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selftests/bpf: verifier/cgroup_inv_retcode.c converted to inline assembly

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Test verifier/cgroup_inv_retcode.c automatically converted to use inline assembly.

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20230325025524.144043-13-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Eduard Zingerman 2023-03-25 04:54:53 +02:00 committed by Alexei Starovoitov
parent 2f2047c22c
commit 047687a7f4
3 changed files with 91 additions and 72 deletions
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2
tools/testing/selftests/bpf/prog_tests/verifier.c
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@ -9,6 +9,7 @@
#include "verifier_bounds_deduction.skel.h"
#include "verifier_bounds_mix_sign_unsign.skel.h"
#include "verifier_cfg.skel.h"
#include "verifier_cgroup_inv_retcode.skel.h"
__maybe_unused
static void run_tests_aux(const char *skel_name, skel_elf_bytes_fn elf_bytes_factory)
@ -40,3 +41,4 @@ void test_verifier_basic_stack(void) { RUN(verifier_basic_stack); }
void test_verifier_bounds_deduction(void) { RUN(verifier_bounds_deduction); }
void test_verifier_bounds_mix_sign_unsign(void) { RUN(verifier_bounds_mix_sign_unsign); }
void test_verifier_cfg(void) { RUN(verifier_cfg); }
void test_verifier_cgroup_inv_retcode(void) { RUN(verifier_cgroup_inv_retcode); }

89
tools/testing/selftests/bpf/progs/verifier_cgroup_inv_retcode.c Normal file
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@ -0,0 +1,89 @@
// SPDX-License-Identifier: GPL-2.0
/* Converted from tools/testing/selftests/bpf/verifier/cgroup_inv_retcode.c */
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"
SEC("cgroup/sock")
__description("bpf_exit with invalid return code. test1")
__failure __msg("R0 has value (0x0; 0xffffffff)")
__naked void with_invalid_return_code_test1(void)
{
asm volatile (" \
r0 = *(u32*)(r1 + 0); \
exit; \
" ::: __clobber_all);
}
SEC("cgroup/sock")
__description("bpf_exit with invalid return code. test2")
__success
__naked void with_invalid_return_code_test2(void)
{
asm volatile (" \
r0 = *(u32*)(r1 + 0); \
r0 &= 1; \
exit; \
" ::: __clobber_all);
}
SEC("cgroup/sock")
__description("bpf_exit with invalid return code. test3")
__failure __msg("R0 has value (0x0; 0x3)")
__naked void with_invalid_return_code_test3(void)
{
asm volatile (" \
r0 = *(u32*)(r1 + 0); \
r0 &= 3; \
exit; \
" ::: __clobber_all);
}
SEC("cgroup/sock")
__description("bpf_exit with invalid return code. test4")
__success
__naked void with_invalid_return_code_test4(void)
{
asm volatile (" \
r0 = 1; \
exit; \
" ::: __clobber_all);
}
SEC("cgroup/sock")
__description("bpf_exit with invalid return code. test5")
__failure __msg("R0 has value (0x2; 0x0)")
__naked void with_invalid_return_code_test5(void)
{
asm volatile (" \
r0 = 2; \
exit; \
" ::: __clobber_all);
}
SEC("cgroup/sock")
__description("bpf_exit with invalid return code. test6")
__failure __msg("R0 is not a known value (ctx)")
__naked void with_invalid_return_code_test6(void)
{
asm volatile (" \
r0 = r1; \
exit; \
" ::: __clobber_all);
}
SEC("cgroup/sock")
__description("bpf_exit with invalid return code. test7")
__failure __msg("R0 has unknown scalar value")
__naked void with_invalid_return_code_test7(void)
{
asm volatile (" \
r0 = *(u32*)(r1 + 0); \
r2 = *(u32*)(r1 + 4); \
r0 *= r2; \
exit; \
" ::: __clobber_all);
}
char _license[] SEC("license") = "GPL";

72
tools/testing/selftests/bpf/verifier/cgroup_inv_retcode.c
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@ -1,72 +0,0 @@
{
"bpf_exit with invalid return code. test1",
.insns = {
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
BPF_EXIT_INSN(),
},
.errstr = "R0 has value (0x0; 0xffffffff)",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
},
{
"bpf_exit with invalid return code. test2",
.insns = {
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
BPF_ALU64_IMM(BPF_AND, BPF_REG_0, 1),
BPF_EXIT_INSN(),
},
.result = ACCEPT,
.prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
},
{
"bpf_exit with invalid return code. test3",
.insns = {
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
BPF_ALU64_IMM(BPF_AND, BPF_REG_0, 3),
BPF_EXIT_INSN(),
},
.errstr = "R0 has value (0x0; 0x3)",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
},
{
"bpf_exit with invalid return code. test4",
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_EXIT_INSN(),
},
.result = ACCEPT,
.prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
},
{
"bpf_exit with invalid return code. test5",
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 2),
BPF_EXIT_INSN(),
},
.errstr = "R0 has value (0x2; 0x0)",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
},
{
"bpf_exit with invalid return code. test6",
.insns = {
BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
BPF_EXIT_INSN(),
},
.errstr = "R0 is not a known value (ctx)",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
},
{
"bpf_exit with invalid return code. test7",
.insns = {
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, 4),
BPF_ALU64_REG(BPF_MUL, BPF_REG_0, BPF_REG_2),
BPF_EXIT_INSN(),
},
.errstr = "R0 has unknown scalar value",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
},