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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 C2871C4321E for ; Thu, 1 Dec 2022 02:43:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=WWdBsxc/UFsOPrm2l039Q6D0xtaZO+u38WDfUAnLUjE=; b=U2qAtkxaIgkLVE pyFMWU4NZKbC/+BdsoZOe/gnFNtbXXh7KO+W5mrXAEVU8MNMr+iF4dRpLqy1F9RqwS72XLAYiWvgI QguOclVvAPTLMtkVhYGi/UFvaJUE8UflR6P6KLY+VXmSxm4OjtgNnu7To/LYR2YqNcgUhccqnAa+k sQ6bn4fQvkYj2LWLRSGkKhMoW/pFcsy9kJqKiTrjKELXSK/hqMQPWRMdloMGrnxq714p9mDTWWcUh sZwvP9+4M9pX4hhCDU/gJLVWrGnZM5TIEDjQiUBXkQWNv5L7ZVbX0SqHQ/xai9k73Ld2hZs4xkpUG /RpJEllynekAL8GANuoQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p0ZYC-0040BK-14; Thu, 01 Dec 2022 02:43:48 +0000 Received: from mail-ed1-x52a.google.com ([2a00:1450:4864:20::52a]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p0ZY8-00407G-Hu for linux-riscv@lists.infradead.org; Thu, 01 Dec 2022 02:43:46 +0000 Received: by mail-ed1-x52a.google.com with SMTP id s5so542147edc.12 for ; Wed, 30 Nov 2022 18:43:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20210112.gappssmtp.com; s=20210112; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date:from:to :cc:subject:date:message-id:reply-to; bh=WMuFoLwq6if5lfsejZqkU+pkwkmJVnwkSd6yWbaeyOY=; b=QFoku3nZm3W8q3prt+EhbRpDYHxv4fc7ergeIIGsDpA+3Us5h/oncs8WpRUeKomnd0 pO6VNkJd8slm/hEijPmdOIuqWZNazLV9gkrAwJ1ulptle/tSyJChy6osS7TPbu5fukMY 8kQiONr6xYZWU2QR+Yasaf4UX7q0xgko6Kik9x5HBtqiwl9xH4yHYqWQckGrt/xAm5xP Seg86FyFzAHMbABPIJQmygBFBUrIXUxUYSTx3RtmiwEQteE3JQflis3tLloUhcBkaPQp 8mCSNbyfIy1D0e6hSbnKmBBcgRYeQhCO/Nc3Ru18Zt6EsiLncfRYlb5jF1iqjkJ0HfaY /hTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=WMuFoLwq6if5lfsejZqkU+pkwkmJVnwkSd6yWbaeyOY=; b=q/vBfIbjNPZ1ecZJQvyRI+a8E2KJmq/f5izvQjUFFia1wanrhNCmOIczN+fRs9IkAo qn8DkE/aGHX5Oy+e9AGnM9lLmLu6sdFNvTL7DaBi8osqPtl87eiVHQHmQRQ/75DQ9kiG ZWIwJb08E0PcvwI29FfLNaJSwT/IKqqBzdM9q/0qqD/E6W36qgETJ4dlzq0/C1izkEg1 5UpLiokn3gNZLkg2M3kiM7pKP+eKH0KlQNF98EqGk31N5VvU5xgq7FromwhiM2yGtQjv DFtaimBNYwIvnxlkQdYm/4UDpY/Uoc/2bfP5WsBS3Ak3SwCMzTqPjZKGT0Vxvtqz8SE3 wSOA== X-Gm-Message-State: ANoB5plbB8WVrzr2lRF0iPlwYYWJB3uiVA7JcF+nZepO4Yd2exG6HxV5 ODRNi8ngGkkIpk0P701EP3YSW8KfarvDQjXl X-Google-Smtp-Source: AA0mqf6v2PExAoNMrIKI4AK1MjDKAsaOkEr1IGWcxKgj9FPBNjIQkw8GS+pomOGeXWinf7x9/1e4hw== X-Received: by 2002:a05:6402:206b:b0:46a:d5ed:e066 with SMTP id bd11-20020a056402206b00b0046ad5ede066mr24110003edb.335.1669862619507; Wed, 30 Nov 2022 18:43:39 -0800 (PST) Received: from andrea (host-79-26-70-104.retail.telecomitalia.it. [79.26.70.104]) by smtp.gmail.com with ESMTPSA id q3-20020a056402040300b004616b006871sm1210741edv.82.2022.11.30.18.43.