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=-0.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 05CB6CA9EA0 for ; Fri, 25 Oct 2019 13:46:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AFB412084C for ; Fri, 25 Oct 2019 13:45:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="Aurd4Qyf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2504819AbfJYNp6 (ORCPT ); Fri, 25 Oct 2019 09:45:58 -0400 Received: from mout.gmx.net ([212.227.17.20]:54003 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726589AbfJYNp6 (ORCPT ); Fri, 25 Oct 2019 09:45:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1572011140; bh=/HsTi1dztkO8Q8vr9S/zWc9EDaATqPDR1thsyNEi6sw=; h=X-UI-Sender-Class:Subject:From:Reply-To:To:Cc:Date:In-Reply-To: References; b=Aurd4QyfvbFkOd6PGzNeayblqDPrWEYfBjsz9hQsQOfpZ32A02YfnbQ34p3yU6LF4 iRUnAwO5HyPJAGelhcuL4pVmOZFuzqrUaYWb+nZ+jhRaVHqLkILPbZh2Bc6KhwT6Li 0AkKOe2cU0pSz5pT/MEEXyPr5nTUomd/csxunmmY= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from bear.fritz.box ([80.128.101.49]) by mail.gmx.com (mrgmx105 [212.227.17.168]) with ESMTPSA (Nemesis) id 1N63VY-1hv8Iu0Ry4-016Pz0; Fri, 25 Oct 2019 15:45:40 +0200 Message-ID: <707b72c6dac76c534dcce60830fa300c44f53404.camel@gmx.de> Subject: Re: mlockall(MCL_CURRENT) blocking infinitely From: Robert Stupp Reply-To: snazy@snazy.de To: Michal Hocko , snazy@snazy.de Cc: Randy Dunlap , linux-kernel@vger.kernel.org, Linux MM , Andrew Morton , "Potyra, Stefan" Date: Fri, 25 Oct 2019 15:45:37 +0200 In-Reply-To: <20191025132700.GJ17610@dhcp22.suse.cz> References: <4576b336-66e6-e2bb-cd6a-51300ed74ab8@snazy.de> <20191025092143.GE658@dhcp22.suse.cz> <70393308155182714dcb7485fdd6025c1fa59421.camel@gmx.de> <20191025114633.GE17610@dhcp22.suse.cz> <20191025120505.GG17610@dhcp22.suse.cz> <20191025121104.GH17610@dhcp22.suse.cz> <20191025132700.GJ17610@dhcp22.suse.cz> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.34.1-2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:6oBhnmUVyPcXLYH4pMnK/nGPDOJy4FT00tTh+gkgvhoLdCF3EzJ 19cw+0holvjEkt4ggmUjVV1v2UD5Hu0RaaOHj8gRXpL6c5bw1W1RtwvJj5WIWlY6iZAug87 JSw/tTPO6zCFDpvu8ddTSIp34hPjTxenQc8/iGmWAk+btNy0RskmDqZ0poBBbw3f2RNvPPu kBKFqotedj2PGudl/rE1w== X-UI-Out-Filterresults: notjunk:1;V03:K0:thLs0UVyfHE=:pahLy/i7bL5/JTwIjVgOPf 5vm8R23ZVUbYnYSGZ0u6gu2OyxKP/BlaPJ2AJ3V1fxlcxig/uI+/CfPglheQRGh77Su1C38JO oGeLoNarlCbzgtF7UqZ87EPxKtXlsfMeuz93spksdgouAH4rGIhoKku9Jazd8tKj3bqTKC/Fl P6J6hPnHGCoyQHNoIY9yUM/j94SAFyxwFOi14Hj6tkOx0yapgLa17SmxEJ7tAM3rLpzHm6YZa nJKlaFAMEJJqzUPCz3FtNHoPmuPZMdp3EdmgNHReKlkOQaw+X5j07SAV5vtO9MSkZkaFstz4X SC7VMnopCICF/BC5GiG7NN2Zoo51v9jqoQb2rIndZp4z3jibRYabviEvmdCCNb989V7AMTN51 WezeIaPK0fWjiu7rhpWNmo2efkq3fZlorDW0SBIb5LyUnTcYDc+/sjCAJ9WFXp0SlSXIywnCt LkgB3KqGBVWpWH1HYELq9rt8KkkQ1qNaO7eXC0lk7Q714xpuh5fNKG1lhRzLLj0rcQmV4L8/p XvqrcFjeDOubufMMaJiTSVmSXDHNJebhnyEbEB7YFtL1RruNvl5EH51XzoNcbhBODdYu7MDbN TOIgsuNF1t1DPpIinqWy8DjqvyZhw/3kZvXZgYUbf63UKbPhO9QZ6purnL8TBvUPbBpvRq9V0 umVAlCHIH7jTcpmoFflzP6VjtLpNRoAIjI6q1L9AGp7RYukBQGKIZoYBHXp+3zVNQkCWEygVi tT2xLFK0h3ecD7rsPGNgh21Wu1LAx4MU84tKkRVXVwoGRm+DnVFPGS4Vkf+BT7ejwRA8KhB4P h7W9/NlmszcMgtWByqpBvcq/Y+Uj6QXaIkkm660NFP719GEMI8Q0jmEyyjtgI+zwwsu+4khkd fNjAMMLlPgGANVs6omWPjuNgfdnTbVWrt6cRS4hYuPTO4pPylk13nBAaSYuG+wR8zzjYDLxpc aGL+LOglNbr4Ca0TNYv0z9YFY56TTtUZwBuD8KdMhbESc0HRPTU9jT8M/PnO7D/8VTThltBpE hmguAhccQj03QfTSAmV50uEX4ArrnjUJWNqgRO0htZSbaatGEDa39jtzJYTE6Viip3PoRa8Yh /mfukXyJzT4edH6OdIbve6JVgfBi0mBnP0GeXcrcQ1X1N/O5eWiOuGIpatg5n6qqSREYJ3A80 TjBRdA3D1o+N7H7VPit0u7nXPhJZEqCWNSHs8fEUDkteJ7q0Ioo7K8iyvSyPiLirFHvOEdQ3Q Pf2pjUSsR9hEeU10+rqKP+wgGp6QCDKNz+G9XRw== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2019-10-25 at 15:27 +0200, Michal Hocko wrote: > On Fri 25-10-19 15:10:39, Robert Stupp wrote: > [...] > > cat /proc/$(pidof test)/smaps > > Nothing