From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22CCEC43331 for ; Thu, 2 Apr 2020 19:27:13 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 98C67206F8 for ; Thu, 2 Apr 2020 19:27:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="kpG4tj3j" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 98C67206F8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 0069E8E0008; Thu, 2 Apr 2020 15:27:12 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EF9F98E0007; Thu, 2 Apr 2020 15:27:11 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E0E888E0008; Thu, 2 Apr 2020 15:27:11 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0201.hostedemail.com [216.40.44.201]) by kanga.kvack.org (Postfix) with ESMTP id C3CC28E0007 for ; Thu, 2 Apr 2020 15:27:11 -0400 (EDT) Received: from smtpin04.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 7CD232C89 for ; Thu, 2 Apr 2020 19:27:11 +0000 (UTC) X-FDA: 76663898262.04.cough56_5bda2337d052c X-HE-Tag: cough56_5bda2337d052c X-Filterd-Recvd-Size: 9194 Received: from mail-lj1-f193.google.com (mail-lj1-f193.google.com [209.85.208.193]) by imf44.hostedemail.com (Postfix) with ESMTP for ; Thu, 2 Apr 2020 19:27:11 +0000 (UTC) Received: by mail-lj1-f193.google.com with SMTP id r24so4511669ljd.4 for ; Thu, 02 Apr 2020 12:27:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=vb5tL+W1ofpBV7FsB437iOfsA6eloWUcZokuYoXnsKg=; b=kpG4tj3j61ZFadQA6O+YOphdJcn7p896+/C1o9Y4CaNmTgp/OepMFSzIqW0h062CJx 5y6qkYMg40lX8/ad3OCgIsdOdV6vY6Qa9R8/tbQoG/TdnUqCnqVXxaDHpQJgMuxuGECB zGm6qmmzzhQpdAEkn6SlReZlGSx5uEt6A+6iVSo5XIhpbUUmrOjl/8zzSY8CbCBj4wro lJeCLNjoYbfwRsvNo5t52cgUHSjbyUbTay39n8FO7Vkd6Jv+ovN+5LDNLQfD3K5PZJai TuXyAS/lPwlovZFkVrThRy5eZGVfCtN5DVxHgiD48fkkQ8h3YAj+xHlw5zGVdmOC1aRP Wpdg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=vb5tL+W1ofpBV7FsB437iOfsA6eloWUcZokuYoXnsKg=; b=KlyPawKP/fWH6UR6Nodd/0SC9LMYP6jaEFS17xAsAbV2zVbjGjsjXmDEP3hwZDtxs5 xO2pMFR9UfCT+RUb925jVY6iyueB8k/JjR9PEToofu7k++OwJoirt/BV8SWmKVlzaey1 +W1mxy3fAFNExPc/fg3olTTtZhGFQ5Vzt2HhcSaI9XPYyUIOU9AifbkSJHgUmrbAbZsa vBp20m8YF4sHUFCC9cxdlCxaTUjVJIIyyM/XUIyeq4fy5YVfF+dQt96tdPE+4J6UczGA M0+tMTpcvxccYbbki+I4pm8jka95QPShHDVMHvkH5ZmW0Hkd2oZFnJEzaMjo3LezX9te 8v3Q== X-Gm-Message-State: AGi0PubKLbkWqE0HGApC1jI4sxZ8/R+Ghc6uxeA1kXDK8qjaujSSaOLB zjzuC4QmGSyXmqda4+Qfc8QPkmEiD+S+9mpZZuqzgw== X-Google-Smtp-Source: APiQypI3DuoOpgpYgB2M6ixoczedRo87gp3LKeUyHza3n/ojjx6uN5eUZm10RFfLVnYEaouhXZ0Q0Gwyh+DUYNU5I9k= X-Received: by 2002:a2e:3c08:: with SMTP id j8mr2946034lja.243.1585855629252; Thu, 02 Apr 2020 12:27:09 -0700 (PDT) MIME-Version: 1.0 References: <20200402133849.mmkvekzx37kw4nsj@box> In-Reply-To: <20200402133849.mmkvekzx37kw4nsj@box> From: Naresh Kamboju Date: Fri, 3 Apr 2020 00:56:57 +0530 Message-ID: Subject: Re: mm/mremap.c : WARNING: at mm/mremap.c:211 move_page_tables+0x5b0/0x5d0 To: "Kirill A. Shutemov" Cc: Andrew Morton , linux- stable , linux-mm , "Joel Fernandes (Google)" , William