From patchwork Tue Apr 12 06:31:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 560292 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 54ECCC433FE for ; Tue, 12 Apr 2022 07:57:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237601AbiDLH7Z (ORCPT ); Tue, 12 Apr 2022 03:59:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46358 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358685AbiDLHmE (ORCPT ); Tue, 12 Apr 2022 03:42:04 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2CF9C53A78; Tue, 12 Apr 2022 00:18:48 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7D16A6177A; Tue, 12 Apr 2022 07:18:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 87581C385AB; Tue, 12 Apr 2022 07:18:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1649747926; bh=5JSIA/Lvh8ph+aTBot7Q4dH+1Hwb/0nwpJ+yIcQqTJQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XVxztg9UYQwNbyKZQcjFaGR+g73vGdwAGHcJC5JsPFTpREMVgczm9D/uRttYKjka5 f/BDD/VJagAxlj9d3ldjEeOOXS+OvGFR1R1J225rU+ydkW82TkTBQqvS5lxGvscXbs nJA30ue/+NH/codpbk2can6FiNfTjlJdG9HMsmxs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Trond Myklebust , Sasha Levin Subject: [PATCH 5.17 256/343] SUNRPC: Handle low memory situations in call_status() Date: Tue, 12 Apr 2022 08:31:14 +0200 Message-Id: <20220412062958.716975511@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220412062951.095765152@linuxfoundation.org> References: <20220412062951.095765152@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Trond Myklebust [ Upstream commit 9d82819d5b065348ce623f196bf601028e22ed00 ] We need to handle ENFILE, ENOBUFS, and ENOMEM, because xprt_wake_pending_tasks() can be called with any one of these due to socket creation failures. Fixes: b61d59fffd3e ("SUNRPC: xs_tcp_connect_worker{4,6}: merge common code") Signed-off-by: Trond Myklebust Signed-off-by: Sasha Levin --- net/sunrpc/clnt.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index bf1fd6caaf92..0222ad4523a9 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -2364,6 +2364,11 @@ call_status(struct rpc_task *task) case -EPIPE: case -EAGAIN: break; + case -ENFILE: + case -ENOBUFS: + case -ENOMEM: + rpc_delay(task, HZ>>2); + break; case -EIO: /* shutdown or soft timeout */ goto out_exit;