From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753533AbdJaPJz (ORCPT ); Tue, 31 Oct 2017 11:09:55 -0400 Received: from mail-co1nam03on0059.outbound.protection.outlook.com ([104.47.40.59]:27184 "EHLO NAM03-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751952AbdJaPJw (ORCPT ); Tue, 31 Oct 2017 11:09:52 -0400 Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Thomas.Lendacky@amd.com; Subject: Re: 67bb8e999e ("x86/mm: Disable various instrumentations of .."): BUG: -1 unexpected failures (out of 262) - debugging disabled! | To: kernel test robot Cc: LKP , linux-kernel@vger.kernel.org, Borislav Petkov , Ingo Molnar , wfg@linux.intel.com References: <59f682b7.uRWV2F+do1GSCh6K%fengguang.wu@intel.com> From: Tom Lendacky Message-ID: <452160a8-9a8a-574b-aaed-aa748b50e4e1@amd.com> Date: Tue, 31 Oct 2017 10:09:44 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <59f682b7.uRWV2F+do1GSCh6K%fengguang.wu@intel.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [165.204.78.1] X-ClientProxiedBy: MWHPR13CA0017.namprd13.prod.outlook.com (10.169.208.27) To DM5PR12MB1145.namprd12.prod.outlook.com (10.168.236.140) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: ca3fd2a9-3b8b-4b55-a0c8-08d520716eb3 X-MS-Office365-Filtering-HT: Tenant X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:(22001)(4534020)(4602075)(48565401081)(2017052603199);SRVR:DM5PR12MB1145; X-Microsoft-Exchange-Diagnostics: 1;DM5PR12MB1145;3:ytILECe1cmrSR09J2Res+klLi0OaysIL51xkMCNIUmkXuSHaxrZnyC6cVwOh1FCDt0b2f1xI5oJsdHzPy/ceOoq3Cf3tGp4AYEY9ZQlZ4bWypRMhTIB9loipi/2YepWWNBrfVwk7XDAJo9ad6WkF5y3oFG2XJAkZl6PAjG0CjFjo8ePqB5AA0aC6yuLAq2dA3S7s/O0wQ7B5Hj9hq7CKp37C5UNpw3MJdKe+HZb125kuE+/IaZRjeUW3TJwwdXgd;25:2StYiT6A+PnHwB84hEHOUdFPLwZrCeyme1+a4LQfziXaGDlif6XA+hLx0Jn0jdJT6uHMpV7w4BsNl6J9eK1/ZPhKP771CajBPNAYIwXNCEVKgIsMwwJUii56NzDPTIxNe/yfI4SjxaCqWxUB1uq7WwDcxz11XPOPz0yh7n1thNKxswlnc+n7bPyxS5RPZc0dHS8rwKI5juVbdw19rCvfSxCBuVbQEcJDGYkJoJdYFdQUE5nhKngGrmfGCE/cFN+HhDB24hYyPAB5cFOZkOprKZtynIy2MNDDHbUNKJ+n0Va3P4+sD58bTcfYjvU5FGOo9nyk+O4fG+VOeJ80A93QOQ==;31:jAgzz2MhfRygqL7M/x1Nm/CoAgXDBf7Xh3+91KpnTOrb/4LzFU9zRAYUEwgiFhh+Ggj2uMR+CGbdGRpqIGoxRZ+eCMbMA19zb3g+n9pNWUB2CUw+NR/gJ6HdlEd8zGTCm/6/Iy2NPEHv1maS8HwGLn97v2a3Wwy6Rn9gBEZNHUpemILHr330MXg9sBE7LPp2SGu+55Rta50pMY4wM/XjjMvcdXqJFHWcEpKCayyBOsc= X-MS-TrafficTypeDiagnostic: DM5PR12MB1145: X-Microsoft-Exchange-Diagnostics: 1;DM5PR12MB1145;20: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;4:k1ctfdISet+oHn4pjMRjENrc4kj9cYCCK7wai53pfNlSgZVgTxmZXgpOTdvFpyZ70fWv2u37fqn3ZHk2CnG4NP3MzjInCYopI2JE/RFuUmHwLgc6jY7eQFIJ1TfcNLPrqfoam4ryD7AuLIK5qHwA9Xz/9hwqQ+2JFtoUWFJtmerJc3qaqy6+kStnBq5mqvqnJNO9hogop+fz5itZmlVlB2AAIZSuMuLn/593gyIta3DkHcfmKGSaVgK4JB1RUjfEDkRltWPh7t863rBRZ+ZWzbdnQiTW9p//JMiOR+iioNubO/MY50o01zDRt3b+6wyiYn8IGGykABwee7L6TXxT8XudUNh7W3IeeL9Wcvdyg0Ulc6sAKflHQcC0uQgyOYsS4KZjM80w+/tvsdPR5aebImAwP4UO9I6HkQF0tljrIkU= X-Exchange-Antispam-Report-Test: UriScan:(767451399110)(162533806227266)(42068640409301)(84791874153150); 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The config has KCOV and FUNCTION_TRACER/STACK_TRACER enabled which causes issues with the early boot code in mm/mem_encrypt.c. If there is an issue that is being