bpf: Fix verifier log string check for bad alignment.

[ Upstream commit c01ac66b ]

The message got changed a lot time ago.

This was responsible for 36 test case failures on sparc64.

Fixes: f1174f77 ("bpf/verifier: rework value tracking")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

tools/testing/selftests/bpf/test_verifier.c

@@ -8070,7 +8070,7 @@ static void do_test_single(struct bpf_test *test, bool unpriv,
 
 	reject_from_alignment = fd_prog < 0 &&
 				(test->flags & F_NEEDS_EFFICIENT_UNALIGNED_ACCESS) &&
-				strstr(bpf_vlog, "Unknown alignment.");
+				strstr(bpf_vlog, "misaligned");
 #ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
 	if (reject_from_alignment) {
 		printf("FAIL\nFailed due to alignment despite having efficient unaligned access: '%s'!\n",