linux-kernel - Re: [RFC PATCH v2 1/2] vsock: send SIGPIPE on write to shutdowned socket

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <gqhfmvel7kkglvaco5lnjiggfj57j7ie5erp6vjvfmm5ifwsw5@o2tzqsnvoc7x>
Date:   Thu, 31 Aug 2023 17:00:40 +0200
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     Arseniy Krasnov <avkrasnov@...utedevices.com>
Cc:     Stefan Hajnoczi <stefanha@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Bobby Eshleman <bobby.eshleman@...edance.com>,
        kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...rdevices.ru, oxffffaa@...il.com
Subject: Re: [RFC PATCH v2 1/2] vsock: send SIGPIPE on write to shutdowned
 socket

On Sat, Aug 26, 2023 at 08:58:59PM +0300, Arseniy Krasnov wrote:
>POSIX requires to send SIGPIPE on write to SOCK_STREAM socket which was
>shutdowned with SHUT_WR flag or its peer was shutdowned with SHUT_RD
>flag. Also we must not send SIGPIPE if MSG_NOSIGNAL flag is set.
>
>Signed-off-by: Arseniy Krasnov <avkrasnov@...utedevices.com>
>---
> net/vmw_vsock/af_vsock.c | 3 +++
> 1 file changed, 3 insertions(+)

Reviewed-by: Stefano Garzarella <sgarzare@...hat.com>

>
>diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
>index 020cf17ab7e4..013b65241b65 100644
>--- a/net/vmw_vsock/af_vsock.c
>+++ b/net/vmw_vsock/af_vsock.c
>@@ -1921,6 +1921,9 @@ static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg,
> 			err = total_written;
> 	}
> out:
>+	if (sk->sk_type == SOCK_STREAM)
>+		err = sk_stream_error(sk, msg->msg_flags, err);
>+
> 	release_sock(sk);
> 	return err;
> }
>-- 
>2.25.1
>