@@ -31,6 +31,7 @@
#include "verifier_int_ptr.skel.h"
#include "verifier_jeq_infer_not_null.skel.h"
#include "verifier_ld_ind.skel.h"
+#include "verifier_lds.skel.h"
#include "verifier_leak_ptr.skel.h"
#include "verifier_loops1.skel.h"
#include "verifier_lwt.skel.h"
@@ -132,6 +133,7 @@ void test_verifier_helper_value_access(void) { RUN(verifier_helper_value_access
void test_verifier_int_ptr(void) { RUN(verifier_int_ptr); }
void test_verifier_jeq_infer_not_null(void) { RUN(verifier_jeq_infer_not_null); }
void test_verifier_ld_ind(void) { RUN(verifier_ld_ind); }
+void test_verifier_lds(void) { RUN(verifier_lds); }
void test_verifier_leak_ptr(void) { RUN(verifier_leak_ptr); }
void test_verifier_loops1(void) { RUN(verifier_loops1); }
void test_verifier_lwt(void) { RUN(verifier_lwt); }
new file mode 100644
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include "bpf_misc.h"
+
+SEC("socket")
+__description("LDS, S8")
+__success __success_unpriv __retval(-2)
+__naked void lds_s8(void)
+{
+ asm volatile (" \
+ r1 = 0x3fe; \
+ *(u64 *)(r10 - 8) = r1; \
+ r0 = *(s8 *)(r10 - 8); \
+ exit; \
+" ::: __clobber_all);
+}
+
+SEC("socket")
+__description("LDS, S16")
+__success __success_unpriv __retval(-2)
+__naked void lds_s16(void)
+{
+ asm volatile (" \
+ r1 = 0x3fffe; \
+ *(u64 *)(r10 - 8) = r1; \
+ r0 = *(s16 *)(r10 - 8); \
+ exit; \
+" ::: __clobber_all);
+}
+
+SEC("socket")
+__description("LDS, S32")
+__success __success_unpriv __retval(-2)
+__naked void lds_s32(void)
+{
+ asm volatile (" \
+ r1 = 0xfffffffe; \
+ *(u64 *)(r10 - 8) = r1; \
+ r0 = *(s32 *)(r10 - 8); \
+ exit; \
+" ::: __clobber_all);
+}
+
+char _license[] SEC("license") = "GPL";
Signed-off-by: Yonghong Song <yhs@fb.com> --- .../selftests/bpf/prog_tests/verifier.c | 2 + .../selftests/bpf/progs/verifier_lds.c | 46 +++++++++++++++++++ 2 files changed, 48 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/verifier_lds.c