diff options
| author | Alexei Starovoitov <ast@kernel.org> | 2023-03-25 17:02:06 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-03-25 17:02:06 -0700 |
| commit | e99360762a9cbd93bf1d352e90df5df78daa2f90 (patch) | |
| tree | 4f46a712b5334598eddf869b913f7b887c07178c /tools/testing/selftests/bpf/verifier/array_access.c | |
| parent | 496f4f1b0f8e01baea22e6573f60af8cfd84df48 (diff) | |
| parent | ffb515c933a9e8000e50b03f76569ffb6ef4d39d (diff) | |
Merge branch 'First set of verifier/*.c migrated to inline assembly'
Eduard Zingerman says:
====================
This is a follow up for RFC [1]. It migrates a first batch of 38
verifier/*.c tests to inline assembly and use of ./test_progs for
actual execution. The migration is done by a python script (see [2]).
Each migrated verifier/xxx.c file is mapped to progs/verifier_xxx.c
plus an entry in the prog_tests/verifier.c. One patch per each file.
A few patches at the beginning of the patch-set extend test_loader
with necessary functionality, mainly:
- support for tests execution in unprivileged mode;
- support for test runs for test programs.
Migrated tests could be selected for execution using the following filter:
./test_progs -a verifier_*
An example of the migrated test:
SEC("xdp")
__description("XDP pkt read, pkt_data' > pkt_end, corner case, good access")
__success __retval(0) __flag(BPF_F_ANY_ALIGNMENT)
__naked void end_corner_case_good_access_1(void)
{
asm volatile (" \
r2 = *(u32*)(r1 + %[xdp_md_data]); \
r3 = *(u32*)(r1 + %[xdp_md_data_end]); \
r1 = r2; \
r1 += 8; \
if r1 > r3 goto l0_%=; \
r0 = *(u64*)(r1 - 8); \
l0_%=: r0 = 0; \
exit; \
" :
: __imm_const(xdp_md_data, offsetof(struct xdp_md, data)),
__imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end))
: __clobber_all);
}
Changes compared to RFC:
- test_loader.c is extended to support test program runs;
- capabilities handling now matches behavior of test_verifier;
- BPF_ST_MEM instructions are automatically replaced by BPF_STX_MEM
instructions to overcome current clang limitations;
- tests styling updates according to RFC feedback;
- 38 migrated files are included instead of 1.
I used the following means for testing:
- migration tool itself has a set of self-tests;
- migrated tests are passing;
- manually compared each old/new file side-by-side.
While doing side-by-side comparison I've noted a few defects in the
original tests:
- and.c:
- One of the jump targets is off by one;
- BPF_ST_MEM wrong OFF/IMM ordering;
- array_access.c:
- BPF_ST_MEM wrong OFF/IMM ordering;
- value_or_null.c:
- BPF_ST_MEM wrong OFF/IMM ordering.
These defects would be addressed separately.
[1] RFC
https://lore.kernel.org/bpf/20230123145148.2791939-1-eddyz87@gmail.com/
[2] Migration tool
https://github.com/eddyz87/verifier-tests-migrator
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/verifier/array_access.c')
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/array_access.c | 379 |
1 files changed, 0 insertions, 379 deletions
diff --git a/tools/testing/selftests/bpf/verifier/array_access.c b/tools/testing/selftests/bpf/verifier/array_access.c deleted file mode 100644 index 1b138cd2b187..000000000000 --- a/tools/testing/selftests/bpf/verifier/array_access.c +++ /dev/null @@ -1,379 +0,0 @@ -{ - "valid map access into an array with a constant", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_48b = { 3 }, - .errstr_unpriv = "R0 leaks addr", - .result_unpriv = REJECT, - .result = ACCEPT, -}, -{ - "valid map access into an array with a register", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4), - BPF_MOV64_IMM(BPF_REG_1, 4), - BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2), - BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_48b = { 3 }, - .errstr_unpriv = "R0 leaks addr", - .result_unpriv = REJECT, - .result = ACCEPT, - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "valid map access into an array with a variable", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 5), - BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0), - BPF_JMP_IMM(BPF_JGE, BPF_REG_1, MAX_ENTRIES, 3), - BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2), - BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_48b = { 3 }, - .errstr_unpriv = "R0 leaks addr", - .result_unpriv = REJECT, - .result = ACCEPT, - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "valid map access into an array with a signed variable", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 9), - BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0), - BPF_JMP32_IMM(BPF_JSGT, BPF_REG_1, 0xffffffff, 1), - BPF_MOV32_IMM(BPF_REG_1, 0), - BPF_MOV32_IMM(BPF_REG_2, MAX_ENTRIES), - BPF_JMP_REG(BPF_JSGT, BPF_REG_2, BPF_REG_1, 1), - BPF_MOV32_IMM(BPF_REG_1, 0), - BPF_ALU32_IMM(BPF_LSH, BPF_REG_1, 2), - BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_48b = { 3 }, - .errstr_unpriv = "R0 leaks addr", - .result_unpriv = REJECT, - .result = ACCEPT, - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "invalid map access into an array with a constant", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, (MAX_ENTRIES + 1) << 2, - offsetof(struct test_val, foo)), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_48b = { 3 }, - .errstr = "invalid access to map value, value_size=48 off=48 size=8", - .result = REJECT, -}, -{ - "invalid map access into an array with a register", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4), - BPF_MOV64_IMM(BPF_REG_1, MAX_ENTRIES + 1), - BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2), - BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_48b = { 3 }, - .errstr = "R0 min value is outside of the allowed memory range", - .result = REJECT, - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "invalid map access into an array with a variable", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4), - BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0), - BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2), - BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_48b = { 3 }, - .errstr = "R0 unbounded memory access, make sure to bounds check any such access", - .result = REJECT, - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "invalid map access into an array with no floor check", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7), - BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0), - BPF_MOV32_IMM(BPF_REG_2, MAX_ENTRIES), - BPF_JMP_REG(BPF_JSGT, BPF_REG_2, BPF_REG_1, 1), - BPF_MOV32_IMM(BPF_REG_1, 0), - BPF_ALU32_IMM(BPF_LSH, BPF_REG_1, 2), - BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_48b = { 3 }, - .errstr_unpriv = "R0 leaks addr", - .errstr = "R0 unbounded memory access", - .result_unpriv = REJECT, - .result = REJECT, - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "invalid map access into an array with a invalid max check", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7), - BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0), - BPF_MOV32_IMM(BPF_REG_2, MAX_ENTRIES + 1), - BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_1, 1), - BPF_MOV32_IMM(BPF_REG_1, 0), - BPF_ALU32_IMM(BPF_LSH, BPF_REG_1, 2), - BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_48b = { 3 }, - .errstr_unpriv = "R0 leaks addr", - .errstr = "invalid access to map value, value_size=48 off=44 size=8", - .result_unpriv = REJECT, - .result = REJECT, - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "invalid map access into an array with a invalid max check", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 10), - BPF_MOV64_REG(BPF_REG_8, BPF_REG_0), - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), - BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_8), - BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, - offsetof(struct test_val, foo)), - BPF_EXIT_INSN(), - }, - .fixup_map_hash_48b = { 3, 11 }, - .errstr = "R0 pointer += pointer", - .result = REJECT, - .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, -}, -{ - "valid read map access into a read-only array 1", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .fixup_map_array_ro = { 3 }, - .result = ACCEPT, - .retval = 28, -}, -{ - "valid read map access into a read-only array 2", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 6), - - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_2, 4), - BPF_MOV64_IMM(BPF_REG_3, 0), - BPF_MOV64_IMM(BPF_REG_4, 0), - BPF_MOV64_IMM(BPF_REG_5, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, - BPF_FUNC_csum_diff), - BPF_ALU64_IMM(BPF_AND, BPF_REG_0, 0xffff), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .fixup_map_array_ro = { 3 }, - .result = ACCEPT, - .retval = 65507, -}, -{ - "invalid write map access into a read-only array 1", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 42), - BPF_EXIT_INSN(), - }, - .fixup_map_array_ro = { 3 }, - .result = REJECT, - .errstr = "write into map forbidden", -}, -{ - "invalid write map access into a read-only array 2", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 5), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_MOV64_IMM(BPF_REG_2, 0), - BPF_MOV64_REG(BPF_REG_3, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_4, 8), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, - BPF_FUNC_skb_load_bytes), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .fixup_map_array_ro = { 4 }, - .result = REJECT, - .errstr = "write into map forbidden", -}, -{ - "valid write map access into a write-only array 1", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 42), - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .fixup_map_array_wo = { 3 }, - .result = ACCEPT, - .retval = 1, -}, -{ - "valid write map access into a write-only array 2", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 5), - BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), - BPF_MOV64_IMM(BPF_REG_2, 0), - BPF_MOV64_REG(BPF_REG_3, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_4, 8), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, - BPF_FUNC_skb_load_bytes), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .fixup_map_array_wo = { 4 }, - .result = ACCEPT, - .retval = 0, -}, -{ - "invalid read map access into a write-only array 1", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), - BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .fixup_map_array_wo = { 3 }, - .result = REJECT, - .errstr = "read from map forbidden", -}, -{ - "invalid read map access into a write-only array 2", - .insns = { - BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), - BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), - BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), - BPF_LD_MAP_FD(BPF_REG_1, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), - BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 6), - - BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), - BPF_MOV64_IMM(BPF_REG_2, 4), - BPF_MOV64_IMM(BPF_REG_3, 0), - BPF_MOV64_IMM(BPF_REG_4, 0), - BPF_MOV64_IMM(BPF_REG_5, 0), - BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, - BPF_FUNC_csum_diff), - BPF_EXIT_INSN(), - }, - .prog_type = BPF_PROG_TYPE_SCHED_CLS, - .fixup_map_array_wo = { 3 }, - .result = REJECT, - .errstr = "read from map forbidden", -}, |
