diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 4299fb5b8d52f05d63e808150f0364f080bd838a..bbc99401b4e7189e8802356c9e4a30b8549c23ce 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -6127,6 +6127,12 @@ bool btf_ctx_access(int off, int size, enum bpf_access_type type,
 		return false;
 	}
 
+	if (size != sizeof(u64)) {
+		bpf_log(log, "func '%s' size %d must be 8\n",
+			tname, size);
+		return false;
+	}
+
 	/* check for PTR_TO_RDONLY_BUF_OR_NULL or PTR_TO_RDWR_BUF_OR_NULL */
 	for (i = 0; i < prog->aux->ctx_arg_info_size; i++) {
 		const struct bpf_ctx_arg_aux *ctx_arg_info = &prog->aux->ctx_arg_info[i];
diff --git a/tools/testing/selftests/bpf/progs/verifier_btf_ctx_access.c b/tools/testing/selftests/bpf/progs/verifier_btf_ctx_access.c
index a570e48b917accb6e4d08186f89a670c73b5b7f0..bfc3bf18fed4fefceec59bbbcc0a5c26207ab04c 100644
--- a/tools/testing/selftests/bpf/progs/verifier_btf_ctx_access.c
+++ b/tools/testing/selftests/bpf/progs/verifier_btf_ctx_access.c
@@ -11,7 +11,7 @@ __success __retval(0)
 __naked void btf_ctx_access_accept(void)
 {
 	asm volatile ("					\
-	r2 = *(u32*)(r1 + 8);		/* load 2nd argument value (int pointer) */\
+	r2 = *(u64 *)(r1 + 8);		/* load 2nd argument value (int pointer) */\
 	r0 = 0;						\
 	exit;						\
 "	::: __clobber_all);
@@ -23,7 +23,7 @@ __success __retval(0)
 __naked void ctx_access_u32_pointer_accept(void)
 {
 	asm volatile ("					\
-	r2 = *(u32*)(r1 + 0);		/* load 1nd argument value (u32 pointer) */\
+	r2 = *(u64 *)(r1 + 0);		/* load 1nd argument value (u32 pointer) */\
 	r0 = 0;						\
 	exit;						\
 "	::: __clobber_all);
diff --git a/tools/testing/selftests/bpf/progs/verifier_d_path.c b/tools/testing/selftests/bpf/progs/verifier_d_path.c
index ec79cbcfde91efe6df4f9aba6e92b280e07b681f..87e51a215558fda3c60e71cf99c18e9ebccfbaf5 100644
--- a/tools/testing/selftests/bpf/progs/verifier_d_path.c
+++ b/tools/testing/selftests/bpf/progs/verifier_d_path.c
@@ -11,7 +11,7 @@ __success __retval(0)
 __naked void d_path_accept(void)
 {
 	asm volatile ("					\
-	r1 = *(u32*)(r1 + 0);				\
+	r1 = *(u64 *)(r1 + 0);				\
 	r2 = r10;					\
 	r2 += -8;					\
 	r6 = 0;						\
@@ -31,7 +31,7 @@ __failure __msg("helper call is not allowed in probe")
 __naked void d_path_reject(void)
 {
 	asm volatile ("					\
-	r1 = *(u32*)(r1 + 0);				\
+	r1 = *(u64 *)(r1 + 0);				\
 	r2 = r10;					\
 	r2 += -8;					\
 	r6 = 0;						\