hidden by these config options, then performing a bisect without those settings may help identify the real issue. Thanks, Tom > x86/mm: Disable various instrumentations of mm/mem_encrypt.c and mm/tlb.c > > Some routines in mem_encrypt.c are called very early in the boot process, > e.g. sme_enable(). When CONFIG_KCOV=y is defined the resulting code added > to sme_enable() (and others) for KCOV instrumentation results in a kernel > crash. Disable the KCOV instrumentation for mem_encrypt.c by adding > KCOV_INSTRUMENT_mem_encrypt.o := n to arch/x86/mm/Makefile. > > In order to avoid other possible early boot issues, model mem_encrypt.c > after head64.c in regards to tools. In addition to disabling KCOV as > stated above and a previous patch that disables branch profiling, also > remove the "-pg" CFLAG if CONFIG_FUNCTION_TRACER is enabled and set > KASAN_SANITIZE to "n", each of which are done on a file basis. > > Reported-by: kernel test robot > Signed-off-by: Tom Lendacky > Reviewed-by: Borislav Petkov > Cc: Borislav Petkov > Cc: Linus Torvalds > Cc: Peter Zijlstra > Cc: Thomas Gleixner > Link: http://lkml.kernel.org/r/20171010194504.18887.38053.stgit@tlendack-t1.amdoffice.net > Signed-off-by: Ingo Molnar > > ab7ff471aa x86/hyperv: Fix hypercalls with extended CPU ranges for TLB flushing > 67bb8e999e x86/mm: Disable various instrumentations of mm/mem_encrypt.c and mm/tlb.c > 19e12196da Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net > 36ef71cae3 Add linux-next specific files for 20171018 > +--------------------------------------------------------------------------------------+------------+------------+------------+---------------+ > | | ab7ff471aa | 67bb8e999e | 19e12196da | next-20171018 | > +--------------------------------------------------------------------------------------+------------+------------+------------+---------------+ > | boot_successes | 3 | 0 | 2 | 10 | > | boot_failures | 761 | 42 | 201 | 77 | > | BUG:kernel_reboot-without-warning_in_early-boot_stage,last_printk:Booting_the_kernel | 760 | | | | > | BUG:kernel_reboot-without-warning_in_test_stage | 1 | | | | > | BUG:-#unexpected_failures(out_of#)-debugging_disabled!| | 0 | 42 | | | > | BUG:kernel_hang_in_test_stage | 0 | 42 | 200 | 77 | > | WARNING:at_kernel/events/core.c:#perf_swevent_add | 0 | 1 | 10 | 1 | > +--------------------------------------------------------------------------------------+------------+------------+------------+---------------+ > > [ 0.003333] context:failed| ok | ok | > [ 0.003333] try:failed| ok |failed| > [ 0.003333] block:failed| ok |failed| > [ 0.003333] spinlock:failed| ok |failed| > [ 0.003333] ----------------------------------------------------------------- > [ 0.003333] BUG: -1 unexpected failures (out of 262) - debugging disabled! | > [ 0.003333] ----------------------------------------------------------------- > [ 0.003333] ODEBUG: selftest passed > [ 0.003333] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns > [ 0.003333] hpet clockevent registered > [ 0.003345] tsc: Detected 2926.328 MHz processor > > # HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD > git bisect start bb176f67090ca54869fc1262c913aa69d2ede070 