BPF selftest fails to build with below error:
CLNG-BPF [test_progs] lsm_cgroup.bpf.o progs/lsm_cgroup.c:105:21: error: variable has incomplete type 'struct sockaddr_ll' 105 | struct sockaddr_ll sa = {}; | ^ progs/lsm_cgroup.c:105:9: note: forward declaration of 'struct sockaddr_ll' 105 | struct sockaddr_ll sa = {}; | ^ 1 error generated.
lsm_cgroup selftest requires sockaddr_ll structure which is not there in vmlinux.h when the kernel is built with CONFIG_PACKET=m.
Enabling CONFIG_PACKET=y ensures that sockaddr_ll is available in vmlinux, allowing it to be captured in the generated vmlinux.h for bpf selftests.
Reported-by: Sachin P Bappalige sachinpb@linux.ibm.com Signed-off-by: Saket Kumar Bhaskar skb99@linux.ibm.com --- tools/testing/selftests/bpf/config | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/bpf/config b/tools/testing/selftests/bpf/config index f74e1ea0ad3b..7247833fe623 100644 --- a/tools/testing/selftests/bpf/config +++ b/tools/testing/selftests/bpf/config @@ -105,6 +105,7 @@ CONFIG_IP_NF_IPTABLES=y CONFIG_IP6_NF_IPTABLES=y CONFIG_IP6_NF_FILTER=y CONFIG_NF_NAT=y +CONFIG_PACKET=y CONFIG_RC_CORE=y CONFIG_SECURITY=y CONFIG_SECURITYFS=y
On 7/7/25 9:17 AM, Saket Kumar Bhaskar wrote:
BPF selftest fails to build with below error:
CLNG-BPF [test_progs] lsm_cgroup.bpf.o progs/lsm_cgroup.c:105:21: error: variable has incomplete type 'struct sockaddr_ll' 105 | struct sockaddr_ll sa = {}; | ^ progs/lsm_cgroup.c:105:9: note: forward declaration of 'struct sockaddr_ll' 105 | struct sockaddr_ll sa = {}; | ^ 1 error generated.
lsm_cgroup selftest requires sockaddr_ll structure which is not there in vmlinux.h when the kernel is built with CONFIG_PACKET=m.
Enabling CONFIG_PACKET=y ensures that sockaddr_ll is available in vmlinux, allowing it to be captured in the generated vmlinux.h for bpf selftests.
Reported-by: Sachin P Bappalige sachinpb@linux.ibm.com Signed-off-by: Saket Kumar Bhaskar skb99@linux.ibm.com
Acked-by: Daniel Borkmann daniel@iogearbox.net
Hello:
This patch was applied to bpf/bpf-next.git (master) by Alexei Starovoitov ast@kernel.org:
On Mon, 7 Jul 2025 12:47:35 +0530 you wrote:
BPF selftest fails to build with below error:
CLNG-BPF [test_progs] lsm_cgroup.bpf.o progs/lsm_cgroup.c:105:21: error: variable has incomplete type 'struct sockaddr_ll' 105 | struct sockaddr_ll sa = {}; | ^ progs/lsm_cgroup.c:105:9: note: forward declaration of 'struct sockaddr_ll' 105 | struct sockaddr_ll sa = {}; | ^ 1 error generated.
[...]
Here is the summary with links: - selftests/bpf: Set CONFIG_PACKET=y for selftests https://git.kernel.org/bpf/bpf-next/c/0f626c98fd10
You are awesome, thank you!
linux-kselftest-mirror@lists.linaro.org
-
Daniel Borkmann -
patchwork-bot+netdevbpf＠kernel.org -
Saket Kumar Bhaskar