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 3ED1D1DFC7; Wed, 3 Jul 2024 10:42:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720003338; cv=none; b=G/2GehwHD70xzIceLnlWwOLsyWdr/10uTZN7H6Z8aFx1Vs8KK0JOsIRUpP78fjKEi2GEC40JnzuiV/kaeW/Da9Kn73+Lr8GiA1Qb4ss+bAoUlHpvqYv2L9DFLGxOZn5ZATeyiOIPJ3PlEr4bYV2yYY+Y1jQ1yrCwcATLbDgMB/w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720003338; c=relaxed/simple; bh=24pwAMMnfr8kHx5+dUxz/5DYqPAnlE00ONworKgE6ls=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CGUsvvewALEv1IaWF9224kVthvY0OOdeRZBYyS/Vvqey34aUSmRo7YrLF0Yw4mHTGt38PwOZK0JWSQvrOahQUKx1ca0zOVkBVz1RXnnYfGqbM6TESurL+Yh02jsWltkGrOcwr7gyu1iiojmr8SQezSSq4DMK9LlUIIV9pOXhm9E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=RMmOJxEP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="RMmOJxEP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 61F37C2BD10; Wed, 3 Jul 2024 10:42:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1720003337; bh=24pwAMMnfr8kHx5+dUxz/5DYqPAnlE00ONworKgE6ls=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RMmOJxEP6nVNaMrVwZMvTRhSbsDt9EAdtSaHmMVJ8uwD9XQIVZrF7h2qJgvcGMnFr O25DHsPAIgAkQ5bCcKwen5sjsPj/eq+yoRmJ+RMBD6YnJPpEtFW556Oj0tuso35Tzi vj1sfGu+E6IVFeQieUs9wP/Lhbfg5xQqzXLc/KX8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Kuniyuki Iwashima , Paolo Abeni , Sasha Levin Subject: [PATCH 4.19 016/139] af_unix: Annotate data-race of sk->sk_shutdown in sk_diag_fill(). Date: Wed, 3 Jul 2024 12:38:33 +0200 Message-ID: <20240703102831.052562924@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240703102830.432293640@linuxfoundation.org> References: <20240703102830.432293640@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kuniyuki Iwashima [ Upstream commit efaf24e30ec39ebbea9112227485805a48b0ceb1 ] While dumping sockets via UNIX_DIAG, we do not hold unix_state_lock(). Let's use READ_ONCE() to read sk->sk_shutdown. Fixes: e4e541a84863 ("sock-diag: Report shutdown for inet and unix sockets (v2)") Signed-off-by: Kuniyuki Iwashima Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- net/unix/diag.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/unix/diag.c b/net/unix/diag.c index 3ff6a623445eb..9376d4d4263f0 100644 --- a/net/unix/diag.c +++ b/net/unix/diag.c @@ -153,7 +153,7 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_r sock_diag_put_meminfo(sk, skb, UNIX_DIAG_MEMINFO)) goto out_nlmsg_trim; - if (nla_put_u8(skb, UNIX_DIAG_SHUTDOWN, sk->sk_shutdown)) + if (nla_put_u8(skb, UNIX_DIAG_SHUTDOWN, READ_ONCE(sk->sk_shutdown))) goto out_nlmsg_trim; nlmsg_end(skb, nlh); -- 2.43.0