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Nov 2022 18:43:38 -0800 (PST) Date: Thu, 1 Dec 2022 03:43:32 +0100 From: Andrea Parri To: Jessica Clarke Cc: Palmer Dabbelt , guoren@kernel.org, jszhang@kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4] riscv: fix race when vmap stack overflow Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221130_184344_799970_2C833F84 X-CRM114-Status: GOOD ( 14.84 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org PiA+Pj4gQEAgLTIzLDYgKzIzLDcgQEAKPiA+Pj4gI2RlZmluZSBSRUdfTCAgICAgICAgICBfX1JF R19TRUwobGQsIGx3KQo+ID4+PiAjZGVmaW5lIFJFR19TICAgICAgICAgIF9fUkVHX1NFTChzZCwg c3cpCj4gPj4+ICNkZWZpbmUgUkVHX1NDICAgICAgICAgX19SRUdfU0VMKHNjLmQsIHNjLncpCj4g Pj4+ICsjZGVmaW5lIFJFR19BTU9TV0FQX0FRIF9fUkVHX1NFTChhbW9zd2FwLmQuYXEsIGFtb3N3 YXAudy5hcSkKPiA+PiBCZWxvdyBpcyB0aGUgcmVhc29uIHdoeSBJIHVzZSB0aGUgcmVsYXggdmVy c2lvbiBoZXJlOgo+ID4+IGh0dHBzOi8vbG9yZS5rZXJuZWwub3JnL2FsbC9DQUpGMmdUUkFFWF9q UV93NUgwNWR5YWZaekhxK1A1ajA1VEo9Qyt2K09MX19HUWFtNEFAbWFpbC5nbWFpbC5jb20vVC8j dQo+ID4gCj4gPiBTb3JyeSwgSSBoYWRuJ3Qgc2VlbiB0aGF0IG9uZS4gIEFkZGluZyBBbmRyZWEu ICBJTU8gdGhlIGFjcXVpcmUvcmVsZWFzZSBwYWlyIGlzIG5lY2Vzc2FyeSBoZXJlLCB3aXRoIGp1 c3QgcmVsYXhlZCB0aGUgc3RhY2sgc3RvcmVzIGluc2lkZSB0aGUgbG9jayBjb3VsZCBzaG93IHVw IG9uIHRoZSBuZXh0IGhhcnQgdHJ5aW5nIHRvIHVzZSB0aGUgc3RhY2suCj4gCj4gSSB0aGluayB3 aGF0IHlvdSByZWFsbHkgd2FudCBpcyBhICpjb25zdW1lKiBiYXJyaWVyLCBhbmQgc2luY2UgeW91 IGhhdmUKPiB0aGUgZGF0YSBkZXBlbmRlbmN5IGJldHdlZW4gdGhlIGFtb3N3YXAgYW5kIHRoZSBt ZW1vcnkgYWNjZXNzZXMgKGFuZAo+IHRoaXMgaXNu4oCZdCBBbHBoYSkgeW914oCZcmUgdGVjaG5p Y2FsbHkgZmluZSB3aXRob3V0IHRoZSBhY3F1aXJlLCBzaW5jZQo+IHlvdeKAmXJlIHdyaXRpbmcg YXNzZW1ibHkgYW5kIGhhdmUgdGhlIGRhdGEgZGVwZW5kZW5jeSBhcyBzeW50YWN0aWMuCj4gVGhv dWdoIHlvdSBtYXkgc3RpbGwgd2FudCAobmVlZD8pIHRoZSBhY3F1aXJlIHNvIGxvYWRzL3N0b3Jl cyB1bnJlbGF0ZWQKPiB0byB0aGUgc3RhY2sgcG9pbnRlciB0aGF0IGhhcHBlbiBsYXRlciBpbiBw cm9ncmFtIG9yZGVyIGdldCBvcmRlcmVkCj4gYWZ0ZXIgdGhlIGxvYWQgb2YgdGhlIG5ldyBzdGFj ayBwb2ludGVyIGluIGNhc2UgdGhlcmUgY291bGQgYmUgd2VpcmQKPiBpc3N1ZXMgKnRoZXJlKi4K CkFncmVlZC4KCkp1c3QgdGhlIGZhY3QgdGhhdCB0aGlzIGlzIHRoZSA0dGggaXRlcmF0aW9uIG9m IHRoaXMgZGlzY3Vzc2lvbiBzdHJvbmdseQpzdWdnZXN0cyB0byBzdGljayB0byB0aGUgYWNxdWly ZSBhbmQgdGhlc2UgaW5saW5lIGNvbW1lbnRzIHRvIG1lLiAgOykKCiAgQW5kcmVhCgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1yaXNjdiBtYWls aW5nIGxpc3QKbGludXgtcmlzY3ZAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5m cmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LXJpc2N2Cg==