bpf: add further test cases around div/mod and others
Update selftests to relfect recent changes and add various new
test cases.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index e3938e3..4cd9ea9 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -2003,10 +2003,14 @@
{ { 4, 0 }, { 5, 10 } }
},
{
- "INT: DIV by zero",
+ /* This one doesn't go through verifier, but is just raw insn
+ * as opposed to cBPF tests from here. Thus div by 0 tests are
+ * done in test_verifier in BPF kselftests.
+ */
+ "INT: DIV by -1",
.u.insns_int = {
BPF_ALU64_REG(BPF_MOV, R6, R1),
- BPF_ALU64_IMM(BPF_MOV, R7, 0),
+ BPF_ALU64_IMM(BPF_MOV, R7, -1),
BPF_LD_ABS(BPF_B, 3),
BPF_ALU32_REG(BPF_DIV, R0, R7),
BPF_EXIT_INSN(),