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linux/tools/testing/selftests/bpf/verifier
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Martin KaFai Lau e710bcc6d9 bpf: selftest: Ensure the return value of bpf_skc_to helpers must be checked 
This patch tests:

int bpf_cls(struct __sk_buff *skb)
{
	/* REG_6: sk
	 * REG_7: tp
	 * REG_8: req_sk
	 */

	sk = skb->sk;
	if (!sk)
		return 0;

	tp = bpf_skc_to_tcp_sock(sk);
	req_sk = bpf_skc_to_tcp_request_sock(sk);
	if (!req_sk)
		return 0;

	/* !tp has not been tested, so verifier should reject. */
	return *(__u8 *)tp;
}

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201019194219.1051314-1-kafai@fb.com
2020-10-19 15:57:42 -07:00
..
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
and.c
bpf: Add AND verifier test case where 32bit and 64bit bounds differ
2020-09-25 16:47:21 -07:00
array_access.c
bpf: Implement BPF ring buffer and verifier support for it
2020-06-01 14:38:22 -07:00
basic_call.c
…
basic_instr.c
selftests: bpf: add tests for shifts by zero
2019-07-03 11:14:28 +02:00
basic_stack.c
…
basic_stx_ldx.c
…
basic.c
selftests/bpf: Fix test_verifier after introducing resolve_pseudo_ldimm64
2020-10-06 20:16:57 -07:00
bounds_deduction.c
selftests: bpf: break up the rest of test_verifier
2019-01-27 21:37:45 -08:00
bounds_mix_sign_unsign.c
…
bounds.c
selftests/bpf: Add verifier tests for xor operation
2020-08-26 21:47:32 -07:00
bpf_get_stack.c
bpf: Test_verifier, bpf_get_stack return value add <0
2020-03-30 15:00:30 -07:00
calls.c
bpf: Add abnormal return checks.
2020-09-17 19:56:07 -07:00
cfg.c
selftests/bpf: fix tests
2019-06-19 02:22:52 +02:00
cgroup_inv_retcode.c
selftests: bpf: break up the rest of test_verifier
2019-01-27 21:37:45 -08:00
cgroup_skb.c
…
cgroup_storage.c
…
const_or.c
bpf, selftests: Use bpf_probe_read_kernel
2020-06-02 21:04:04 +02:00
ctx_sk_lookup.c
selftests/bpf: Add verifier tests for bpf_sk_lookup context access
2020-07-17 20:18:17 -07:00
ctx_sk_msg.c
selftests/bpf: add "any alignment" annotation for some tests
2019-02-05 16:56:10 +01:00
ctx_skb.c
selftests/bpf: Test new __sk_buff field gso_size
2020-03-03 16:23:59 -08:00
ctx.c
bpf: Add selftest cases for ctx_or_null argument type
2020-03-27 19:40:39 -07:00
d_path.c
selftests/bpf: Add verifier test for d_path helper
2020-08-25 15:41:15 -07:00
dead_code.c
selftests/bpf: Use CAP_BPF and CAP_PERFMON in tests
2020-05-15 17:29:41 +02:00
direct_packet_access.c
bpf: Propagate scalar ranges through register assignments.
2020-10-09 22:03:06 +02:00
direct_stack_access_wraparound.c
…
direct_value_access.c
bpf: Implement BPF ring buffer and verifier support for it
2020-06-01 14:38:22 -07:00
div0.c
…
div_overflow.c
bpf: fix div64 overflow tests to properly detect errors
2019-06-13 23:07:00 +02:00
event_output.c
selftests/bpf: Fix cgroup sockopt verifier test
2020-07-11 01:32:15 +02:00
helper_access_var_len.c
bpf, selftests: Use bpf_probe_read_kernel
2020-06-02 21:04:04 +02:00
helper_packet_access.c
…
helper_value_access.c
bpf, selftests: Use bpf_probe_read_kernel
2020-06-02 21:04:04 +02:00
int_ptr.c
selftests/bpf: Test ARG_PTR_TO_LONG arg type
2019-04-12 13:54:59 -07:00
jit.c
bpf, x32: Fix bug for BPF_JMP | {BPF_JSGT, BPF_JSLE, BPF_JSLT, BPF_JSGE}
2019-05-01 23:32:16 +02:00
jmp32.c
