From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C648053B7 for ; Wed, 9 Aug 2023 10:54:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 48A4EC433C8; Wed, 9 Aug 2023 10:54:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691578474; bh=1OZHGzEbOBC4KhqkNqRUSsaIM1HY3hDtUm1LMFcfuVg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Oj1Qz+nVibkS//OlUbTTa1+gig2VXp7Kf/gElkXQRmrHGBhWq8vJHK0X2F6MA8qKd Y/jiRC+tSN9GHVgjxqVKgoI/L74embWpIQ0O7TDMcBiJOcn9BChw3HGJsd0l+yME38 NBB9WGhGJQ/56Nbmn9nr/diM4OfSZ6KXPAn8rfRM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Eric Dumazet , "David S. Miller" , Sasha Levin Subject: [PATCH 6.1 043/127] net: add missing data-race annotation for sk_ll_usec Date: Wed, 9 Aug 2023 12:40:30 +0200 Message-ID: <20230809103638.101778157@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809103636.615294317@linuxfoundation.org> References: <20230809103636.615294317@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Eric Dumazet [ Upstream commit e5f0d2dd3c2faa671711dac6d3ff3cef307bcfe3 ] In a prior commit I forgot that sk_getsockopt() reads sk->sk_ll_usec without holding a lock. Fixes: 0dbffbb5335a ("net: annotate data race around sk_ll_usec") Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/core/sock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/sock.c b/net/core/sock.c index 61bbe6263f98e..ff52d51dfe2c5 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1845,7 +1845,7 @@ int sk_getsockopt(struct sock *sk, int level, int optname, #ifdef CONFIG_NET_RX_BUSY_POLL case SO_BUSY_POLL: - v.val = sk->sk_ll_usec; + v.val = READ_ONCE(sk->sk_ll_usec); break; case SO_PREFER_BUSY_POLL: v.val = READ_ONCE(sk->sk_prefer_busy_poll); -- 2.40.1