diff --git a/.github/workflows/auto-pr-precise.yml b/.github/workflows/auto-pr-precise.yml
index 659933af..b06e5a41 100644
--- a/.github/workflows/auto-pr-precise.yml
+++ b/.github/workflows/auto-pr-precise.yml
@@ -59,6 +59,7 @@ jobs:
         git checkout -b ${{steps.create_branch.outputs.PRBRANCH}}
         echo "TITLE<<__AUTOPR_EOF" >> $GITHUB_OUTPUT
         git log --format="| %s" ${{ github.event.commits[0].id }}~..${{ github.event.after }} | tr '\n' ' ' >> $GITHUB_OUTPUT
+        echo "" >> $GITHUB_OUTPUT
         echo "__AUTOPR_EOF" >> $GITHUB_OUTPUT
         echo "MESSAGE<<__AUTOPR_EOF" >> $GITHUB_OUTPUT
         git log --format="> %B" ${{ github.event.commits[0].id }}~..${{ github.event.after }} >> $GITHUB_OUTPUT
diff --git a/thread/thread.cpp b/thread/thread.cpp
index 9a75fa44..19012261 100644
--- a/thread/thread.cpp
+++ b/thread/thread.cpp
@@ -753,12 +753,20 @@ R"(
 
 DEF_ASM_FUNC(_photon_thread_stub)
 R"(
-        call    _asan_start
-        mov     0x40(%rbp), %rdi
-        movq    $0, 0x40(%rbp)
-        call    *0x48(%rbp)
-        mov     %rax, 0x48(%rbp)
-        mov     %rbp, %rdi
+        mov     %rbp, %rbx
+        xor     %rbp, %rbp
+)"
+#ifdef __SANITIZE_ADDRESS__
+R"(
+        call _asan_start
+)"
+#endif
+R"(
+        mov     0x40(%rbx), %rdi
+        movq    %rbp, 0x40(%rbx)
+        call    *0x48(%rbx)
+        mov     %rax, 0x48(%rbx)
+        mov     %rbx, %rdi
         call    _photon_thread_die
 )"
     );
@@ -818,7 +826,6 @@ R"(
 
 DEF_ASM_FUNC(_photon_thread_stub)
 R"(
-        call    _asan_start
         mov     0x40(%rbp), %rcx
         movq    $0, 0x40(%rbp)
         call    *0x48(%rbp)
@@ -893,13 +900,21 @@ R"(
 )"
 
 DEF_ASM_FUNC(_photon_thread_stub)
+R"(
+        mov x28, x29
+        mov x29, xzr
+)"
+#ifdef __ADDRESS_SANITIZER__
 R"(
         bl _asan_start           //; asan_start()
-        ldp x0, x1, [x29, #0x40] //; load arg, start into x0, x1
-        str xzr, [x29, #0x40]    //; set arg as 0
+)"
+#endif
+R"(
+        ldp x0, x1, [x28, #0x40] //; load arg, start into x0, x1
+        str xzr, [x28, #0x40]    //; set arg as 0
         blr x1                   //; start(x0)
-        str x0, [x29, #0x48]     //; retval = result
-        mov x0, x29              //; move th to x0
+        str x0, [x28, #0x48]     //; retval = result
+        mov x0, x28              //; move th to x0
         b _photon_thread_die     //; _photon_thread_die(th)
 )"
     );
@@ -1284,7 +1299,8 @@ R"(
         return rq.current->error_number;
     }
 
-    inline void thread_yield_fast() {
+    __attribute__((noinline))
+    void thread_yield_fast() {
         auto sw = AtomicRunQ().goto_next();
         switch_context(sw.from, sw.to);
     }