From owner-svn-src-all@freebsd.org Wed Jan 24 18:48:52 2018 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E5A78EBE499; Wed, 24 Jan 2018 18:48:51 +0000 (UTC) (envelope-from cse.cem@gmail.com) Received: from mail-io0-f178.google.com (mail-io0-f178.google.com [209.85.223.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 748E071194; Wed, 24 Jan 2018 18:48:51 +0000 (UTC) (envelope-from cse.cem@gmail.com) Received: by mail-io0-f178.google.com with SMTP id 25so5884751ioj.9; Wed, 24 Jan 2018 10:48:51 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:reply-to:in-reply-to:references :from:date:message-id:subject:to:cc; bh=yNk1pS/k2Om3BQp/MLcuH2JM4iOUh+7tPbfgzSWUZHI=; b=HnH5+sUzgWBLxqEdicRNxlZVnNxjEHsHR46/MJVKBP7ad18yyMZoeAkSHThriRchBi Lxlok9i1eUxZSiMPDilmIN0/8/Iqm7yVGxt+JYes/ceslnqplFNQWflbK7Dyda0vM5W+ q50siaAe1p3xrr4UTFrQn66uRD5rcJq93CXZ5b8AdAncDtuo6TfDcPNJ3d4UE64lKgUX nFvYzl99dWilKukNnhWA7/c1YhaaLN+jxbCnAIw18I9iffRWiXWz3bkiTwhXyI3PozoK +RMQ4kykO22eqhFDaAab5vlFM8nkSDbAmriecZRcgnfklpnyi8GP4Bzm0we1yVpFqiU7 Dzig== X-Gm-Message-State: AKwxytcYrr8KAKsz6f+w1wkGf7WNPTVi0NsRu/CCfuwFy0ZvCnWjRWau x8m6AmOWMU++AXxbCzYhkhv1jbYX X-Google-Smtp-Source: AH8x225XtoQFc+9vxXqPefWUtRJbL5XVi7u6qwWT9cI+Ji2HMxPb9T5NUIr8bmGq1PC2mKxmoL7moQ== X-Received: by 10.107.136.201 with SMTP id s70mr9493533ioi.177.1516819724794; Wed, 24 Jan 2018 10:48:44 -0800 (PST) Received: from mail-it0-f49.google.com (mail-it0-f49.google.com. [209.85.214.49]) by smtp.gmail.com with ESMTPSA id t21sm513367ioi.48.2018.01.24.10.48.44 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 24 Jan 2018 10:48:44 -0800 (PST) Received: by mail-it0-f49.google.com with SMTP id q8so6331073itb.2; Wed, 24 Jan 2018 10:48:44 -0800 (PST) X-Received: by 10.36.114.193 with SMTP id x184mr184070itc.71.1516819724288; Wed, 24 Jan 2018 10:48:44 -0800 (PST) MIME-Version: 1.0 Reply-To: cem@freebsd.org Received: by 10.2.95.152 with HTTP; Wed, 24 Jan 2018 10:48:43 -0800 (PST) In-Reply-To: <2aa48cbd-247a-66cd-b486-02ee77ec2e96@selasky.org> References: <201801211542.w0LFgbsp005980@repo.freebsd.org> <51ff8aef-5660-7857-e4d5-12cdc77bc071@FreeBSD.org> <20180124182548.X1063@besplex.bde.org> <1516817048.42536.182.camel@freebsd.org> <2aa48cbd-247a-66cd-b486-02ee77ec2e96@selasky.org> From: Conrad Meyer Date: Wed, 24 Jan 2018 10:48:43 -0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: svn commit: r328218 - in head/sys: amd64/amd64 arm/xscale/ixp425 arm64/arm64 cam cam/ctl compat/ndis dev/aacraid dev/advansys dev/ath dev/beri/virtio dev/bnxt dev/bwn dev/ciss dev/cxgbe/crypto dev/... To: Hans Petter Selasky Cc: src-committers , svn-src-all@freebsd.org, svn-src-head@freebsd.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Jan 2018 18:48:52 -0000 On Wed, Jan 24, 2018 at 10:40 AM, Hans Petter Selasky wrote: > On 01/24/18 19:28, Warner Losh wrote: >> >> Does mallocarray(10 ,1Gb) panic on i386? It does not. It should. > > > Hi, > > If M_WAITOK is specified, then sleep forever and print a message. > Else return NULL ? Depends on the machine. From malloc.9: > If the multiplication of nmemb and size would cause an integer overflow, the mallocarray() function induces a panic. 64-bit arch does not experience overflow and will sleep until 10GB is available. (This is why the caller should do a narrower check.) 32-bit panics, since 10 * 1GB overflows 32-bit size_t (== u_long). Best, Conrad