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authorJiong Wang <jiong.wang@netronome.com>2018-12-05 13:52:36 -0500
committerAlexei Starovoitov <ast@kernel.org>2018-12-07 13:30:48 -0800
commitc099f3f413f354ecdd518e4be6a232592e91d5b9 (patch)
tree376ae3306dbeee7a83d76f705159e7de1d61b464 /tools
parentbpf: verifier remove the rejection on BPF_ALU | BPF_ARSH (diff)
downloadlinux-dev-c099f3f413f354ecdd518e4be6a232592e91d5b9.tar.xz
linux-dev-c099f3f413f354ecdd518e4be6a232592e91d5b9.zip
selftests: bpf: update testcases for BPF_ALU | BPF_ARSH
"arsh32 on imm" and "arsh32 on reg" now are accepted. Also added two new testcases to make sure arsh32 won't be treated as arsh64 during interpretation or JIT code-gen for which case the high bits will be moved into low halve that the testcases could catch them. Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/bpf/test_verifier.c29
1 files changed, 25 insertions, 4 deletions
diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
index b4b4a3f93639..36ce58b4933e 100644
--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -721,8 +721,18 @@ static struct bpf_test tests[] = {
BPF_ALU32_IMM(BPF_ARSH, BPF_REG_0, 5),
BPF_EXIT_INSN(),
},
- .result = REJECT,
- .errstr = "unknown opcode c4",
+ .result = ACCEPT,
+ .retval = 0,
+ },
+ {
+ "arsh32 on imm 2",
+ .insns = {
+ BPF_LD_IMM64(BPF_REG_0, 0x1122334485667788),
+ BPF_ALU32_IMM(BPF_ARSH, BPF_REG_0, 7),
+ BPF_EXIT_INSN(),
+ },
+ .result = ACCEPT,
+ .retval = -16069393,
},
{
"arsh32 on reg",
@@ -732,8 +742,19 @@ static struct bpf_test tests[] = {
BPF_ALU32_REG(BPF_ARSH, BPF_REG_0, BPF_REG_1),
BPF_EXIT_INSN(),
},
- .result = REJECT,
- .errstr = "unknown opcode cc",
+ .result = ACCEPT,
+ .retval = 0,
+ },
+ {
+ "arsh32 on reg 2",
+ .insns = {
+ BPF_LD_IMM64(BPF_REG_0, 0xffff55667788),
+ BPF_MOV64_IMM(BPF_REG_1, 15),
+ BPF_ALU32_REG(BPF_ARSH, BPF_REG_0, BPF_REG_1),
+ BPF_EXIT_INSN(),
+ },
+ .result = ACCEPT,
+ .retval = 43724,
},
{
"arsh64 on imm",