selftests: bpf: Add test for JMP32 JSET BPF_X with upper bits set
2020-03-06 14:17:39 +01:00
jset.c
selftests/bpf: add "any alignment" annotation for some tests
2019-02-05 16:56:10 +01:00
jump.c
bpf: add various test cases for backward jumps
2019-05-13 01:08:55 +02:00
junk_insn.c
…
ld_abs.c
selftests: bpf: break up the rest of test_verifier
2019-01-27 21:37:45 -08:00
ld_dw.c
selftests/bpf: synthetic tests to push verifier limits
2019-04-04 01:27:38 +02:00
ld_imm64.c
selftests/bpf: Fix test_verifier after introducing resolve_pseudo_ldimm64
2020-10-06 20:16:57 -07:00
ld_ind.c
…
leak_ptr.c
…
loops1.c
bpf: Add loop test case with 32 bit reg comparison against 0
2019-10-04 12:27:36 -07:00
lwt.c
…
map_in_map.c
…
map_ptr_mixing.c
bpf: Support access to bpf map fields
2020-06-22 22:22:58 +02:00
map_ptr.c
selftests/bpf: Add test for map_ptr arithmetic
2020-09-08 18:04:07 -07:00
map_ret_val.c
…
masking.c
selftests: bpf: break up the rest of test_verifier
2019-01-27 21:37:45 -08:00
meta_access.c
selftests: bpf: break up the rest of test_verifier
2019-01-27 21:37:45 -08:00
perf_event_sample_period.c
…
precise.c
bpf, selftests: Use bpf_probe_read_kernel
2020-06-02 21:04:04 +02:00
prevent_map_lookup.c
selftests/bpf: Test that lookup on SOCKMAP/SOCKHASH is allowed
2020-04-29 23:30:59 +02:00
raw_stack.c
…
raw_tp_writable.c
selftests: bpf: test writable buffers in raw tps
2019-04-26 19:04:19 -07:00
ref_tracking.c
bpf: selftest: Add ref_tracking verifier test for bpf_skc casting
2020-09-25 13:58:02 -07:00
regalloc.c
bpf: Fix register equivalence tracking.
2020-10-15 16:05:31 +02:00
runtime_jit.c
bpf: Add further test_verifier cases for record_func_key
2019-12-19 13:39:22 -08:00
scale.c
selftests/bpf: two scale tests
2019-04-16 10:18:15 +02:00
search_pruning.c
selftests: bpf: break up the rest of test_verifier
2019-01-27 21:37:45 -08:00
sock.c
bpf: selftest: Ensure the return value of bpf_skc_to helpers must be checked
2020-10-19 15:57:42 -07:00
spill_fill.c
selftests/bpf: add "any alignment" annotation for some tests
2019-02-05 16:56:10 +01:00
spin_lock.c
selftests/bpf: add "any alignment" annotation for some tests
2019-02-05 16:56:10 +01:00
stack_ptr.c
bpf, selftests: Add test for BPF_STX BPF_B storing R10
2020-04-20 19:25:30 -07:00
subreg.c
selftests: bpf: complete sub-register zero extension checks
2019-05-29 13:31:05 +02:00
uninit.c
…
unpriv.c
selftests/bpf: allow specifying helper for BPF_SK_LOOKUP
2019-03-21 18:59:11 -07:00
value_adj_spill.c
…
value_illegal_alu.c
bpf: Forbid XADD on spilled pointers for unprivileged users
2020-04-20 18:41:34 -07:00
value_or_null.c
bpf: Selftests, verifier case for non null pointer map value branch
2020-05-21 17:44:25 -07:00
value_ptr_arith.c
tools/bpf: Add verifier tests for 32bit pointer/scalar arithmetic
2020-06-19 23:34:43 +02:00
value.c
…
var_off.c
selftests/bpf: Test unbounded var_off stack access
2019-04-05 16:50:08 +02:00
wide_access.c
selftests/bpf: add selftests for wide loads
2019-07-15 23:15:53 +02:00
xadd.c
selftests: bpf: break up the rest of test_verifier
2019-01-27 21:37:45 -08:00
xdp_direct_packet_access.c
selftests: bpf: break up the rest of test_verifier
2019-01-27 21:37:45 -08:00
xdp.c
selftests: bpf: break up the rest of test_verifier
2019-01-27 21:37:45 -08:00