From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 35EB144AB71; Tue, 21 Jul 2026 21:35:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784669752; cv=none; b=OFXU3e6Sx8yf5SxLiIrQR7QCCuPH29CBah/f0dHVySpxt6YuMwOjPNQCm463AC1vzcK3djY4oNfG/0oBKcb9/+NE13SHhRp8xgics5Xmgernp9xLjewMCmTimvShxF9pR/rChtAdRMfqjHmHpRQfqADbIxyCfikRPzTVCRgEdwg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784669752; c=relaxed/simple; bh=MwpsehAnwD7XUgvAW27TCyk+P+WFz4jP4jwF6wzknyI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RuRWq6XjXIJPo7sHMtiV8YCu0OKoE1J++n+wLCtRl48b2RBUYO8K9nCPKyn4RyW+iuBDvkvX3/E5zRNcT7j/Vs5yBKndi+WL/+Tw2MIeLTTfrzkqCICfAbhTXsUVXbarZXlY1yORlD2kxmNfiooC4FoSNMUTxA6QXWFzzdkC4iU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Mv2d5/dp; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Mv2d5/dp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 95EFE1F00A3A; Tue, 21 Jul 2026 21:35:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784669751; bh=ivwnlIuj7QvJex5PCmO0VUuCGvdq9Rq9oIaetHxHXxI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Mv2d5/dp/mvkdmjcMvuRqbDTWrGLBrh//GlAAOaP0l64fC6dvLxrWTZDlKfIiAYY4 S2fR3bxEQCeB93ibp9mZ2DHJRCDsPJKmY7q1403urRQkqozJkaFP4p73osZZU8lzNm TI57HHlivLQU6oDcfYB29Vt8xPQLIzzeRqaWlSGs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, David Howells , Marc Dionne , linux-afs@lists.infradead.org, "Christian Brauner (Amutable)" , Sasha Levin Subject: [PATCH 6.1 0673/1067] afs: Fix vllist leak Date: Tue, 21 Jul 2026 17:21:14 +0200 Message-ID: <20260721152439.650819799@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152424.521567757@linuxfoundation.org> References: <20260721152424.521567757@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Howells [ Upstream commit fc10c0ecf06f2981af5d04357612b00051e03e9e ] Fix a leak of the new vllist in afs_update_cell() in the event that it is an empty list (nr_servers == 0), in which case the old list isn't displaced unless the old list is also empty. Fixes: d5c32c89b208 ("afs: Fix cell DNS lookup") Closes: https://sashiko.dev/#/patchset/20260609081738.770127-1-dhowells%40redhat.com Signed-off-by: David Howells Link: https://patch.msgid.link/20260622090856.2746629-18-dhowells@redhat.com cc: Marc Dionne cc: linux-afs@lists.infradead.org Signed-off-by: Christian Brauner (Amutable) Signed-off-by: Sasha Levin --- fs/afs/cell.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/afs/cell.c b/fs/afs/cell.c index 7c0dce8eecadd1..93f695936fefca 100644 --- a/fs/afs/cell.c +++ b/fs/afs/cell.c @@ -474,6 +474,8 @@ static int afs_update_cell(struct afs_cell *cell) rcu_assign_pointer(cell->vl_servers, vllist); cell->dns_source = vllist->source; old = p; + } else { + old = vllist; } write_unlock(&cell->vl_servers_lock); afs_put_vlserverlist(cell->net, old); -- 2.53.0