From 01a0f9e4496d9f54e06abb71bf9f56c617ef8c24 Mon Sep 17 00:00:00 2001
From: Ilya Leoshkevich <iii@linux.ibm.com>
Date: Thu, 18 Jul 2019 11:13:35 +0200
Subject: [PATCH] selftests/bpf: fix "valid read map access into a read-only
array 1" on s390
This test looks up a 32-bit map element and then loads it using a 64-bit
load. This does not work on s390, which is a big-endian machine.
Since the point of this test doesn't seem to be loading a smaller value
using a larger load, simply use a 32-bit load.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---
tools/testing/selftests/bpf/verifier/array_access.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/bpf/verifier/array_access.c b/tools/testing/selftests/bpf/verifier/array_access.c
index bcb83196e459b..f3c33e128709b 100644
--- a/tools/testing/selftests/bpf/verifier/array_access.c
+++ b/tools/testing/selftests/bpf/verifier/array_access.c
@@ -226,7 +226,7 @@
BPF_LD_MAP_FD(BPF_REG_1, 0),
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),
- BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 0),
+ BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.fixup_map_array_ro = { 3 },
--
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