syzbot

loop0: detected capacity change from 0 to 1024
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BUG: KASAN: out-of-bounds in hfsplus_bnode_move+0x650/0x9c4 fs/hfsplus/bnode.c:228
Read of size 18446744073709551602 at addr ffff00000000104e by task syz-executor285/6097

CPU: 1 PID: 6097 Comm: syz-executor285 Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0x174/0x514 mm/kasan/report.c:475
 kasan_report+0xd8/0x138 mm/kasan/report.c:588
 kasan_check_range+0x254/0x294 mm/kasan/generic.c:187
 __asan_memmove+0x3c/0x84 mm/kasan/shadow.c:94
 hfsplus_bnode_move+0x650/0x9c4 fs/hfsplus/bnode.c:228
 hfsplus_brec_insert+0x47c/0xaa0 fs/hfsplus/brec.c:128
 hfsplus_create_attr+0x3b0/0x568 fs/hfsplus/attributes.c:252
 __hfsplus_setxattr+0x980/0x1d00 fs/hfsplus/xattr.c:354
 hfsplus_initxattrs+0x150/0x20c fs/hfsplus/xattr_security.c:59
 security_inode_init_security+0x264/0x428 security/security.c:1668
 hfsplus_init_security+0x40/0x54 fs/hfsplus/xattr_security.c:71
 hfsplus_fill_super+0x1010/0x166c fs/hfsplus/super.c:567
 mount_bdev+0x1e8/0x2b4 fs/super.c:1650
 hfsplus_mount+0x44/0x58 fs/hfsplus/super.c:641
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:662
 vfs_get_tree+0x90/0x288 fs/super.c:1771
 do_new_mount+0x25c/0x8c8 fs/namespace.c:3337
 path_mount+0x590/0xe04 fs/namespace.c:3664
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount fs/namespace.c:3863 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3863
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

The buggy address belongs to the physical page:
page:000000005b08f408 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x40001
flags: 0x1ffc00000000000(node=0|zone=0|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 01ffc00000000000 fffffc0000000048 fffffc0000000048 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff000000000f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff000000000f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff000000001000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                              ^
 ffff000000001080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff000000001100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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