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bpf/selftests: Add verifier tests for loading sleepable programs 

Adding verifier tests for loading all types od allowed
sleepable programs plus reject for tp_btf type.

Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20230117223705.440975-2-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jiri Olsa 2023-01-17 23:37:05 +01:00 committed by Alexei Starovoitov
parent 700e6f853e
commit c0f264e4ed
1 changed files with 91 additions and 0 deletions
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91
tools/testing/selftests/bpf/verifier/sleepable.c Normal file
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{
"sleepable fentry accept",
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACING,
.expected_attach_type = BPF_TRACE_FENTRY,
.kfunc = "bpf_fentry_test1",
.result = ACCEPT,
.flags = BPF_F_SLEEPABLE,
.runs = -1,
},
{
"sleepable fexit accept",
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACING,
.expected_attach_type = BPF_TRACE_FENTRY,
.kfunc = "bpf_fentry_test1",
.result = ACCEPT,
.flags = BPF_F_SLEEPABLE,
.runs = -1,
},
{
"sleepable fmod_ret accept",
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACING,
.expected_attach_type = BPF_MODIFY_RETURN,
.kfunc = "bpf_fentry_test1",
.result = ACCEPT,
.flags = BPF_F_SLEEPABLE,
.runs = -1,
},
{
"sleepable iter accept",
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACING,
.expected_attach_type = BPF_TRACE_ITER,
.kfunc = "task",
.result = ACCEPT,
.flags = BPF_F_SLEEPABLE,
.runs = -1,
},
{
"sleepable lsm accept",
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_LSM,
.kfunc = "bpf",
.expected_attach_type = BPF_LSM_MAC,
.result = ACCEPT,
.flags = BPF_F_SLEEPABLE,
.runs = -1,
},
{
"sleepable uprobe accept",
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_KPROBE,
.kfunc = "bpf_fentry_test1",
.result = ACCEPT,
.flags = BPF_F_SLEEPABLE,
.runs = -1,
},
{
"sleepable raw tracepoint reject",
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACING,
.expected_attach_type = BPF_TRACE_RAW_TP,
.kfunc = "sched_switch",
.result = REJECT,
.errstr = "Only fentry/fexit/fmod_ret, lsm, iter and uprobe programs can be sleepable",
.flags = BPF_F_SLEEPABLE,
.runs = -1,
},