loop4: detected capacity change from 0 to 16
erofs: (device loop4): mounted with root inode @ nid 36.
erofs: (device loop4): z_erofs_lz4_decompress_mem: failed to decompress -13 in[56, 4040] out[917]
=====================================================
BUG: KMSAN: uninit-value in hex_dump_to_buffer+0xae9/0x10f0 lib/hexdump.c:194
 hex_dump_to_buffer+0xae9/0x10f0 lib/hexdump.c:194
 print_hex_dump+0x13d/0x3e0 lib/hexdump.c:276
 z_erofs_lz4_decompress_mem fs/erofs/decompressor.c:252 [inline]
 z_erofs_lz4_decompress+0x257e/0x2a70 fs/erofs/decompressor.c:311
 z_erofs_decompress_pcluster fs/erofs/zdata.c:1290 [inline]
 z_erofs_decompress_queue+0x338c/0x6460 fs/erofs/zdata.c:1372
 z_erofs_runqueue+0x36cd/0x3830
 z_erofs_read_folio+0x435/0x810 fs/erofs/zdata.c:1843
 filemap_read_folio+0xce/0x370 mm/filemap.c:2323
 do_read_cache_folio+0x3b4/0x11e0 mm/filemap.c:3691
 read_cache_folio+0x60/0x80 mm/filemap.c:3723
 erofs_bread+0x286/0x6f0 fs/erofs/data.c:46
 erofs_find_target_block fs/erofs/namei.c:103 [inline]
 erofs_namei+0x2fe/0x1790 fs/erofs/namei.c:177
 erofs_lookup+0x100/0x3c0 fs/erofs/namei.c:206
 lookup_open fs/namei.c:3455 [inline]
 open_last_lookups fs/namei.c:3546 [inline]
 path_openat+0x27d3/0x5c70 fs/namei.c:3776
 do_filp_open+0x20d/0x590 fs/namei.c:3809
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1437
 do_sys_open fs/open.c:1452 [inline]
 __do_compat_sys_openat fs/open.c:1512 [inline]
 __se_compat_sys_openat fs/open.c:1510 [inline]
 __ia32_compat_sys_openat+0x298/0x300 fs/open.c:1510
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:321
 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384
 entry_SYSENTER_compat_after_hwframe+0x70/0x7a

Uninit was created at:
 __alloc_pages+0x9a4/0xe00 mm/page_alloc.c:4591
 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133
 alloc_pages mm/mempolicy.c:2204 [inline]
 folio_alloc+0x1da/0x380 mm/mempolicy.c:2211
 filemap_alloc_folio+0xa5/0x430 mm/filemap.c:974
 do_read_cache_folio+0x163/0x11e0 mm/filemap.c:3655
 read_cache_folio+0x60/0x80 mm/filemap.c:3723
 erofs_bread+0x286/0x6f0 fs/erofs/data.c:46
 erofs_find_target_block fs/erofs/namei.c:103 [inline]
 erofs_namei+0x2fe/0x1790 fs/erofs/namei.c:177
 erofs_lookup+0x100/0x3c0 fs/erofs/namei.c:206
 lookup_open fs/namei.c:3455 [inline]
 open_last_lookups fs/namei.c:3546 [inline]
 path_openat+0x27d3/0x5c70 fs/namei.c:3776
 do_filp_open+0x20d/0x590 fs/namei.c:3809
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1437
 do_sys_open fs/open.c:1452 [inline]
 __do_compat_sys_openat fs/open.c:1512 [inline]
 __se_compat_sys_openat fs/open.c:1510 [inline]
 __ia32_compat_sys_openat+0x298/0x300 fs/open.c:1510
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:321
 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384
 entry_SYSENTER_compat_after_hwframe+0x70/0x7a

CPU: 1 PID: 6346 Comm: syz-executor.4 Not tainted 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
=====================================================