bpftool: fix a bug in subskeleton code generation #179
Conversation
|
Master branch: 9492450 |
|
Master branch: a8fee96 |
kernel-patches-bot
force-pushed
the
series/624920=>bpf-next
branch
from
57c2167 to
9f881bd
Compare
|
Master branch: 46e9244 |
kernel-patches-bot
force-pushed
the
series/624920=>bpf-next
branch
from
9f881bd to
676f41c
Compare
|
Master branch: ef07860 |
kernel-patches-bot
force-pushed
the
series/624920=>bpf-next
branch
from
676f41c to
deb70db
Compare
|
Master branch: 7ada378 |
kernel-patches-bot
force-pushed
the
series/624920=>bpf-next
branch
from
deb70db to
73f237d
Compare
|
Master branch: ec80906 |
kernel-patches-bot
force-pushed
the
series/624920=>bpf-next
branch
from
73f237d to
6a73ccd
Compare
|
Master branch: f709869 |
kernel-patches-bot
force-pushed
the
series/624920=>bpf-next
branch
from
6a73ccd to
7bdddbf
Compare
|
Master branch: d0f325c |
kernel-patches-bot
force-pushed
the
series/624920=>bpf-next
branch
from
7bdddbf to
7f18193
Compare
|
Master branch: d8dc09a |
kernel-patches-bot
force-pushed
the
series/624920=>bpf-next
branch
from
7f18193 to
0703f68
Compare
|
Master branch: d56c9fe |
kernel-patches-bot
force-pushed
the
series/624920=>bpf-next
branch
from
0703f68 to
34a2095
Compare
|
Master branch: e581094 |
Compiled with clang by adding LLVM=1 both kernel and selftests/bpf
build, I hit the following compilation error:
In file included from /.../tools/testing/selftests/bpf/prog_tests/subskeleton.c:6:
./test_subskeleton_lib.subskel.h:168:6: error: variable 'err' is used uninitialized whenever
'if' condition is true [-Werror,-Wsometimes-uninitialized]
if (!s->progs)
^~~~~~~~~
./test_subskeleton_lib.subskel.h:181:11: note: uninitialized use occurs here
errno = -err;
^~~
./test_subskeleton_lib.subskel.h:168:2: note: remove the 'if' if its condition is always false
if (!s->progs)
^~~~~~~~~~~~~~
The compilation error is triggered by the following code
...
int err;
obj = (struct test_subskeleton_lib *)calloc(1, sizeof(*obj));
if (!obj) {
errno = ENOMEM;
goto err;
}
...
err:
test_subskeleton_lib__destroy(obj);
errno = -err;
...
in test_subskeleton_lib__open(). The 'err' is not initialized, yet it
is used in 'errno = -err' later.
The fix is to remove 'errno = -err' since errno has been set properly
in all incoming branches.
Cc: Delyan Kratunov <[email protected]>
Fixes: 00389c5 ("00389c58ffe993782a8ba4bb5a34a102b1f6fe24")
Signed-off-by: Yonghong Song <[email protected]>
kernel-patches-bot
force-pushed
the
series/624920=>bpf-next
branch
from
34a2095 to
8d966ad
Compare
|
At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=624920 irrelevant now. Closing PR. |
Add a big batch of selftest to extend test_progs with various tc link, attach ops and old-style tc BPF attachments via libbpf APIs. Also test multi-program attachments including mixing the various attach options: # ./test_progs -t tc_link #179 tc_link_base:OK #180 tc_link_detach:OK #181 tc_link_mix:OK #182 tc_link_opts:OK #183 tc_link_run_base:OK #184 tc_link_run_chain:OK Summary: 6/0 PASSED, 0 SKIPPED, 0 FAILED All new and existing test cases pass. Co-developed-by: Nikolay Aleksandrov <[email protected]> Signed-off-by: Nikolay Aleksandrov <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
Pull request for series with
subject: bpftool: fix a bug in subskeleton code generation
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=624920