This code is supposed to pass negative "err" values for tracing but it
passes positive values instead. The problem is that the
trace_svcsock_tcp_send() function takes a long but "err" is an int and
"sent" is a u32. The negative is first type promoted to u32 so it
becomes a high positive then it is promoted to long and it stays
positive.
Fix this by casting "err" directly to long.
Fixes: 998024dee197 ("SUNRPC: Add more svcsock tracepoints")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
net/sunrpc/svcsock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 9eb5b6b89077..478f857cdaed 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -1174,7 +1174,7 @@ static int svc_tcp_sendto(struct svc_rqst *rqstp)
tcp_sock_set_cork(svsk->sk_sk, true);
err = svc_tcp_sendmsg(svsk->sk_sock, xdr, marker, &sent);
xdr_free_bvec(xdr);
- trace_svcsock_tcp_send(xprt, err < 0 ? err : sent);
+ trace_svcsock_tcp_send(xprt, err < 0 ? (long)err : sent);
if (err < 0 || sent != (xdr->len + sizeof(marker)))
goto out_close;
if (atomic_dec_and_test(&svsk->sk_sendqlen))
--
2.30.2
