diff --git a/kernel/events/core.c b/kernel/events/core.c
index 969f865f9f1cdf5bea57e442cc637ad1570cea86..ee145bdee6edbb7588d02d1577b0d310c293dd74 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -10125,6 +10125,9 @@ static int perf_copy_attr(struct perf_event_attr __user *uattr,
 			ret = -EINVAL;
 	}
 
+	if (!attr->sample_max_stack)
+		attr->sample_max_stack = sysctl_perf_event_max_stack;
+
 	if (attr->sample_type & PERF_SAMPLE_REGS_INTR)
 		ret = perf_reg_validate(attr->sample_regs_intr);
 out:
@@ -10338,9 +10341,6 @@ SYSCALL_DEFINE5(perf_event_open,
 	    perf_paranoid_kernel() && !capable(CAP_SYS_ADMIN))
 		return -EACCES;
 
-	if (!attr.sample_max_stack)
-		attr.sample_max_stack = sysctl_perf_event_max_stack;
-
 	/*
 	 * In cgroup mode, the pid argument is used to pass the fd
 	 * opened to the cgroup directory in cgroupfs. The cpu argument