================================================================== BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0x120/0x24c fs/hfsplus/bnode.c:32 Write of size 4026 at addr ffff0000db812800 by task syz-executor.4/9556 CPU: 1 PID: 9556 Comm: syz-executor.4 Not tainted 5.15.153-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 kasan_check_range+0x274/0x2b4 mm/kasan/generic.c:189 memcpy+0xb4/0xe8 mm/kasan/shadow.c:66 hfsplus_bnode_read+0x120/0x24c fs/hfsplus/bnode.c:32 hfsplus_bnode_read_key+0x170/0x278 fs/hfsplus/bnode.c:72 hfsplus_brec_insert+0x520/0xaa0 fs/hfsplus/brec.c:141 hfsplus_create_attr+0x3b0/0x568 fs/hfsplus/attributes.c:252 __hfsplus_setxattr+0x9a8/0x1df0 fs/hfsplus/xattr.c:354 hfsplus_setxattr+0xb4/0xec fs/hfsplus/xattr.c:434 hfsplus_user_setxattr+0x54/0x6c fs/hfsplus/xattr_user.c:30 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277 vfs_setxattr+0x1a8/0x344 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x250/0x2b4 fs/xattr.c:611 path_setxattr+0x17c/0x258 fs/xattr.c:630 __do_sys_setxattr fs/xattr.c:646 [inline] __se_sys_setxattr fs/xattr.c:642 [inline] __arm64_sys_setxattr+0xbc/0xd8 fs/xattr.c:642 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 9556: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc+0x29c/0x4c8 mm/slub.c:4407 kmalloc include/linux/slab.h:596 [inline] hfsplus_find_init+0x84/0x1bc fs/hfsplus/bfind.c:21 hfsplus_create_attr+0x14c/0x568 fs/hfsplus/attributes.c:216 __hfsplus_setxattr+0x9a8/0x1df0 fs/hfsplus/xattr.c:354 hfsplus_setxattr+0xb4/0xec fs/hfsplus/xattr.c:434 hfsplus_user_setxattr+0x54/0x6c fs/hfsplus/xattr_user.c:30 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277 vfs_setxattr+0x1a8/0x344 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x250/0x2b4 fs/xattr.c:611 path_setxattr+0x17c/0x258 fs/xattr.c:630 __do_sys_setxattr fs/xattr.c:646 [inline] __se_sys_setxattr fs/xattr.c:642 [inline] __arm64_sys_setxattr+0xbc/0xd8 fs/xattr.c:642 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3007 [inline] call_rcu+0x118/0xb40 kernel/rcu/tree.c:3087 pwq_unbound_release_workfn+0x214/0x258 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:319 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 The buggy address belongs to the object at ffff0000db812800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 0 bytes inside of 1024-byte region [ffff0000db812800, ffff0000db812c00) The buggy address belongs to the page: page:000000008ace4867 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11b810 head:000000008ace4867 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 fffffc0003a0f800 0000000600000006 ffff0000c0002780 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000db812900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000db812980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff0000db812a00: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000db812a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000db812b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================