diff --git a/src/arch/aarch64/interrupt/exception.rs b/src/arch/aarch64/interrupt/exception.rs
index cb84e6e7fc..ab2a17d31a 100644
--- a/src/arch/aarch64/interrupt/exception.rs
+++ b/src/arch/aarch64/interrupt/exception.rs
@@ -177,7 +177,7 @@ exception_stack!(synchronous_exception_at_el0, |stack| {
             let ret = syscall::syscall(
                 scratch.x8, scratch.x0, scratch.x1, scratch.x2, scratch.x3, scratch.x4, stack,
             );
-            scratch.x0 = ret;
+            stack.scratch.x0 = ret;
         }
 
         ty => {
diff --git a/syscall b/syscall
index 0bf7b6e73b..a8dfcdf7df 160000
--- a/syscall
+++ b/syscall
@@ -1 +1 @@
-Subproject commit 0bf7b6e73b64b7ec9a858990453d4e40e514cdfe
+Subproject commit a8dfcdf7dfcc3fa13f39c6202d71b03d1bc91066