Kucharski , Julia Lawall , Michal Hocko , Will Deacon , Greg Kroah-Hartman , lkft-triage@lists.linaro.org, Mike Kravetz , LTP List Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, 2 Apr 2020 at 19:08, Kirill A. Shutemov wrote: > > On Thu, Apr 02, 2020 at 04:49:02PM +0530, Naresh Kamboju wrote: > > While running LTP mm thp01 test case on i386 kernel running on x86_64 device > > the following kernel warning was noticed multiple times. > > > > Interesting. I suspect it's related to 2-level page tables in this > configuration. But I cannot immediately see how. > > Could you test if enabling HIGHMEM64 fixes the issue? CONFIG_HIGHMEM64G=y > > Below is patch that prints some additional info: Applied your patch and reproduced the problem, The boot log show this warning, [ 0.261879] ************************************************************ [ 0.261880] ** WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! ** [ 0.261881] ** ** [ 0.261881] ** You are using 32-bit PTI on a 64-bit PCID-capable CPU. ** [ 0.261882] ** Your performance will increase dramatically if you ** [ 0.261882] ** switch to a 64-bit kernel! ** [ 0.261883] ** ** [ 0.261884] ** WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! ** [ 0.261884] ************************************************************ ... Reproducing steps: ------------------------ cd /opt/ltp ./runltp -f mm [ 734.485672] ------------[ cut here ]------------ [ 734.490306] WARNING: CPU: 3 PID: 32321 at mm/mremap.c:212 move_page_tables+0x7c3/0x830 [ 734.498212] Modules linked in: x86_pkg_temp_thermal [ 734.503084] CPU: 3 PID: 32321 Comm: true Tainted: G W 5.6.2-rc1+ #14 [ 734.510729] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.2 05/23/2018 [ 734.518110] EIP: move_page_tables+0x7c3/0x830 [ 734.522463] Code: 0c eb a7 8d 45 d8 83 4d e8 01 e8 c8 e6 01 00 e9 be f8 ff ff 8d 45 d8 31 d2 e8 59 e8 01 00 e9 a5 fc ff ff 31 db e9 81 fc ff ff <0f> 0b 8b 45 b8 e8 43 e0 fe ff ff 75 b0 ff 75 08 ff 75 cc 68 e4 50 [ 734.541200] EAX: eb5f1fe8 EBX: 00400000 ECX: 2b5f1001 EDX: 2b5f1000 [ 734.547456] ESI: ea5d6010 EDI: eb5f1ff0 EBP: da381e14 ESP: da381d84 [ 734.553714] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010202 [ 734.560492] CR0: 80050033 CR2: b7d11f50 CR3: 2a5d6000 CR4: 003406f0 [ 734.566748] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 734.573006] DR6: fffe0ff0 DR7: 00000400 [ 734.576835] Call Trace: [ 734.579282] setup_arg_pages+0x22c/0x350 [ 734.583207] ? strlcpy+0x33/0x50 [ 734.586459] load_elf_binary+0x352/0x1010 [ 734.590468] ? selinux_inode_permission+0xe5/0x1f0 [ 734.595254] search_binary_handler+0x77/0x1a0 [ 734.599614] __do_execve_file+0x5aa/0x710 [ 734.603615] sys_execve+0x21/0x30 [ 734.606926] do_fast_syscall_32+0x75/0x260 [ 734.611019] entry_SYSENTER_32+0xa5/0xf8 [ 734.614942] EIP: 0xb7ef6c11 [ 734.617735] Code: Bad RIP value. [ 734.620956] EAX: ffffffda EBX: bfb8dcb0 ECX: 08069420 EDX: bfb8df14 [ 