linux-kernel - [PATCH bpf] bpf/tests: Remove test for MOVSX32 with offset=32

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Message-Id: <20231110175150.87803-1-puranjay12@gmail.com>
Date:   Fri, 10 Nov 2023 17:51:50 +0000
From:   Puranjay Mohan <puranjay12@...il.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>,
        Yonghong Song <yonghong.song@...ux.dev>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        Puranjay Mohan <puranjay12@...il.com>,
        bpf@...r.kernel.org (open list:BPF [GENERAL] (Safe Dynamic Programs and
        Tools)), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH bpf] bpf/tests: Remove test for MOVSX32 with offset=32

MOVSX32 only supports sign extending 8-bit and 16-bit operands into 32
bit operands. The "ALU_MOVSX | BPF_W" test tries to sign extend a 32 bit
operand into a 32 bit operand which is equivalent to a normal BPF_MOV.

Remove this test as it tries to run an invalid instruction.

Fixes: daabb2b098e0 ("bpf/tests: add tests for cpuv4 instructions")
Signed-off-by: Puranjay Mohan <puranjay12@...il.com>
Reported-by: kernel test robot <oliver.sang@...el.com>
Closes: https://lore.kernel.org/oe-lkp/202310111838.46ff5b6a-oliver.sang@intel.com
---
 lib/test_bpf.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index 7916503e6a6a..c148f8d1e564 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -5144,22 +5144,6 @@ static struct bpf_test tests[] = {
 		{ },
 		{ { 0, 0x1 } },
 	},
-	{
-		"ALU_MOVSX | BPF_W",
-		.u.insns_int = {
-			BPF_LD_IMM64(R2, 0x00000000deadbeefLL),
-			BPF_LD_IMM64(R3, 0xdeadbeefdeadbeefLL),
-			BPF_MOVSX32_REG(R1, R3, 32),
-			BPF_JMP_REG(BPF_JEQ, R2, R1, 2),
-			BPF_MOV32_IMM(R0, 2),
-			BPF_EXIT_INSN(),
-			BPF_MOV32_IMM(R0, 1),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ },
-		{ { 0, 0x1 } },
-	},
 	/* MOVSX64 REG */
 	{
 		"ALU64_MOVSX | BPF_B",
-- 
2.39.2