Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2024-07-31

We've added 2 non-merge commits during the last 2 day(s) which contain
a total of 2 files changed, 2 insertions(+), 2 deletions(-).

The main changes are:

1) Fix BPF selftest build after tree sync with regards to a _GNU_SOURCE
   macro redefined compilation error, from Stanislav Fomichev.

2) Fix a wrong test in the ASSERT_OK() check in uprobe_syscall BPF selftest,
   from Jiri Olsa.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf/selftests: Fix ASSERT_OK condition check in uprobe_syscall test
  selftests/bpf: Filter out _GNU_SOURCE when compiling test_cpp
====================

Link: https://patch.msgid.link/20240731115706.19677-1-daniel@iogearbox.netSigned-off-by: Jakub Kicinski <kuba@kernel.org>

tools/testing/selftests/bpf/Makefile

@@ -713,7 +713,7 @@ $(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp
 # Make sure we are able to include and link libbpf against c++.
 $(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
 	$(call msg,CXX,,$@)
-	$(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
+	$(Q)$(CXX) $(subst -D_GNU_SOURCE=,,$(CFLAGS)) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
 
 # Benchmark runner
 $(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)

tools/testing/selftests/bpf/prog_tests/uprobe_syscall.c

@@ -253,7 +253,7 @@ static void test_uretprobe_syscall_call(void)
 	struct uprobe_syscall_executed *skel;
 	int pid, status, err, go[2], c;
 
-	if (ASSERT_OK(pipe(go), "pipe"))
+	if (!ASSERT_OK(pipe(go), "pipe"))
 		return;
 
 	skel = uprobe_syscall_executed__open_and_load();