really unusual that would jump at me except for > > 7f8be90ed000-7f8be9265000 r-xp 00025000 103:02 > > 44307431 /lib/x86_64-linux-gnu/libc-2.30.so > > Size: 1504 kB > > KernelPageSize: 4 kB > > MMUPageSize: 4 kB > > Rss: 832 kB > > Pss: 5 kB > > Shared_Clean: 832 kB > > Shared_Dirty: 0 kB > > Private_Clean: 0 kB > > Private_Dirty: 0 kB > > Referenced: 832 kB > > Anonymous: 0 kB > > LazyFree: 0 kB > > AnonHugePages: 0 kB > > ShmemPmdMapped: 0 kB > > Shared_Hugetlb: 0 kB > > Private_Hugetlb: 0 kB > > Swap: 0 kB > > SwapPss: 0 kB > > Locked: 5 kB > > Huh, 5kB, is this really the case or some copy&paste error? > How can we end up with !pagesize multiple here? > > > THPeligible: 0 > > VmFlags: rd ex mr mw me lo sd mlockall() seems to lock everything though, it just never returns. Pretty sure that it's not a copy&paste error. Got a couple more runs that have an "odd size" - this time with 3kB... All "Locked" values seem to be okay - except that one. And it's always odd for the same one (the one with `Size: 1504 kB`). It's not always odd (3 kB or 5 kB) though - sometimes it says 4 kB. Seems it's a little breadcrumb? 560429953000-560429954000 r--p 00000000 103:02 49172550 /home/snazy/devel/misc/zzz/test Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 4 kB Private_Dirty: 0 kB Referenced: 4 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd mr mw me dw lo sd 560429954000-560429955000 r-xp 00001000 103:02 49172550 /home/snazy/devel/misc/zzz/test Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 4 kB Private_Dirty: 0 kB Referenced: 4 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd ex mr mw me dw lo sd 560429955000-560429956000 r--p 00002000 103:02 49172550 /home/snazy/devel/misc/zzz/test Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 4 kB Private_Dirty: 0 kB Referenced: 4 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd mr mw me dw lo sd 560429956000-560429957000 r--p 00002000 103:02 49172550 /home/snazy/devel/misc/zzz/test Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 4 kB Referenced: 4 kB Anonymous: 4 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd mr mw me dw lo ac sd 560429957000-560429958000 rw-p 00003000 103:02 49172550 /home/snazy/devel/misc/zzz/test Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 4 kB Referenced: 4 kB Anonymous: 4 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd wr mr mw me dw lo ac sd 5604299e7000-560429a08000 rw-p 00000000 00:00 0 [heap] Size: 132 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 132 kB Pss: 132 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 132 kB Referenced: 132 kB Anonymous: 132 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 132 kB THPeligible: 0 VmFlags: rd wr mr mw me lo ac sd 7f243057c000-7f24305a1000 r--p 00000000 103:02 44307431 /lib/x86_64-linux-gnu/libc-2.30.so Size: 148 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 144 kB Pss: 0 kB Shared_Clean: 144 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 144 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd mr mw me lo sd 7f24305a1000-7f2430719000 r-xp 00025000 103:02 44307431 /lib/x86_64-linux-gnu/libc-2.30.so Size: 1504 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 816 kB Pss: 3 kB Shared_Clean: 816 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 816 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 3 kB THPeligible: 0 VmFlags: rd ex mr mw me lo sd 7f2430719000-7f2430763000 r--p 0019d000 103:02 44307431 /lib/x86_64-linux-gnu/libc-2.30.so Size: 296 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 128 kB Pss: 0 kB Shared_Clean: 128 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 128 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd mr mw me lo sd 7f2430763000-7f2430766000 r--p 