From mboxrd@z Thu Jan 1 00:00:00 1970 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 picard.linux.it (picard.linux.it [213.254.12.146]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E9D47C5AD55 for ; Mon, 10 Aug 2026 03:56:49 +0000 (UTC) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id 69B693CB39C for ; Mon, 10 Aug 2026 05:56:48 +0200 (CEST) Received: from in-7.smtp.seeweb.it (in-7.smtp.seeweb.it [217.194.8.7]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by picard.linux.it (Postfix) with ESMTPS id 4A2C53CB270 for ; Mon, 10 Aug 2026 05:56:32 +0200 (CEST) Received: from out-186.mta0.migadu.com (out-186.mta0.migadu.com [IPv6:2001:41d0:1004:224b::ba]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by in-7.smtp.seeweb.it (Postfix) with ESMTPS id 97A2C2000F3 for ; Mon, 10 Aug 2026 05:56:30 +0200 (CEST) Date: Mon, 10 Aug 2026 11:55:58 +0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1786334190; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=MEEi7iiQ0KWcj/efSTLbO49Z5MuUGynMPI/PD6ELhI0=; b=ZFL7kGaAdn58EF2xPSGH7JrrdstYx5+lkoIPEBVJyDdagkMcViDOgzEDhtNA3XTpzMF+CG VS6wAzSdKYV5WWSiC1NERIRW5w2IhNENw4eCPQbRJlwLTZuDZBYO0wFfR0de0sO99SVb8Z gcXu/pqaoVG7ieTfoXlZEaOWAWIi1RY= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Li Wang To: linuxtestproject.agent@gmail.com Message-ID: Mail-Followup-To: linuxtestproject.agent@gmail.com, Wake Liu , ltp@lists.linux.it References: <20260807234935.3248935-1-wakel@google.com> <20260808013246.12398-1-linuxtestproject.agent@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20260808013246.12398-1-linuxtestproject.agent@gmail.com> X-Migadu-Flow: FLOW_OUT X-Virus-Scanned: clamav-milter 1.0.9 at in-7.smtp.seeweb.it X-Virus-Status: Clean Subject: Re: [LTP] lib: Use backoff polling to wait for loop device nodes X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Wake Liu , ltp@lists.linux.it Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Hi Wake, On Sat, Aug 08, 2026 at 01:32:46AM +0000, linuxtestproject.agent@gmail.com wrote: > Hi Wake, > > On Fri, 7 Aug 2026, Wake Liu wrote: > > lib: Use backoff polling to wait for loop device nodes > > > + path_set = TST_RETRY_FN_EXP_BACKOFF( > > + set_dev_loop_path(rc, path, path_len), > > + TST_RETVAL_EQ0, 1); > > Could the backoff arithmetic be made overflow-safe before these two new > uses? > > LTP_TIMEOUT_MUL=3000 is accepted by parse_mul(), which makes Theoretically, this is correct, but I don't think anyone will need a timeout as large as 3000 * 30s for one of LTP test. It would take nearly 25 hours to trigger, which is unrealistic. IOW, your patch v6 is good enough. Sometimes AI agent is too strict. -- Regards, Li Wang -- Mailing list info: https://lists.linux.it/listinfo/ltp