From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f71.google.com (mail-pg0-f71.google.com [74.125.83.71]) by kanga.kvack.org (Postfix) with ESMTP id A12666B0253 for ; Tue, 17 Jan 2017 19:23:07 -0500 (EST) Received: by mail-pg0-f71.google.com with SMTP id 194so145129428pgd.7 for ; Tue, 17 Jan 2017 16:23:07 -0800 (PST) Received: from osg.samsung.com (ec2-52-27-115-49.us-west-2.compute.amazonaws.com. [52.27.115.49]) by mx.google.com with ESMTP id h82si20962259pfj.218.2017.01.17.16.23.06 for ; Tue, 17 Jan 2017 16:23:06 -0800 (PST) From: Shuah Khan Subject: Linux 4.10-rc2 arm: dmesg flooded with alloc_contig_range: [X, Y) PFNs busy Message-ID: <6c67577e-8b72-c958-40af-2096d8840fbe@osg.samsung.com> Date: Tue, 17 Jan 2017 17:23:03 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton , vbabka@suse.cz, mgorman@techsingularity.net, mhocko@suse.com, hannes@cmpxchg.org, iamjoonsoo.kim@lge.com, izumi.taku@jp.fujitsu.com Cc: LKML , Shuah Khan , linux-mm@kvack.org Hi, dmesg floods with PFNs busy messages. [10119.071455] alloc_contig_range: [bb900, bbc00) PFNs busy [10119.071631] alloc_contig_range: [bba00, bbd00) PFNs busy [10119.071762] alloc_contig_range: [bbb00, bbe00) PFNs busy [10119.071940] alloc_contig_range: [bbc00, bbf00) PFNs busy [10119.072039] alloc_contig_range: [bbd00, bc000) PFNs busy [10119.072188] alloc_contig_range: [bbe00, bc100) PFNs busy [10119.072301] alloc_contig_range: [bbf00, bc200) PFNs busy [10119.072403] alloc_contig_range: [bc000, bc300) PFNs busy [10119.072549] alloc_contig_range: [bc100, bc400) PFNs busy [10119.072584] [drm:exynos_drm_gem_create] *ERROR* failed to allocate buffer. I think this is triggered when drm tries to allocate CMA buffers. I might have seen one or two messages in 4.9, but since 4.10, it just floods dmesg. Is this a known problem? I am seeing this on odroid-xu4 Linux odroid 4.10.0-rc2-00251-ge03c755-dirty #12 SMP PREEMPT Wed Jan 11 23:12:52 UTC 2017 armv7l armv7l armv7l GNU/Linux thanks, -- Shuah -- Shuah Khan Sr. Linux Kernel Developer Open Source Innovation Group Samsung Research America (Silicon Valley) shuahkh@osg.samsung.com -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org