linux.git/tools/testing/selftests/bpf/test_align.c, branch v4.13

bpf: allow to specify log level and reduce it for test_verifier

2017-07-20T22:20:27+00:00

For the test_verifier case, it's quite hard to parse log level 2 to
figure out what's causing an issue when used to log level 1. We do
want to use bpf_verify_program() in order to simulate some of the
tests with strict alignment. So just add an argument to pass the level
and put it to 1 for test_verifier.

Signed-off-by: Daniel Borkmann 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

selftests/bpf: make correct use of exit codes in bpf selftests

2017-06-13T17:58:56+00:00

The selftests depend on using the shell exit code as a mean of
detecting the success or failure of test-binary executed.  The
appropiate output "[PASS]" or "[FAIL]" in generated by
tools/testing/selftests/lib.mk.

Notice that the exit code is masked with 255. Thus, be careful if
using the number of errors as the exit code, as 256 errors would be
seen as a success.

There are two standard defined exit(3) codes:
 /usr/include/stdlib.h
 #define EXIT_FAILURE    1       /* Failing exit status.  */
 #define EXIT_SUCCESS    0       /* Successful exit status.  */

Fix test_verifier.c to not use the negative value of variable
"results", but instead return EXIT_FAILURE.

Fix test_align.c and test_progs.c to actually use exit codes, before
they were always indicating success regardless of results.

Signed-off-by: Jesper Dangaard Brouer 
Acked-by: Daniel Borkmann 
Reviewed-by: Fengguang Wu 
Signed-off-by: David S. Miller

bpf, tests: set rlimit also for test_align, so it doesn't fail

2017-06-10T23:05:46+00:00

When running all the tests, through 'make run_tests', I had
test_align failing due to insufficient rlimit. Set it the same
way as all other test cases from BPF selftests do, so that
test case properly loads everything.

  [...]
  Summary: 7 PASSED, 1 FAILED
  selftests: test_progs [PASS]
  /home/foo/net-next/tools/testing/selftests/bpf
  Test   0: mov ... Failed to load program.
  FAIL
  Test   1: shift ... Failed to load program.
  FAIL
  Test   2: addsub ... Failed to load program.
  FAIL
  Test   3: mul ... Failed to load program.
  FAIL
  Test   4: unknown shift ... Failed to load program.
  FAIL
  Test   5: unknown mul ... Failed to load program.
  FAIL
  Test   6: packet const offset ... Failed to load program.
  FAIL
  Test   7: packet variable offset ... Failed to load program.
  FAIL
  Results: 0 pass 8 fail
  selftests: test_align [PASS]
  [...]

Signed-off-by: Daniel Borkmann 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

bpf: Handle multiple variable additions into packet pointers in verifier.

2017-05-12T02:48:58+00:00

We must accumulate into reg->aux_off rather than use a plain assignment.

Add a test for this situation to test_align.

Reported-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

bpf: Remove commented out debugging hack in test_align.

2017-05-12T01:41:09+00:00

Reported-by: Alexander Alemayhu 
Signed-off-by: David S. Miller

bpf: Add verifier test case for alignment.

2017-05-11T18:19:00+00:00

Signed-off-by: David S. Miller 
Acked-by: Daniel Borkmann