfsplus_ext_cache_extent+0x7cb/0x990 fs/hfsplus/extents.c:191
 __hfsplus_ext_read_extent fs/hfsplus/extents.c:167 [inline]
 __hfsplus_ext_cache_extent+0x7cb/0x990 fs/hfsplus/extents.c:191
 hfsplus_ext_read_extent fs/hfsplus/extents.c:218 [inline]
 hfsplus_file_extend+0x7b5/0x1df0 fs/hfsplus/extents.c:459
 hfsplus_get_block+0xfc3/0x1a20 fs/hfsplus/extents.c:245
 __block_write_begin_int+0xa73/0x3030 fs/buffer.c:2145
 block_write_begin fs/buffer.c:2256 [inline]
 cont_write_begin+0x10e1/0x1bc0 fs/buffer.c:2594
 hfsplus_write_begin+0x85/0x130 fs/hfsplus/inode.c:48
 generic_perform_write+0x362/0x1050 mm/filemap.c:4175
 __generic_file_write_iter+0x213/0x460 mm/filemap.c:4292
 generic_file_write_iter+0x131/0x980 mm/filemap.c:4318
 __kernel_write_iter+0x68b/0xdb0 fs/read_write.c:619
 dump_emit_page fs/coredump.c:1296 [inline]
 dump_user_range+0xda1/0x14c0 fs/coredump.c:1370
 elf_core_dump+0x69ce/0x6c70 fs/binfmt_elf.c:2085
 coredump_write+0x20de/0x2d50 fs/coredump.c:1049
 vfs_coredump+0x4370/0x6020 fs/coredump.c:1168
 get_signal+0x20ab/0x2a20 kernel/signal.c:3019
 arch_do_signal_or_restart+0x53/0xbf0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:40 [inline]
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 irqentry_exit_to_user_mode+0x62/0xa0 kernel/entry/common.c:73
 irqentry_exit+0x16/0x60 kernel/entry/common.c:177
 exc_page_fault+0x76/0xb0 arch/x86/mm/fault.c:1535
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4186 [inline]
 slab_alloc_node mm/slub.c:4229 [inline]
 __do_kmalloc_node mm/slub.c:4364 [inline]
 __kmalloc_noprof+0x95f/0x1310 mm/slub.c:4377
 kmalloc_noprof include/linux/slab.h:909 [inline]
 hfsplus_find_init+0x90/0x1d0 fs/hfsplus/bfind.c:21
 hfsplus_ext_read_extent fs/hfsplus/extents.c:216 [inline]
 hfsplus_file_extend+0x72f/0x1df0 fs/hfsplus/extents.c:459
 hfsplus_get_block+0xfc3/0x1a20 fs/hfsplus/extents.c:245
 __block_write_begin_int+0xa73/0x3030 fs/buffer.c:2145
 block_write_begin fs/buffer.c:2256 [inline]
 cont_write_begin+0x10e1/0x1bc0 fs/buffer.c:2594
 hfsplus_write_begin+0x85/0x130 fs/hfsplus/inode.c:48
 generic_perform_write+0x362/0x1050 mm/filemap.c:4175
 __generic_file_write_iter+0x213/0x460 mm/filemap.c:4292
 generic_file_write_iter+0x131/0x980 mm/filemap.c:4318
 __kernel_write_iter+0x68b/0xdb0 fs/read_write.c:619
 dump_emit_page fs/coredump.c:1296 [inline]
 dump_user_range+0xda1/0x14c0 fs/coredump.c:1370
 elf_core_dump+0x69ce/0x6c70 fs/binfmt_elf.c:2085
 coredump_write+0x20de/0x2d50 fs/coredump.c:1049
 vfs_coredump+0x4370/0x6020 fs/coredump.c:1168
 get_signal+0x20ab/0x2a20 kernel/signal.c:3019
 arch_do_signal_or_restart+0x53/0xbf0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:40 [inline]
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 irqentry_exit_to_user_mode+0x62/0xa0 kernel/entry/common.c:73
 irqentry_exit+0x16/0x60 kernel/entry/common.c:177
 exc_page_fault+0x76/0xb0 arch/x86/mm/fault.c:1535
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623

CPU: 0 UID: 0 PID: 6929 Comm: syz.3.112 Not tainted 6.16.0-syzkaller-11952-g6e64f4580381 #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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