v4.13 -- > git bisect good 820bf5c419e4b85298e5c3001bd1b5be46d60765 # 21:42 G 38 0 6 6 Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi > git bisect good 9c0c1adab6024ab7222333ead95c57ca60f39f6f # 21:53 G 38 0 38 40 Merge tag 'drm-fixes-for-v4.14-rc4' of git://people.freedesktop.org/~airlied/linux > git bisect good 9aa0d2dde6ebd14e9d16e28081a24721d5b41cc8 # 22:29 G 38 0 38 38 Merge tag 'drm-fixes-for-v4.14-rc5' of git://people.freedesktop.org/~airlied/linux > git bisect bad 27fdb35fe99011d86bcc54f62fe84712c53f4d05 # 23:11 B 6 3 6 7 doc: Fix various RCU docbook comment-header problems > git bisect bad 33d930e59a98fa10a0db9f56c7fa2f21a4aef9b9 # 23:12 B 0 1 15 1 Linux 4.14-rc5 > git bisect good 7b764cedcb1a04e795795dd0fa38570467583be3 # 23:33 G 35 0 33 33 Merge branch 'ras-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip > git bisect bad 7a23c5abb930cefcef85df6dc0c8fb3e8961980c # 00:08 B 8 5 8 8 Merge tag 'dmaengine-fix-4.14-rc5' of git://git.infradead.org/users/vkoul/slave-dma > git bisect good a339b351304d5e6b02c7cf8eed895d181e64bce0 # 00:31 G 38 0 10 13 Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip > git bisect bad e7a36a6ec9cf1b60273e48ee980b8920f333bd4d # 01:06 B 8 5 8 9 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip > git bisect good d4a2d031dd42f9594107d317e2a9a0c6d73ad46b # 01:30 G 36 0 26 28 x86/unwind: Disable unwinder warnings on 32-bit > git bisect bad 67bb8e999e0aeac285d22f0e53c856b9df5282c6 # 02:05 B 12 1 12 12 x86/mm: Disable various instrumentations of mm/mem_encrypt.c and mm/tlb.c > git bisect good 60d73a7c96601434dfdb56d5b9167ff3b850d8d7 # 03:04 G 195 0 195 195 x86/hyperv: Don't use percpu areas for pcpu_flush/pcpu_flush_ex structures > git bisect good ab7ff471aa5db670197070760f022622793da7e5 # 03:23 G 188 0 188 190 x86/hyperv: Fix hypercalls with extended CPU ranges for TLB flushing > # first bad commit: [67bb8e999e0aeac285d22f0e53c856b9df5282c6] x86/mm: Disable various instrumentations of mm/mem_encrypt.c and mm/tlb.c > git bisect good ab7ff471aa5db670197070760f022622793da7e5 # 03:55 G 561 0 560 750 x86/hyperv: Fix hypercalls with extended CPU ranges for TLB flushing > # extra tests with CONFIG_DEBUG_INFO_REDUCED > git bisect bad 67bb8e999e0aeac285d22f0e53c856b9df5282c6 # 04:40 B 26 19 26 26 x86/mm: Disable various instrumentations of mm/mem_encrypt.c and mm/tlb.c > # extra tests on HEAD of linux-devel/devel-hourly-2017102915 > git bisect bad 75c176ba09dee0b693e5f63442b2c96315799cc1 # 04:40 B 0 2 28 10 0day head guard for 'devel-hourly-2017102915' > # extra tests on tree/branch linus/master > git bisect bad 19e12196da601f7b80b5639adbcecf60fae13389 # 06:25 B 10 1 10 16 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net > # extra tests with first bad commit reverted > git bisect good 191d249fb18624fb43bf27b4105b081db434d721 # 08:20 G 187 0 187 187 Revert "x86/mm: Disable various instrumentations of mm/mem_encrypt.c and mm/tlb.c" > # extra tests on tree/branch linux-next/master > git bisect bad 36ef71cae353f88fd6e095e2aaa3e5953af1685d # 09:27 B 28 1 28 28 Add linux-next specific files for 20171018 > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/lkp Intel Corporation >