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Wed, 28 Jun 2023 23:38:13 -0700 Received: from twshared15133.05.ash9.facebook.com (2620:10d:c0a8:1c::11) by mail.thefacebook.com (2620:10d:c0a8:82::d) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Wed, 28 Jun 2023 23:38:12 -0700 Received: by devbig309.ftw3.facebook.com (Postfix, from userid 128203) id A18A1221E7DA8; Wed, 28 Jun 2023 23:38:02 -0700 (PDT) From: Yonghong Song To: CC: Alexei Starovoitov , Andrii Nakryiko , Daniel Borkmann , Fangrui Song , Subject: [RFC PATCH bpf-next 08/13] selftests/bpf: Add unit tests for new sign-extension load insns Date: Wed, 28 Jun 2023 23:38:02 -0700 Message-ID: <20230629063802.1652905-1-yhs@fb.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230629063715.1646832-1-yhs@fb.com> References: <20230629063715.1646832-1-yhs@fb.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-GUID: raIlW0bV5SxMqwrhO15Xfhpg5xjugz3c X-Proofpoint-ORIG-GUID: raIlW0bV5SxMqwrhO15Xfhpg5xjugz3c X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-06-28_14,2023-06-27_01,2023-05-22_02 X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Signed-off-by: Yonghong Song --- .../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 diff --git a/tools/testing/selftests/bpf/prog_tests/verifier.c b/tools/te= sting/selftests/bpf/prog_tests/verifier.c index 070a13833c3f..bc05391174c7 100644 --- a/tools/testing/selftests/bpf/prog_tests/verifier.c +++ b/tools/testing/selftests/bpf/prog_tests/verifier.c @@ -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(v= erifier_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_n= ot_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); } diff --git a/tools/testing/selftests/bpf/progs/verifier_lds.c b/tools/tes= ting/selftests/bpf/progs/verifier_lds.c new file mode 100644 index 000000000000..85f3030e0cfd --- /dev/null +++ b/tools/testing/selftests/bpf/progs/verifier_lds.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include "bpf_misc.h" + +SEC("socket") +__description("LDS, S8") +__success __success_unpriv __retval(-2) +__naked void lds_s8(void) +{ + asm volatile (" \ + r1 =3D 0x3fe; \ + *(u64 *)(r10 - 8) =3D r1; \ + r0 =3D *(s8 *)(r10 - 8); \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("LDS, S16") +__success __success_unpriv __retval(-2) +__naked void lds_s16(void) +{ + asm volatile (" \ + r1 =3D 0x3fffe; \ + *(u64 *)(r10 - 8) =3D r1; \ + r0 =3D *(s16 *)(r10 - 8); \ + exit; \ +" ::: __clobber_all); +} + +SEC("socket") +__description("LDS, S32") +__success __success_unpriv __retval(-2) +__naked void lds_s32(void) +{ + asm volatile (" \ + r1 =3D 0xfffffffe; \ + *(u64 *)(r10 - 8) =3D r1; \ + r0 =3D *(s32 *)(r10 - 8); \ + exit; \ +" ::: __clobber_all); +} + +char _license[] SEC("license") =3D "GPL"; --=20 2.34.1