hfsplus: invalid length 256 has been corrected to 255 ================================================================== BUG: KASAN: slab-out-of-bounds in hfsplus_uni2asc+0x5bd/0x1240 fs/hfsplus/unicode.c:210 Read of size 2 at addr ffff88802dfd7218 by task syz.1.16/5944 CPU: 1 PID: 5944 Comm: syz.1.16 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xac/0x220 mm/kasan/report.c:468 kasan_report+0x117/0x150 mm/kasan/report.c:581 hfsplus_uni2asc+0x5bd/0x1240 fs/hfsplus/unicode.c:210 hfsplus_listxattr+0x58f/0xb80 fs/hfsplus/xattr.c:740 vfs_listxattr fs/xattr.c:494 [inline] listxattr+0x107/0x280 fs/xattr.c:842 path_listxattr+0xdd/0x1b0 fs/xattr.c:866 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f2831b8efc9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f282fdb4038 EFLAGS: 00000246 ORIG_RAX: 00000000000000c3 RAX: ffffffffffffffda RBX: 00007f2831de6180 RCX: 00007f2831b8efc9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000080 RBP: 00007f2831c11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2831de6218 R14: 00007f2831de6180 R15: 00007ffc7fc8f038 Allocated by task 5944: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4e/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:198 [inline] __do_kmalloc_node mm/slab_common.c:1007 [inline] __kmalloc+0xb4/0x240 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] hfsplus_find_init+0x89/0x1d0 fs/hfsplus/bfind.c:21 hfsplus_listxattr+0x390/0xb80 fs/hfsplus/xattr.c:699 vfs_listxattr fs/xattr.c:494 [inline] listxattr+0x107/0x280 fs/xattr.c:842 path_listxattr+0xdd/0x1b0 fs/xattr.c:866 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff88802dfd7000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 0 bytes to the right of allocated 536-byte region [ffff88802dfd7000, ffff88802dfd7218) The buggy address belongs to the physical page: page:ffffea0000b7f400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2dfd0 head:ffffea0000b7f400 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000840 ffff888017841dc0 ffffea0000acec00 0000000000000002 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5780, tgid 5780 (sh), ts 78501538587, free_ts 78499691013 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1cd/0x210 mm/page_alloc.c:1554 prep_new_page mm/page_alloc.c:1561 [inline] get_page_from_freelist+0x195c/0x19f0 mm/page_alloc.c:3191 __alloc_pages+0x1e3/0x460 mm/page_alloc.c:4457 alloc_slab_page+0x5d/0x170 mm/slub.c:1881 allocate_slab mm/slub.c:2028 [inline] new_slab+0x87/0x2e0 mm/slub.c:2081 ___slab_alloc+0xc6d/0x1300 mm/slub.c:3253 __slab_alloc mm/slub.c:3339 [inline] __slab_alloc_node mm/slub.c:3392 [inline] slab_alloc_node mm/slub.c:3485 [inline] __kmem_cache_alloc_node+0x1a2/0x260 mm/slub.c:3534 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc+0xa4/0x240 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] kzalloc include/linux/slab.h:721 [inline] tomoyo_init_log+0x1a52/0x1f10 security/tomoyo/audit.c:275 tomoyo_supervisor+0x32d/0x1080 security/tomoyo/common.c:2089 tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline] tomoyo_env_perm+0x14a/0x1e0 security/tomoyo/environ.c:63 tomoyo_environ security/tomoyo/domain.c:672 [inline] tomoyo_find_next_domain+0x1594/0x1a60 security/tomoyo/domain.c:881 tomoyo_bprm_check_security+0x116/0x170 security/tomoyo/tomoyo.c:101 security_bprm_check+0x62/0xa0 security/security.c:1103 search_binary_handler fs/exec.c:1763 [inline] exec_binprm fs/exec.c:1817 [inline] bprm_execve+0xa51/0x16f0 fs/exec.c:1892 do_execveat_common+0x51b/0x6c0 fs/exec.c:1998 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1154 [inline] free_unref_page_prepare+0x7ce/0x8e0 mm/page_alloc.c:2336 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2429 discard_slab mm/slub.c:2127 [inline] __unfreeze_partials+0x1cf/0x210 mm/slub.c:2667 put_cpu_partial+0x17c/0x250 mm/slub.c:2743 __slab_free+0x31d/0x410 mm/slub.c:3700 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x75/0xe0 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x143/0x160 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook+0x6e/0x4d0 mm/slab.h:767 slab_alloc_node mm/slub.c:3495 [inline] __kmem_cache_alloc_node+0x13e/0x260 mm/slub.c:3534 kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1098 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:721 [inline] tomoyo_print_bprm security/tomoyo/audit.c:26 [inline] tomoyo_init_log+0x1104/0x1f10 security/tomoyo/audit.c:264 tomoyo_supervisor+0x32d/0x1080 security/tomoyo/common.c:2089 tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline] tomoyo_env_perm+0x14a/0x1e0 security/tomoyo/environ.c:63 tomoyo_environ security/tomoyo/domain.c:672 [inline] tomoyo_find_next_domain+0x1594/0x1a60 security/tomoyo/domain.c:881 tomoyo_bprm_check_security+0x116/0x170 security/tomoyo/tomoyo.c:101 Memory state around the buggy address: ffff88802dfd7100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802dfd7180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88802dfd7200: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88802dfd7280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88802dfd7300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================