5.4-stable review patch. If anyone has any objections, please let me know.
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From: Jakub Kicinski kuba@kernel.org
[ Upstream commit bfc06e1aaa130b86a81ce3c41ec71a2f5e191690 ]
'recv_end:' checks num_async and decrypted, and is then followed by the 'end' label. Since we know that decrypted and num_async are 0 at the start we can jump to 'end'.
Move the init of decrypted and num_async to let the compiler catch if I'm wrong.
Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: David S. Miller davem@davemloft.net Stable-dep-of: fdfbaec5923d ("tls: stop recv() if initial process_rx_list gave us non-DATA") Signed-off-by: Sasha Levin sashal@kernel.org --- net/tls/tls_sw.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index 38592d0871a3f..606a51237c50f 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -1748,6 +1748,7 @@ int tls_sw_recvmsg(struct sock *sk, struct tls_sw_context_rx *ctx = tls_sw_ctx_rx(tls_ctx); struct tls_prot_info *prot = &tls_ctx->prot_info; struct sk_psock *psock; + int num_async, pending; unsigned char control = 0; ssize_t decrypted = 0; struct strp_msg *rxm; @@ -1760,8 +1761,6 @@ int tls_sw_recvmsg(struct sock *sk, bool is_kvec = iov_iter_is_kvec(&msg->msg_iter); bool is_peek = flags & MSG_PEEK; bool bpf_strp_enabled; - int num_async = 0; - int pending;
flags |= nonblock;
@@ -1783,12 +1782,14 @@ int tls_sw_recvmsg(struct sock *sk, }
if (len <= copied) - goto recv_end; + goto end;
target = sock_rcvlowat(sk, flags & MSG_WAITALL, len); len = len - copied; timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
+ decrypted = 0; + num_async = 0; while (len && (decrypted + copied < target || ctx->recv_pkt)) { bool retain_skb = false; bool zc = false;