diff --git a/lib/libc/arch/x86_64/sys/__sigtramp2.S b/lib/libc/arch/x86_64/sys/__sigtramp2.S
index a7205dbe2cda..ec432bbcb704 100644
--- a/lib/libc/arch/x86_64/sys/__sigtramp2.S
+++ b/lib/libc/arch/x86_64/sys/__sigtramp2.S
@@ -42,10 +42,13 @@
  * the signal; the kernel calls the signal handler directly.
  */
 NENTRY(__sigtramp_siginfo_2)
+	.cfi_startproc simple
+	.cfi_signal_frame
 	movq	%r15,%rdi
 	movq	$SYS_setcontext, %rax
 	syscall
 	movq	$-1,%rdi /* if we return here, something is wrong */
 	movq	$SYS_exit, %rax
 	syscall
+	.cfi_endproc
 END(__sigtramp_siginfo_2)