Geliang Tang wrote:
From: Geliang Tang tanggeliang@kylinos.cn
The value of recv in msg_loop may be negative, like EWOULDBLOCK, so it's necessary to check if it is positive before accumulating it to bytes_recvd.
Fixes: 16962b2404ac ("bpf: sockmap, add selftests") Signed-off-by: Geliang Tang tanggeliang@kylinos.cn
tools/testing/selftests/bpf/test_sockmap.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index 3654babfac59..4c7cb206b31d 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -681,7 +681,8 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, } }
s->bytes_recvd += recv;
if (recv > 0)s->bytes_recvd += recv;if (opt->check_recved_len && s->bytes_recvd > total_bytes) { errno = EMSGSIZE; -- 2.43.0
Acked-by: John Fastabend john.fastabend@gmail.com