From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758950AbcIPTMX (ORCPT ); Fri, 16 Sep 2016 15:12:23 -0400 Received: from bh-25.webhostbox.net ([208.91.199.152]:37705 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753513AbcIPTMV (ORCPT ); Fri, 16 Sep 2016 15:12:21 -0400 Date: Fri, 16 Sep 2016 12:12:18 -0700 From: Guenter Roeck To: linux-kernel@vger.kernel.org Cc: Al Viro , Yoshinori Sato , linux-sh@vger.kernel.org, Rich Felker Subject: Runtime failure running sh:qemu in -next due to 'sh: fix copy_from_user()' Message-ID: <20160916191218.GA12104@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-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, I see the following runtime failure when running a 'sh' image with qemu in -next. [ ... ] sd 0:0:0:0: [sda] Attached SCSI disk EXT2-fs (sda): warning: mounting unchecked fs, running e2fsck is recommended VFS: Mounted root (ext2 filesystem) on device 8:0. Freeing unused kernel memory: 124K (8c48a000 - 8c4a9000) This architecture does not have kernel memory protection. random: fast init done Starting logging: OK usb 1-1: new full-speed USB device number 2 using sm501-usb Initializing random number generator... done. Starting network... ip: OVERRUN: Invalid argument ip: OVERRUN: Bad address ip: OVERRUN: Bad address ip: OVERRUN: Bad address ip: OVERRUN: Bad address [repeats until the test aborts] Bisect points to commit 6e050503a150 ("sh: fix copy_from_user()"). Bisect log is attached. Guenter # bad: [c96ee5192be2bd160b209e063647c0a504247805] Add linux-next specific files for 20160915 # good: [9395452b4aab7bc2475ef8935b4a4fb99d778d70] Linux 4.8-rc6 git bisect start 'HEAD' 'v4.8-rc6' # bad: [b9382cef0c0edb556ce9914fef0c3ccc3288fe93] Merge remote-tracking branch 'crypto/master' git bisect bad b9382cef0c0edb556ce9914fef0c3ccc3288fe93 # bad: [c2c9f3960657219312f95baa1f140f3e0f257ebf] Merge branch 'dmi/master' git bisect bad c2c9f3960657219312f95baa1f140f3e0f257ebf # bad: [d3b5a0406cf8b7f5c655639c1eadbbc65ba3a56c] Merge remote-tracking branch 'arm-soc/for-next' git bisect bad d3b5a0406cf8b7f5c655639c1eadbbc65ba3a56c # good: [cd42d7672665ef51ae895631ec79ba9b4801cc85] Merge branch 'next/dt64' into for-next git bisect good cd42d7672665ef51ae895631ec79ba9b4801cc85 # bad: [84b017489a6a09ffc394efe637346b598cef68a5] Merge remote-tracking branch 'input-current/for-linus' git bisect bad 84b017489a6a09ffc394efe637346b598cef68a5 # good: [440f895aa97f81a2bdc02993da5360a1f6da2fb5] drivers: net: phy: xgene: Fix 'remove' function git bisect good 440f895aa97f81a2bdc02993da5360a1f6da2fb5 # good: [b8f26e880c8166604e0da741eccd9fe6d8e1b9fb] Merge tag 'for-linus-4.8b-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip git bisect good b8f26e880c8166604e0da741eccd9fe6d8e1b9fb # bad: [77e5bdf9f7b2d20939c8d807f3e68778d6e1557a] Merge branch 'uaccess-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs git bisect bad 77e5bdf9f7b2d20939c8d807f3e68778d6e1557a # good: [2e29f50ad5e23db37dde9be71410d95d50241ecd] nios2: fix __get_user() git bisect good 2e29f50ad5e23db37dde9be71410d95d50241ecd # good: [c6852389228df9fb3067f94f3b651de2a7921b36] sh64: failing __get_user() should zero git bisect good c6852389228df9fb3067f94f3b651de2a7921b36 # bad: [c90a3bc5061d57e7931a9b7ad14784e1a0ed497d] m32r: fix __get_user() git bisect bad c90a3bc5061d57e7931a9b7ad14784e1a0ed497d # bad: [917400cecb4b52b5cde5417348322bb9c8272fa6] sparc32: fix copy_from_user() git bisect bad 917400cecb4b52b5cde5417348322bb9c8272fa6 # bad: [6e050503a150b2126620c1a1e9b3a368fcd51eac] sh: fix copy_from_user() git bisect bad 6e050503a150b2126620c1a1e9b3a368fcd51eac # first bad commit: [6e050503a150b2126620c1a1e9b3a368fcd51eac] sh: fix copy_from_user()