Index: compiler-rt/lib/hwasan/hwasan_setjmp_x86_64.S
===================================================================
--- compiler-rt/lib/hwasan/hwasan_setjmp_x86_64.S
+++ compiler-rt/lib/hwasan/hwasan_setjmp_x86_64.S
@@ -35,6 +35,7 @@
 ASM_TYPE_FUNCTION(__interceptor_setjmp)
 __interceptor_setjmp:
   CFI_STARTPROC
+  _CET_ENDBR
   xorl %esi, %esi
   jmp	__interceptor_sigsetjmp
   CFI_ENDPROC
@@ -44,6 +45,7 @@
 ASM_TYPE_FUNCTION(__interceptor_sigsetjmp)
 __interceptor_sigsetjmp:
   CFI_STARTPROC
+  _CET_ENDBR
 
   // Save callee save registers.
   mov %rbx, (0*8)(%rdi)
Index: compiler-rt/lib/sanitizer_common/sanitizer_asm.h
===================================================================
--- compiler-rt/lib/sanitizer_common/sanitizer_asm.h
+++ compiler-rt/lib/sanitizer_common/sanitizer_asm.h
@@ -66,3 +66,7 @@
 #else
 #define NO_EXEC_STACK_DIRECTIVE
 #endif
+
+#if defined(__x86_64__) || defined(__i386__)
+#include <cet.h>
+#endif
Index: compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors_vfork_i386.inc.S
===================================================================
--- compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors_vfork_i386.inc.S
+++ compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors_vfork_i386.inc.S
@@ -6,6 +6,7 @@
 .globl ASM_WRAPPER_NAME(vfork)
 ASM_TYPE_FUNCTION(ASM_WRAPPER_NAME(vfork))
 ASM_WRAPPER_NAME(vfork):
+        _CET_ENDBR
         // Store return address in the spill area and tear down the stack frame.
         sub     $12, %esp
         call    COMMON_INTERCEPTOR_SPILL_AREA
Index: compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors_vfork_x86_64.inc.S
===================================================================
--- compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors_vfork_x86_64.inc.S
+++ compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors_vfork_x86_64.inc.S
@@ -6,6 +6,7 @@
 .globl ASM_WRAPPER_NAME(vfork)
 ASM_TYPE_FUNCTION(ASM_WRAPPER_NAME(vfork))
 ASM_WRAPPER_NAME(vfork):
+        _CET_ENDBR
         // Store return address in the spill area and tear down the stack frame.
         push    %rcx
         call    COMMON_INTERCEPTOR_SPILL_AREA
Index: compiler-rt/lib/tsan/rtl/tsan_rtl_amd64.S
===================================================================
--- compiler-rt/lib/tsan/rtl/tsan_rtl_amd64.S
+++ compiler-rt/lib/tsan/rtl/tsan_rtl_amd64.S
@@ -13,6 +13,7 @@
 .globl ASM_SYMBOL(__tsan_trace_switch_thunk)
 ASM_SYMBOL(__tsan_trace_switch_thunk):
   CFI_STARTPROC
+  _CET_ENDBR
   # Save scratch registers.
   push %rax
   CFI_ADJUST_CFA_OFFSET(8)
@@ -93,6 +94,7 @@
 .globl ASM_SYMBOL(__tsan_report_race_thunk)
 ASM_SYMBOL(__tsan_report_race_thunk):
   CFI_STARTPROC
+  _CET_ENDBR
   # Save scratch registers.
   push %rax
   CFI_ADJUST_CFA_OFFSET(8)
@@ -185,6 +187,7 @@
 ASM_SYMBOL_INTERCEPTOR(setjmp):
 #endif
   CFI_STARTPROC
+  _CET_ENDBR
   // save env parameter
   push %rdi
   CFI_ADJUST_CFA_OFFSET(8)
@@ -226,6 +229,7 @@
 ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(_setjmp))
 ASM_SYMBOL_INTERCEPTOR(_setjmp):
   CFI_STARTPROC
+  _CET_ENDBR
   // save env parameter
   push %rdi
   CFI_ADJUST_CFA_OFFSET(8)
@@ -267,6 +271,7 @@
 ASM_SYMBOL_INTERCEPTOR(sigsetjmp):
 #endif
   CFI_STARTPROC
+  _CET_ENDBR
   // save env parameter
   push %rdi
   CFI_ADJUST_CFA_OFFSET(8)
@@ -323,6 +328,7 @@
 ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(__sigsetjmp))
 ASM_SYMBOL_INTERCEPTOR(__sigsetjmp):
   CFI_STARTPROC
+  _CET_ENDBR
   // save env parameter
   push %rdi
   CFI_ADJUST_CFA_OFFSET(8)