734.627238] ESI: 080599d4 EDI: bfb8dcb9 EBP: bfb8dd58 ESP: bfb8dc88 [ 734.633499] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000296 [ 734.640276] ---[ end trace e625d4d55b8380f3 ]--- [ 734.644934] vma dbc4c180 start bf801000 end c0000000 [ 734.644934] next 00000000 prev 00000000 mm d0d75d40 [ 734.644934] prot 25 anon_vma d0dfddc8 vm_ops 00000000 [ 734.644934] pgoff bfa01 file 00000000 private_data 00000000 [ 734.644934] flags: 0x118173(read|write|mayread|maywrite|mayexec|growsdown|seqread|randread|account) [ 734.674346] old_addr: 0xbfc00000, new_addr: 0xbfa00000, old_end: 0xc0000000 [ 734.681322] old_pmd: 0x77923067 [ 734.681322] new_pmd: 0x7796d067 [ 734.684510] ------------[ cut here ]------------ [ 734.692295] WARNING: CPU: 2 PID: 32321 at mm/mremap.c:212 move_page_tables+0x7c3/0x830 [ 734.700241] Modules linked in: x86_pkg_temp_thermal [ 734.705128] CPU: 2 PID: 32321 Comm: true Tainted: G W 5.6.2-rc1+ #14 [ 734.712770] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.2 05/23/2018 [ 734.720156] EIP: move_page_tables+0x7c3/0x830 [ 734.724506] Code: 0c eb a7 8d 45 d8 83 4d e8 01 e8 c8 e6 01 00 e9 be f8 ff ff 8d 45 d8 31 d2 e8 59 e8 01 00 e9 a5 fc ff ff 31 db e9 81 fc ff ff <0f> 0b 8b 45 b8 e8 43 e0 fe ff ff 75 b0 ff 75 08 ff 75 cc 68 e4 50 [ 734.743256] EAX: eb5f1ff0 EBX: 00200000 ECX: 2b5f1001 EDX: 2b5f1000 [ 734.749517] ESI: ea5d6010 EDI: eb5f1ff8 EBP: da381e14 ESP: da381d84 [ 734.755776] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010202 [ 734.762553] CR0: 80050033 CR2: b7f1f4e0 CR3: 2a5d6000 CR4: 003406f0 [ 734.768808] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 734.775067] DR6: fffe0ff0 DR7: 00000400 [ 734.778898] Call Trace: [ 734.781344] setup_arg_pages+0x22c/0x350 [ 734.785269] ? strlcpy+0x33/0x50 [ 734.788499] load_elf_binary+0x352/0x1010 [ 734.792503] ? selinux_inode_permission+0xe5/0x1f0 [ 734.797287] search_binary_handler+0x77/0x1a0 [ 734.801639] __do_execve_file+0x5aa/0x710 [ 734.805642] sys_execve+0x21/0x30 [ 734.808953] do_fast_syscall_32+0x75/0x260 [ 734.813045] entry_SYSENTER_32+0xa5/0xf8 [ 734.816959] EIP: 0xb7ef6c11 [ 734.819752] Code: Bad RIP value. [ 734.822976] EAX: ffffffda EBX: bfb8dcb0 ECX: 08069420 EDX: bfb8df14 [ 734.829261] ESI: 080599d4 EDI: bfb8dcb9 EBP: bfb8dd58 ESP: bfb8dc88 [ 734.835525] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000296 [ 734.842302] ---[ end trace e625d4d55b8380f4 ]--- [ 734.846940] vma dbc4c180 start bf801000 end c0000000 [ 734.846940] next 00000000 prev 00000000 mm d0d75d40 [ 734.846940] prot 25 anon_vma d0dfddc8 vm_ops 00000000 [ 734.846940] pgoff bfa01 file 00000000 private_data 00000000 [ 734.846940] flags: 0x118173(read|write|mayread|maywrite|mayexec|growsdown|seqread|randread|account) [ 734.876355] old_addr: 0xbfe00000, new_addr: 0xbfc00000, old_end: 0xc0000000 [ 734.883316] old_pmd: 0x77a08067 Full test log, https://lkft.validation.linaro.org/scheduler/job/1334357#L478 - Naresh