diff --git a/articles/20220816-riscv-syscall-part4-vdso-implementation.md b/articles/20220816-riscv-syscall-part4-vdso-implementation.md
index c71d482fcd0d1b4f1c3f6d789d8e33c4624ba70b..7a4d79aaa25d8561432834212ca93bd21b7fe977 100644
--- a/articles/20220816-riscv-syscall-part4-vdso-implementation.md
+++ b/articles/20220816-riscv-syscall-part4-vdso-implementation.md
@@ -717,7 +717,8 @@ struct link_map {...}
 
 在 `_dl_sysdep_parse_arguments` 函数中，找到辅助向量的位置并作为参数传递给 `_dl_parse_auxv`。
 
-![auxvec memory layout][4]
+![auxvec memory layout](images/riscv_syscall/auxvec.png)
+（图片源自 LWN.net）
 
 辅助向量在内存中的位置如上图所示，所以只要从栈顶开始，越过 argv（命令行参数）和 environ（环境变量）就能找到辅助向量的地址。
 
diff --git a/articles/images/riscv_syscall/auxvec.png b/articles/images/riscv_syscall/auxvec.png
new file mode 100644
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