From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752825AbbGOQJf (ORCPT ); Wed, 15 Jul 2015 12:09:35 -0400 Received: from bh-25.webhostbox.net ([208.91.199.152]:48637 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751877AbbGOQJd (ORCPT ); Wed, 15 Jul 2015 12:09:33 -0400 Date: Wed, 15 Jul 2015 09:09:18 -0700 From: Guenter Roeck To: Paul Burton Cc: linux-next@vger.kernel.org, Ralf Baechle , linux-kernel@vger.kernel.org, linux-mips@linux-mips.org Subject: Crash in -next due to 'MIPS: Move FP usage checks into protected_{save, restore}_fp_context' Message-ID: <20150715160918.GA27653@roeck-us.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) 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-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 test for mipsel crashes with next-20150715 as follows. ... Btrfs loaded console [netcon0] enabled netconsole: network logging started Freeing unused kernel memory: 284K (808f9000 - 80940000) Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000008 Bisect points to commit 'MIPS: Move FP usage checks into protected_{save, restore}_fp_context'. Bisect log is as follows. The problem is not seen with bit endian qemu test. Please let me know if there is anything I can do to help debugging this problem. Thanks, Guenter --- # bad: [f4d61b2d73c1e4964ad68df238af5005485469af] Add linux-next specific files for 20150715 # good: [bc0195aad0daa2ad5b0d76cce22b167bc3435590] Linux 4.2-rc2 git bisect start 'HEAD' 'v4.2-rc2' # bad: [897f492ee766d354b949f3838cbfda8978cfd3cd] Merge remote-tracking branch 'crypto/master' git bisect bad 897f492ee766d354b949f3838cbfda8978cfd3cd # bad: [687fe9993e4fbe728113086eb9525360465694e6] Merge remote-tracking branch 'mips/mips-for-linux-next' git bisect bad 687fe9993e4fbe728113086eb9525360465694e6 # good: [a06e5ae4e8d6d5846809e94d0d45afcc5a9eaf35] Merge remote-tracking branch 'omap/for-next' git bisect good a06e5ae4e8d6d5846809e94d0d45afcc5a9eaf35 # good: [badbfaedef0876d3cffb3264512aaec8cc162c61] Merge remote-tracking branch 'tegra/for-next' git bisect good badbfaedef0876d3cffb3264512aaec8cc162c61 # bad: [88841d986cebe1207a47cd7422f5069b2616b194] MIPS: Advertise MSA support via HWCAP when present git bisect bad 88841d986cebe1207a47cd7422f5069b2616b194 # good: [7c1f7b83170bc14a3e461a9b5595fcecf857da70] MIPS: octeon: Replace the homebrewn flow handler git bisect good 7c1f7b83170bc14a3e461a9b5595fcecf857da70 # good: [186a699fdf6f0866ca980bcf5e79f54922fe52c2] MIPS: Introduce accessors for MSA vector registers git bisect good 186a699fdf6f0866ca980bcf5e79f54922fe52c2 # bad: [1793cdaa84ed5c4025a36793f350b07b49555b57] MIPS: Skip odd double FP registers when copying FP32 sigcontext git bisect bad 1793cdaa84ed5c4025a36793f350b07b49555b57 # good: [8a6bb0ab74eaca5f2a4e60f94df2ea5b08cdfd63] MIPS: Simplify EVA FP context handling code git bisect good 8a6bb0ab74eaca5f2a4e60f94df2ea5b08cdfd63 # good: [6f47ebd751531249fe0e2b4d3afdfcbf9f66dbd8] MIPS: Use struct mips_abi offsets to save FP context git bisect good 6f47ebd751531249fe0e2b4d3afdfcbf9f66dbd8 # bad: [fa3156ca734cb65f23df0f844433e75ea1da37f3] MIPS: Move FP usage checks into protected_{save, restore}_fp_context git bisect bad fa3156ca734cb65f23df0f844433e75ea1da37f3 # first bad commit: [fa3156ca734cb65f23df0f844433e75ea1da37f3] MIPS: Move FP usage checks into protected_{save, restore}_fp_context