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 X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D340DC5DF61 for ; Tue, 5 Nov 2019 15:31:03 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 8942F222CD for ; Tue, 5 Nov 2019 15:31:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8942F222CD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2C8E96B0008; Tue, 5 Nov 2019 10:31:03 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 27A746B000A; Tue, 5 Nov 2019 10:31:03 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1B6B46B000C; Tue, 5 Nov 2019 10:31:03 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0146.hostedemail.com [216.40.44.146]) by kanga.kvack.org (Postfix) with ESMTP id 057AC6B0008 for ; Tue, 5 Nov 2019 10:31:03 -0500 (EST) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id BD5888249980 for ; Tue, 5 Nov 2019 15:31:02 +0000 (UTC) X-FDA: 76122611964.06.death72_7d7d0f6fdfc52 X-HE-Tag: death72_7d7d0f6fdfc52 X-Filterd-Recvd-Size: 2636 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf06.hostedemail.com (Postfix) with ESMTP for ; Tue, 5 Nov 2019 15:31:02 +0000 (UTC) Received: from arrakis.emea.arm.com (unknown [46.69.195.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4F879217F5; Tue, 5 Nov 2019 15:30:59 +0000 (UTC) Date: Tue, 5 Nov 2019 15:30:56 +0000 From: Catalin Marinas To: Amir Goldstein Cc: Theodore Tso , fstests , Matthew Wilcox , Michal Hocko , Qian Cai , Andrew Morton , Linus Torvalds , Linux MM , linux-kernel Subject: Re: 5.4-rc1 boot regression with kmemleak enabled Message-ID: <20191105153055.GC22987@arrakis.emea.arm.com> References: <20191105115431.GD26580@mbp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Nov 05, 2019 at 02:33:48PM +0200, Amir Goldstein wrote: > On Tue, Nov 5, 2019 at 1:54 PM Catalin Marinas wrote: > > (sorry if you got this message twice; our SMTP server went bust) > > > > On Tue, Nov 05, 2019 at 09:14:06AM +0200, Amir Goldstein wrote: > > > My kvm-xfstests [1] VM doesn't boot with kmemleak enabled since commit > > > c5665868183f ("mm: kmemleak: use the memory pool for early allocations"). > > > > > > There is no console output when running: > > > > > > $ kvm -boot order=c -net none -machine type=pc,accel=kvm:tcg -cpu host \ > > > -drive file=$ROOTFS,if=virtio,snapshot=on -vga none -nographic \ > > > -smp 2 -m 2048 -serial mon:stdio --kernel $KERNEL \ > > > --append 'root=/dev/vda console=ttyS0,115200' > > > > This was fixed in 5.4-rc4, see commit 2abd839aa7e6 ("kmemleak: Do not > > corrupt the object_list during clean-up"). > > Did not fix my issue. > Still not booting with 5.4-rc6. > Any other suggestions? Can you pass an earlyprintk=ttyS0,115200 (if that's the correct x86 syntax) on the kernel command line? It may print some early messages that would help with debugging. -- Catalin