syzbot

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BUG: KMSAN: uninit-value in hfsplus_lookup+0x66b/0xef0 fs/hfsplus/dir.c:83
 hfsplus_lookup+0x66b/0xef0 fs/hfsplus/dir.c:83
 __lookup_slow+0x506/0x6e0 fs/namei.c:1732
 lookup_slow+0x6a/0xd0 fs/namei.c:1749
 walk_component+0x467/0x650 fs/namei.c:2053
 lookup_last fs/namei.c:2556 [inline]
 path_lookupat+0x27d/0x6f0 fs/namei.c:2580
 filename_lookup+0x22f/0x750 fs/namei.c:2609
 user_path_at+0x85/0x390 fs/namei.c:3016
 ksys_umount fs/namespace.c:2033 [inline]
 __do_sys_umount fs/namespace.c:2041 [inline]
 __se_sys_umount fs/namespace.c:2039 [inline]
 __x64_sys_umount+0x146/0x240 fs/namespace.c:2039
 x64_sys_call+0x2bbd/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:167
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_pages_noprof+0x9a7/0xe00 mm/page_alloc.c:4774
 alloc_pages_mpol_noprof+0x299/0x990 mm/mempolicy.c:2265
 alloc_pages_noprof+0x1bf/0x1e0 mm/mempolicy.c:2345
 alloc_slab_page mm/slub.c:2412 [inline]
 allocate_slab+0x320/0x12e0 mm/slub.c:2578
 new_slab mm/slub.c:2631 [inline]
 ___slab_alloc+0x12ef/0x35e0 mm/slub.c:3818
 __slab_alloc mm/slub.c:3908 [inline]
 __slab_alloc_node mm/slub.c:3961 [inline]
 slab_alloc_node mm/slub.c:4122 [inline]
 kmem_cache_alloc_lru_noprof+0x584/0xb30 mm/slub.c:4153
 hfsplus_alloc_inode+0x5a/0xd0 fs/hfsplus/super.c:633
 alloc_inode+0x86/0x460 fs/inode.c:265
 iget_locked+0x250/0x1290 fs/inode.c:1418
 hfsplus_iget+0x59/0xae0 fs/hfsplus/super.c:64
 hfsplus_btree_open+0x13e/0x1d00 fs/hfsplus/btree.c:150
 hfsplus_fill_super+0x1113/0x2700 fs/hfsplus/super.c:479
 mount_bdev+0x39a/0x520 fs/super.c:1693
 hfsplus_mount+0x4d/0x60 fs/hfsplus/super.c:647
 legacy_get_tree+0x114/0x290 fs/fs_context.c:662
 vfs_get_tree+0xb1/0x5a0 fs/super.c:1814
 do_new_mount+0x71f/0x15e0 fs/namespace.c:3507
 path_mount+0x742/0x1f10 fs/namespace.c:3834
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x722/0x810 fs/namespace.c:4034
 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4034
 x64_sys_call+0x255a/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 5790 Comm: syz-executor162 Not tainted 6.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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