From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753589AbdESQrC (ORCPT ); Fri, 19 May 2017 12:47:02 -0400 Received: from bh-25.webhostbox.net ([208.91.199.152]:56691 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751260AbdESQrA (ORCPT ); Fri, 19 May 2017 12:47:00 -0400 Date: Fri, 19 May 2017 09:46:23 -0700 From: Guenter Roeck To: Michal Hocko Cc: linux-kernel@vger.kernel.org, Pavel Tatashin , Andrew Morton , Stephen Rothwell Subject: Widespread crashes in -next, bisected to 'mm: drop HASH_ADAPT' Message-ID: <20170519164622.GA28873@roeck-us.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) X-Authenticated_sender: guenter@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: authenticated_id: guenter@roeck-us.net X-Authenticated-Sender: bh-25.webhostbox.net: guenter@roeck-us.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, my qemu tests of next-20170519 show the following results: total: 122 pass: 30 fail: 92 I won't bother listing all of the failures; they are available at http://kerneltests.org/builders. I bisected one (openrisc, because it gives me some console output before dying). It points to 'mm: drop HASH_ADAPT' as the culprit. Bisect log is attached. A quick glance suggests that 64 bit kernels pass and 32 bit kernels fail. 32-bit x86 images fail and should provide an easy test case. Guenter --- # bad: [5666af8ae4a18b5ea6758d0c7c42ea765de216d2] Add linux-next specific files for 20170519 # good: [2ea659a9ef488125eb46da6eb571de5eae5c43f6] Linux 4.12-rc1 git bisect start 'HEAD' 'v4.12-rc1' # good: [c7115270d8cc333801b11e541ddbc43e320a88ef] Merge remote-tracking branch 'drm/drm-next' git bisect good c7115270d8cc333801b11e541ddbc43e320a88ef # good: [6bf84ee44e057051577be7edf306dc595b8d3c0f] Merge remote-tracking branch 'tip/auto-latest' git bisect good 6bf84ee44e057051577be7edf306dc595b8d3c0f # good: [8def67a06d65a1b08c87a65a8ef4fd6e71b6745c] Merge remote-tracking branch 'staging/staging-next' git bisect good 8def67a06d65a1b08c87a65a8ef4fd6e71b6745c # good: [0d538a750eaab91fc3f6dffe4c0e7d98d6252b81] Merge remote-tracking branch 'userns/for-next' git bisect good 0d538a750eaab91fc3f6dffe4c0e7d98d6252b81 # good: [eb64959cd8c405de533122dc72b64d6ca197cee1] powerpc/mm/hugetlb: remove follow_huge_addr for powerpc git bisect good eb64959cd8c405de533122dc72b64d6ca197cee1 # bad: [eb520e759caf124ba1c64e277939ff379d0ca8bd] procfs: fdinfo: extend information about epoll target files git bisect bad eb520e759caf124ba1c64e277939ff379d0ca8bd # bad: [45f5e427d6326ca1c44cd6897b9939441063fb96] lib/kstrtox.c: use "unsigned int" more git bisect bad 45f5e427d6326ca1c44cd6897b9939441063fb96 # bad: [d75db247b8f204bfa2e6d2b40afcae74f3b4c7fd] mm: drop NULL return check of pte_offset_map_lock() git bisect bad d75db247b8f204bfa2e6d2b40afcae74f3b4c7fd # good: [d4c9af9111d483efd5f302916639a0e9a626f90f] mm: adaptive hash table scaling git bisect good d4c9af9111d483efd5f302916639a0e9a626f90f # bad: [90d2d8d8960a1b2ed868ce3bfd91e2ac8d4ff9aa] mm/hugetlb: clean up ARCH_HAS_GIGANTIC_PAGE git bisect bad 90d2d8d8960a1b2ed868ce3bfd91e2ac8d4ff9aa # bad: [67d0687224a93ef2adae7a2ed10f25b275f2ee91] mm: drop HASH_ADAPT git bisect bad 67d0687224a93ef2adae7a2ed10f25b275f2ee91 # first bad commit: [67d0687224a93ef2adae7a2ed10f25b275f2ee91] mm: drop HASH_ADAPT