=====================================================
BUG: KMSAN: uninit-value in udf_name_from_CS0+0x15aa/0x1ab0 fs/udf/unicode.c:250
 udf_name_from_CS0+0x15aa/0x1ab0 fs/udf/unicode.c:250
 udf_get_filename+0xa4/0x150 fs/udf/unicode.c:390
 udf_pc_to_char fs/udf/symlink.c:82 [inline]
 udf_symlink_filler+0x67c/0x1080 fs/udf/symlink.c:132
 filemap_read_folio+0xd4/0x390 mm/filemap.c:2424
 do_read_cache_folio+0x53f/0xc30 mm/filemap.c:3683
 do_read_cache_page mm/filemap.c:3749 [inline]
 read_cache_page+0x63/0x260 mm/filemap.c:3758
 read_mapping_page include/linux/pagemap.h:769 [inline]
 page_get_link+0x73/0xab0 fs/namei.c:5071
 pick_link+0xd3e/0x1640
 step_into+0x15da/0x16b0 fs/namei.c:1864
 walk_component fs/namei.c:2000 [inline]
 link_path_walk+0xbba/0x1470 fs/namei.c:2321
 path_lookupat+0xd9/0x6f0 fs/namei.c:2474
 filename_lookup+0x250/0x800 fs/namei.c:2504
 user_path_at_empty+0x87/0x3a0 fs/namei.c:2877
 user_path_at include/linux/namei.h:57 [inline]
 path_setxattr+0x82/0x3f0 fs/xattr.c:646
 __do_sys_lsetxattr fs/xattr.c:674 [inline]
 __se_sys_lsetxattr fs/xattr.c:670 [inline]
 __ia32_sys_lsetxattr+0xed/0x170 fs/xattr.c:670
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Uninit was created at:
 __alloc_pages+0x9f6/0xe90 mm/page_alloc.c:5615
 alloc_pages+0xab0/0xd80 mm/mempolicy.c:2277
 folio_alloc+0x42/0x120 mm/mempolicy.c:2287
 filemap_alloc_folio+0xb2/0x460 mm/filemap.c:976
 do_read_cache_folio+0x310/0xc30 mm/filemap.c:3647
 do_read_cache_page mm/filemap.c:3749 [inline]
 read_cache_page+0x63/0x260 mm/filemap.c:3758
 read_mapping_page include/linux/pagemap.h:769 [inline]
 page_get_link+0x73/0xab0 fs/namei.c:5071
 pick_link+0xd3e/0x1640
 step_into+0x15da/0x16b0 fs/namei.c:1864
 walk_component fs/namei.c:2000 [inline]
 link_path_walk+0xbba/0x1470 fs/namei.c:2321
 path_lookupat+0xd9/0x6f0 fs/namei.c:2474
 filename_lookup+0x250/0x800 fs/namei.c:2504
 user_path_at_empty+0x87/0x3a0 fs/namei.c:2877
 user_path_at include/linux/namei.h:57 [inline]
 path_setxattr+0x82/0x3f0 fs/xattr.c:646
 __do_sys_lsetxattr fs/xattr.c:674 [inline]
 __se_sys_lsetxattr fs/xattr.c:670 [inline]
 __ia32_sys_lsetxattr+0xed/0x170 fs/xattr.c:670
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

CPU: 1 PID: 6179 Comm: syz-executor.1 Not tainted 6.3.0-syzkaller-g81af97bdef5e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
=====================================================