Path: csiph.com!weretis.net!feeder4.news.weretis.net!news.mixmin.net!aioe.org!gothmog.csi.it!bofh.it!news.nic.it!robomod From: Linus Torvalds Newsgroups: linux.kernel Subject: Re: headsup: random memory corruption on 4.5-rc5 Date: Fri, 04 Mar 2016 23:30:01 +0100 Message-ID: References: X-Original-To: Dave Airlie Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc; bh=3Z4Kw3wD6tLKaK9HkC/rQJKU69omRjVrBoA3i+6rFHM=; b=NRIc1PCOss0Z2SP/Aae1J06oHloa6y90xPxq1EV5KOZLYUT/6siJZJJUtRATn8NEzf 9WgeCDvdDKkWyg2Ob3CJPctPC2sKAqfY85aGep+Af6QKZ+B9j+l5wo0fZpfFd0aWPiZL ItqjGaL/yQdBGhTtms6KYIoeC/StBMsY9bFxYfTMq2+3yHwQOdFJYzpDvx3oNONC1uUO x014RAvXdJ/E5EYzNkoC0q6idBKl7kzRsBOB3a2JaI4d6pexPsdGM39R++KHhffYe3cI pZUg08YD5D9Xc3uY2YMv/ROz+Tdhdt2WB0blmqGQxG4yLzOXW3Yohdi7R1jtroCX6ZN6 1mGg== Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc; bh=3Z4Kw3wD6tLKaK9HkC/rQJKU69omRjVrBoA3i+6rFHM=; b=Ys/O0q7utnwSydFOTTvPeSHFul7PIIhSPaqz8NdoWByMU55uQxRhaRou2vtm7yKq8M 2ogSj7vxDbwlT3fF21/7XdCmdJ7cZBVDx+Dfk1cRhgxTMPCGTJoOS3eGBjpsuz/Zu7qP KbeXZNqhq/3EUL9y9MzaF3tNctGp0f5Yv/LjU= X-Google-Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:date :message-id:subject:from:to:cc; bh=3Z4Kw3wD6tLKaK9HkC/rQJKU69omRjVrBoA3i+6rFHM=; b=NAPuRf5X+qh7o3MHVVe5V+1d4yuTKrIVGEGFKrXuGaKDEQBJtO+oeYBub3QSLMW9AK TZUMGmBGboE+9pKRmrjHLVVK2JHMkSH01dQl7Si5NMZ8eb/LBX2MGUk/Iyz0CyEJEufI qNGXtlyMiea39S+6W7+fIMyhZ+q5bVcNRoIfqH2ZLOu3D3EmkxA3UwPLHKdMYtdMHa6d WUkDPyPc1m3jZoTbgc20F4LQCu3JW+EBjgP7vY50bwxy7dNee3K7ROej2hDdvgNaoXRn DewC2yHC2k85AepUKesVFswFiWfSzFMERzkH7bVsznlhNQg81IXSbUhzHyWkebpQTmJk AXPg== X-Gm-Message-State: AD7BkJKoEE65lJPsfZxilDg1WNbE0MS5i3vrPz5YxhZzMSMfuZ+K9QOvEECnU8/hqp5POKdSSlRpFdzKtw9//A== MIME-Version: 1.0 X-Received: by 10.107.5.2 with SMTP id 2mr10721972iof.89.1457130182213; Fri, 04 Mar 2016 14:23:02 -0800 (PST) X-Google-Sender-Auth: Wuwmq1bHOxD1cnNfnkBA5Oc6SB8 Content-Type: text/plain; charset=UTF-8 Sender: robomod@news.nic.it List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Approved: robomod@news.nic.it Lines: 14 Organization: linux.* mail to news gateway X-Original-Cc: LKML X-Original-Date: Fri, 4 Mar 2016 14:23:02 -0800 X-Original-Message-ID: X-Original-References: X-Original-Sender: linux-kernel-owner@vger.kernel.org Xref: csiph.com linux.kernel:1350643 On Fri, Mar 4, 2016 at 1:44 PM, Dave Airlie wrote: > > ------------[ cut here ]------------ > kernel BUG at mm/slub.c:3625! Yeah, not a lot to go on. That case should probably use VM_BUG_ON_PAGE() to five a little more information, but on the whole it's does look like just major memory corruption. The call trace doesn't really strike me as a likely source of the bug. Enabling slub debugging does seem to be the best idea. Linus