Revert "selftests/bpf: check null propagation only neither reg is PTR_TO_BTF_ID"

This reverts commit c2e5bb709bacbd8cd0bdb8348afe717e3ce62bc2.

Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/tools/testing/selftests/bpf/prog_tests/jeq_infer_not_null.c b/tools/testing/selftests/bpf/prog_tests/jeq_infer_not_null.c
deleted file mode 100644 (file)
index 3add34d..0000000
--- a/tools/testing/selftests/bpf/prog_tests/jeq_infer_not_null.c
+++ /dev/null
@@ -1,9 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include <test_progs.h>
-#include "jeq_infer_not_null_fail.skel.h"
-
-void test_jeq_infer_not_null(void)
-{
-       RUN_TESTS(jeq_infer_not_null_fail);
-}

diff --git a/tools/testing/selftests/bpf/progs/jeq_infer_not_null_fail.c b/tools/testing/selftests/bpf/progs/jeq_infer_not_null_fail.c
deleted file mode 100644 (file)
index f469650..0000000
--- a/tools/testing/selftests/bpf/progs/jeq_infer_not_null_fail.c
+++ /dev/null
@@ -1,42 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include "vmlinux.h"
-#include <bpf/bpf_helpers.h>
-#include "bpf_misc.h"
-
-char _license[] SEC("license") = "GPL";
-
-struct {
-       __uint(type, BPF_MAP_TYPE_HASH);
-       __uint(max_entries, 1);
-       __type(key, u64);
-       __type(value, u64);
-} m_hash SEC(".maps");
-
-SEC("?raw_tp")
-__failure __msg("R8 invalid mem access 'map_value_or_null")
-int jeq_infer_not_null_ptr_to_btfid(void *ctx)
-{
-       struct bpf_map *map = (struct bpf_map *)&m_hash;
-       struct bpf_map *inner_map = map->inner_map_meta;
-       u64 key = 0, ret = 0, *val;
-
-       val = bpf_map_lookup_elem(map, &key);
-       /* Do not mark ptr as non-null if one of them is
-        * PTR_TO_BTF_ID (R9), reject because of invalid
-        * access to map value (R8).
-        *
-        * Here, we need to inline those insns to access
-        * R8 directly, since compiler may use other reg
-        * once it figures out val==inner_map.
-        */
-       asm volatile("r8 = %[val];\n"
-                    "r9 = %[inner_map];\n"
-                    "if r8 != r9 goto +1;\n"
-                    "%[ret] = *(u64 *)(r8 +0);\n"
-                    : [ret] "+r"(ret)
-                    : [inner_map] "r"(inner_map), [val] "r"(val)
-                    : "r8", "r9");
-
-       return ret;
-}