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selftests/bpf: Fix compiler warning in BPF_KPROBE definition in loop6.c 

Add missing return type to BPF_KPROBE definition. Without it, compiler
generates the following warning:

progs/loop6.c:68:12: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
BPF_KPROBE(trace_virtqueue_add_sgs, void *unused, struct scatterlist **sgs,
           ^
1 warning generated.

Fixes: 86a35af628 ("selftests/bpf: Add a verifier scale test with unknown bounded loop")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210309044322.3487636-1-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2021-03-08 20:43:22 -08:00 committed by Daniel Borkmann
parent 34c9a7c5b7
commit 11d39cfeec
1 changed files with 2 additions and 2 deletions
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4
tools/testing/selftests/bpf/progs/loop6.c
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@ -65,8 +65,8 @@ int config = 0;
int result = 0;
SEC("kprobe/virtqueue_add_sgs")
BPF_KPROBE(trace_virtqueue_add_sgs, void *unused, struct scatterlist **sgs,
unsigned int out_sgs, unsigned int in_sgs)
int BPF_KPROBE(trace_virtqueue_add_sgs, void *unused, struct scatterlist **sgs,
unsigned int out_sgs, unsigned int in_sgs)
{
struct scatterlist *sgp = NULL;
__u64 length1 = 0, length2 = 0;