关键漏洞信息 漏洞类型: 通用保护故障 (General Protection Fault) 受影响函数: 问题描述: 当树指针为NULL时， 方法可能会触发崩溃。 上游提交: 736a0516a16268995f4898eded49bfe077af709 错误日志示例: - OOPS: general protection fault, probably for non-canonical address 0xdffffc0000000008 - KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] - CPU: 2 PID: 0 UID: 0 GID: 0 - RIP: 0010:hfs_find_init+0x86/0x230 - RSP: 0018:ffffc90015157668 EFLAGS: 00010202 - Call Trace: - hfs_ext_read_extent+0x190/0x9d0 - submit_bio_noacct_nocheck+0x2dd/0xce0 - __pfx_hfs_ext_read_extent+0x10/0x10 - hfs_get_block+0x55f/0x830 - block_read_full_folio+0x36d/0x850 - ? __pfx_hfs_get_block+0x10/0x10 - const_folio_flags+0x5b/0x100 - ? __pfx_hfs_read_folio+0x10/0x10 - filemap_read_folio+0xbe/0x290 - ? __filemap_get_folio+0x32b/0xbff6 - do_read_cache_folio+0x263/0x5c0 - ? __pfx_hfs_read_folio+0x10/0x10 - read_cache_page+0x5b/0x160 - hfs_btree_open+0x491/0x1740 - hfs_mdb_get+0x15e2/0x1fb0 - ? __pfx_hfs_mdb_get+0x10/0x10 - find_held_lock+0x2b/0x80