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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman Cc: Nguyen Dinh Phi , syzbot+1b2c9c4a0f8708082678@syzkaller.appspotmail.com, virtualization@lists.linux.dev, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] vsock: use sock_error() to consume sk_err after connect timeout Date: Mon, 20 Jul 2026 05:57:47 +0800 Message-ID: <20260719220103.684489-1-phind.uet@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit After vsock_connect() exits the wait loop due to sk->sk_err being set, the error was read but not cleared. This left sk->sk_err set for subsequent operations. Switch to sock_error() which atomically reads and clears sk->sk_err, so the error is consumed when returned. Signed-off-by: Nguyen Dinh Phi Reported-by: syzbot+1b2c9c4a0f8708082678@syzkaller.appspotmail.com --- net/vmw_vsock/af_vsock.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 622dbd046799..43eddc33ed12 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -1847,14 +1847,11 @@ static int vsock_connect(struct socket *sock, struct sockaddr_unsized *addr, prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); } - if (sk->sk_err) { - err = -sk->sk_err; + err = sock_error(sk); + if (err) { sk->sk_state = TCP_CLOSE; sock->state = SS_UNCONNECTED; - } else { - err = 0; } - out_wait: finish_wait(sk_sleep(sk), &wait); out: -- 2.53.0