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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+0x82c/0x970 fs/hfsplus/extents.c:191
 __hfsplus_ext_read_extent fs/hfsplus/extents.c:167 [inline]
 __hfsplus_ext_cache_extent+0x82c/0x970 fs/hfsplus/extents.c:191
 hfsplus_ext_read_extent fs/hfsplus/extents.c:218 [inline]
 hfsplus_file_extend+0x775/0x1ba0 fs/hfsplus/extents.c:462
 hfsplus_get_block+0xe99/0x1690 fs/hfsplus/extents.c:245
 __block_write_begin_int+0xa6b/0x2f80 fs/buffer.c:2122
 block_write_begin fs/buffer.c:2232 [inline]
 cont_write_begin+0xf82/0x1940 fs/buffer.c:2583
 hfsplus_write_begin+0x85/0x120 fs/hfsplus/inode.c:46
 cont_expand_zero fs/buffer.c:2510 [inline]
 cont_write_begin+0x32f/0x1940 fs/buffer.c:2573
 hfsplus_write_begin+0x85/0x120 fs/hfsplus/inode.c:46
 generic_perform_write+0x4d8/0x1080 mm/filemap.c:4056
 __generic_file_write_iter+0x207/0x460 mm/filemap.c:4157
 generic_file_write_iter+0x102/0x5b0 mm/filemap.c:4183
 __kernel_write_iter+0x675/0xd20 fs/read_write.c:612
 dump_emit_page fs/coredump.c:884 [inline]
 dump_user_range+0x8ed/0xef0 fs/coredump.c:945
 elf_core_dump+0x54f2/0x5ba0 fs/binfmt_elf.c:2127
 do_coredump+0x4336/0x54e0 fs/coredump.c:758
 get_signal+0x24f1/0x2b70 kernel/signal.c:3001
 arch_do_signal_or_restart+0x53/0xcb0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 irqentry_exit_to_user_mode+0xb9/0x150 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x526/0x700 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4091 [inline]
 slab_alloc_node mm/slub.c:4134 [inline]
 __do_kmalloc_node mm/slub.c:4263 [inline]
 __kmalloc_noprof+0x661/0xf30 mm/slub.c:4276
 kmalloc_noprof include/linux/slab.h:883 [inline]
 hfsplus_find_init+0x95/0x1d0 fs/hfsplus/bfind.c:21
 hfsplus_ext_read_extent fs/hfsplus/extents.c:216 [inline]
 hfsplus_file_extend+0x6d8/0x1ba0 fs/hfsplus/extents.c:462
 hfsplus_get_block+0xe99/0x1690 fs/hfsplus/extents.c:245
 __block_write_begin_int+0xa6b/0x2f80 fs/buffer.c:2122
 block_write_begin fs/buffer.c:2232 [inline]
 cont_write_begin+0xf82/0x1940 fs/buffer.c:2583
 hfsplus_write_begin+0x85/0x120 fs/hfsplus/inode.c:46
 cont_expand_zero fs/buffer.c:2510 [inline]
 cont_write_begin+0x32f/0x1940 fs/buffer.c:2573
 hfsplus_write_begin+0x85/0x120 fs/hfsplus/inode.c:46
 generic_perform_write+0x4d8/0x1080 mm/filemap.c:4056
 __generic_file_write_iter+0x207/0x460 mm/filemap.c:4157
 generic_file_write_iter+0x102/0x5b0 mm/filemap.c:4183
 __kernel_write_iter+0x675/0xd20 fs/read_write.c:612
 dump_emit_page fs/coredump.c:884 [inline]
 dump_user_range+0x8ed/0xef0 fs/coredump.c:945
 elf_core_dump+0x54f2/0x5ba0 fs/binfmt_elf.c:2127
 do_coredump+0x4336/0x54e0 fs/coredump.c:758
 get_signal+0x24f1/0x2b70 kernel/signal.c:3001
 arch_do_signal_or_restart+0x53/0xcb0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 irqentry_exit_to_user_mode+0xb9/0x150 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x526/0x700 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623

CPU: 1 UID: 0 PID: 9568 Comm: syz.4.975 Not tainted 6.12.0-syzkaller-01782-gbf9aa14fc523 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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