001e6000 103:02 44307431 /lib/x86_64-linux-gnu/libc-2.30.so Size: 12 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 12 kB Pss: 12 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 12 kB Referenced: 12 kB Anonymous: 12 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 12 kB THPeligible: 0 VmFlags: rd mr mw me lo ac sd 7f2430766000-7f2430769000 rw-p 001e9000 103:02 44307431 /lib/x86_64-linux-gnu/libc-2.30.so Size: 12 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 12 kB Pss: 12 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 12 kB Referenced: 12 kB Anonymous: 12 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 12 kB THPeligible: 0 VmFlags: rd wr mr mw me lo ac sd 7f2430769000-7f243076f000 rw-p 00000000 00:00 0 Size: 24 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 24 kB Pss: 24 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 24 kB Referenced: 24 kB Anonymous: 24 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 24 kB THPeligible: 0 VmFlags: rd wr mr mw me lo ac sd 7f243079a000-7f243079b000 r--p 00000000 103:02 44302414 /lib/x86_64-linux-gnu/ld-2.30.so Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 0 kB Shared_Clean: 4 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 4 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd mr mw me dw lo sd 7f243079b000-7f24307bd000 r-xp 00001000 103:02 44302414 /lib/x86_64-linux-gnu/ld-2.30.so Size: 136 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 136 kB Pss: 0 kB Shared_Clean: 136 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 136 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd ex mr mw me dw lo sd 7f24307bd000-7f24307c5000 r--p 00023000 103:02 44302414 /lib/x86_64-linux-gnu/ld-2.30.so Size: 32 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 32 kB Pss: 0 kB Shared_Clean: 32 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 32 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd mr mw me dw lo sd 7f24307c6000-7f24307c7000 r--p 0002b000 103:02 44302414 /lib/x86_64-linux-gnu/ld-2.30.so Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 4 kB Referenced: 4 kB Anonymous: 4 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd mr mw me dw lo ac sd 7f24307c7000-7f24307c8000 rw-p 0002c000 103:02 44302414 /lib/x86_64-linux-gnu/ld-2.30.so Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 4 kB Referenced: 4 kB Anonymous: 4 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd wr mr mw me dw lo ac sd 7f24307c8000-7f24307c9000 rw-p 00000000 00:00 0 Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 4 kB Referenced: 4 kB Anonymous: 4 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd wr mr mw me lo ac sd 7ffe7d4d0000-7ffe7d4f2000 rw-p 00000000 00:00 0 [stack] Size: 136 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 20 kB Pss: 20 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 20 kB Referenced: 20 kB Anonymous: 20 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 20 kB THPeligible: 0 VmFlags: rd wr mr mw me gd lo ac 7ffe7d502000-7ffe7d505000 r--p 00000000 00:00 0 [vvar] Size: 12 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 0 kB Pss: 0 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 0 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd mr pf io de dd sd 7ffe7d505000-7ffe7d506000 r-xp 00000000 00:00 0 [vdso] Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 0 kB Shared_Clean: 4 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 4 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd ex mr mw me de sd ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall] Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 0 kB Pss: 0 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 0 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: ex