Blacklist new tests that are depending on features in latest kernel. Also
temporarily blacklist raw_tp_test_run test, until it is fixed upstream.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Attempt to first fetch bpf-next tree from a snapshot, falling back to shallow
clone, and if that is not enough, doing a full bpf-next clone. This should
both improve a speed and (because of full clone fallback) improve test
reliability if libbpf wasn't synced in a while.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Blacklist btf_map_in_map permanently for 5.5. bpf_verif_scale is broken due to
Clang issues on latest. Do not run ALU32 flavor for test_progs on 4.9.0, which
doesn't support ALU32 yet.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Whatever happened, clang-11 and llvm-11, to which clang/llvm packages resolve,
respectively, are not there anymore. Seems like clang-12/llvm-12 are the
latest now, but for whatever reason clang/llvm don't resolve to them yet.
Hard-code version 12 for now.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Drop blacklist and instead use a small whitelist of tests that are still
supposed to work on old 4.9 kernel.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Make sure that libbpf sanitizes BTF properly for older kernels.
Add a stage for 4.9.0 kernel in TravisCI.
For now make test failures non-blocking by adding 4.9.0 to `allow_failures`
section.
Blacklist is copy-pasted 5.5.0 kernel blacklist.
Now that pre-generated vmlinux.h is used for compilation of non-latest tests,
we don't need custom adjustments for 5.5 kernel selftests. Adjust blacklist
now that those new self-tests are built into test_progs.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Manually generate vmlinux.h based on latest.config to be used for non-latest
selftest build. This will keep bpftool and newest selftests builds succeeding,
while at runtime blacklist will skip them.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Permanently blacklist load_bytes_relative test on 5.5 due to missing
functionality.
Also temporarily blacklist core_reloc test due to failure on latest kernel.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Disable a bunch of new kernel selftests that can't succeed on 5.5 kernel.
Flatten Travis tests into a single stage to parallelize and speed them up.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
bpf_obj_id selftest added testing of bpf_link related operations, which are
not implemented in 5.5.0. Blacklist it.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
5.5 kernel has a bug in kernel allowing to violate read-only access to
mmap()-ed map. Disable selftest that now is failing.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Enable now-fixed sockmap_listen tests. Disabled vmlinux test on 5.5, on which
hrtimer_nanosleep() signature is incompatible. Filled out remaining
permanently disabled tests resons.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
With fixes in selftests, these tests should now pass.
Also add ability to add comments to blacklist/whitelist to explain why certain
test is disabled.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Generate a disk image for libbpf testing in compressed *.zst format
The mkrootfs.sh has the following stages:
- run pacstrap to install libbpf and selftests dependencies.
- create /etc/fstab w/ bpffs and debugfs filesystems
- create /etc/init.d/rcS to mount in bootime
- create /etc/inittab to invoke /etc/init.d/rcS
- compress an image
In addition ./travis-ci/vmtest/run.sh set up ext4 fs and mounts
it as a loop device:
mkfs.ext4 -q "$tmp"
mount -o loop "$tmp" "$mnt"
Signed-off-by: Julia Kartseva (hex@fb.com)
The disk image is updated to 2020-03-11.
blacklist for LATEST kernel:
attach_probe (needs root cause)
perf_buffer (needs root cause)
send_signal (flaky)
sockmap_listen (flaky)
Run test_maps and test_verifier.
test_maps is not expected to pass for kernels other then LATEST.
Signed-off-by: Julia Kartseva (hex@fb.com)
Set up loopback to enable more tests:
- bpf_tcp_ca
- cgroup_attach_autodetach
- cgroup_attach_multi
- cgroup_attach_override
- select_reuseport
- sockmap_ktls
Signed-off-by: Julia Kartseva hex@fb.com
Build latest pahole from sources and not rely on hacky Ubuntu repository
approach.
Also enable tests for latest kernel that rely on pahole 1.16.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Clean up Travis CI config, extract multi-step initializations into scripts.
Also, move kernel-building tests to happen last to not block lightweight
Debian and Ubuntu tests.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Update blacklists to omit some of the newest selftests. Also ensure that
blacklist is sorted alphabetically.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
- The previously introduced git fetch depth of bpf-next tree is not sufficient
when bpf-next tree is far ahead from libbpf checkpoint commit, so increase the
depth up to 128 max. Since 128 may be an overkill for a general case, increase
exponentially in a loop until max is reached.
- Do not fetch bpf-next twice
- Remove setup_example.sh
Run kernel selftests in vmtest with the goal to test libbpf backward
compatibility with older kernels.
The list of kernels should be specified in .travis.yml config in
`jobs` section, e.g. KERNEL=5.5.0.
Enlisted kernel releases
- 5.5.0 # built from main
- 5.5.0-rc6 # built from bpf-next
- LATEST
The kernel specified as 'LATEST' in .travis.yml is built from bpf-next kernel
tree, the rest of the kernels are downloaded from the specified in INDEX file.
The kernel sources from bpf-next are manually patched with [1] from bpf tree to
fix ranqslower build. This workaround should be removed after the patch is merged
from bpf to bpf-next tree.
Due to kernel sources being checked out the duration of the LATEST kernel test is
~30m.
bpf selftests are built from tools/testing/selftests/bpf/ of bpf-next tree with
HEAD revision set to CHECKPOINT-COMMIT specified in libbpf so selftests and
libbpf are in sync.
Currently only programs are tested with test_progs program, test_maps and
test_verifier should follow.
test_progs are run with blacklist required due to:
- some features, e.g. fentry/fexit are not supported in older kernels
- environment limitations, e.g an absence of the recent pahole in Debian
- incomplete disk image
The blacklist is passed to test_progs with -b option as specified in [2]
patch set.
Most of the preceeding tests are disabled due to incomplete disk image currenly
lacking proper networking settings.
For the LATEST kernel fome fentry/fexit tests are disabled due to pahole v1.16
is not abailible in Debian yet.
Next steps are resolving issues with blacklisted tests, enabling maps and
verifier testing, expanding the list of tested kernels.
[1] https://lore.kernel.org/bpf/908498f794661c44dca54da9e09dc0c382df6fcb.1580425879.git.hex@fb.com/t.mbox.gz
[2] https://www.spinics.net/lists/netdev/msg625192.html
