https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-17311 Lustre <p>On Ubuntu 20.04.5 (5.4.0-48-generic kernel) with master</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> $sudo lustre/tests/llmount.sh $sudo cp -R ldiskfs /mnt/lustre </pre> </div></div> <p>Leads to the fault:</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> [ 2727.782017] [0696cb192203d55d] address between user and kernel address ranges [ 2727.828021] pc : kmem_cache_alloc+0x90/0x260 [ 2727.829114] lr : kmem_cache_alloc+0x64/0x260 [ 2727.847049]  kmem_cache_alloc+0x90/0x260 [ 2727.847163]  security_file_alloc+0x34/0x98 [ 2727.847280]  __alloc_file+0x60/0x100 [ 2727.847382]  alloc_empty_file+0x68/0x100 [ 2727.847496]  path_openat+0x58/0x13a0 [ 2727.847603]  do_filp_open+0x88/0x110 [ 2727.847873]  do_sys_open+0x188/0x2b8 [ 2727.848090]  __arm64_sys_openat+0x30/0x40 [ 2727.848246]  el0_svc_common.constprop.0+0xf4/0x200 [ 2727.849324]  el0_svc_handler+0x38/0xa8 [ 2727.849441]  el0_svc+0x10/0x180</pre> </div></div> <p> <br/> Bisect shows:</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> git bisect good 79950e5d4c356fd4452c61f1097d53d30e779e7b is the first bad commit commit 79950e5d4c356fd4452c61f1097d53d30e779e7b Author: Qian Yingjin &lt;qian@ddn.com&gt; Date: Tue Jun 6 15:11:30 2023 +0700 LU-16713 llite: writeback/commit pages under memory pressure </pre> </div></div> <p>Revering this patch, solves the problem</p> Ubuntu 20.04.5 <br/> 5.4.0-48-generic LU-17311

Regression after "LU-16713 llite: writeback/commit pages under memory pressure" patch

Bug Major Open Unresolved Qian Yingjin Artem Blagodarenko Thu, 23 Nov 2023 23:04:09 +0000 Fri, 24 Nov 2023 14:35:58 +0000 0 4 <p>"Artem Blagodarenko &lt;ablagodarenko@ddn.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/53220" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/53220</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-17311" title=" Regression after &quot;LU-16713 llite: writeback/commit pages under memory pressure&quot; patch" class="issue-link" data-issue-key="LU-17311">LU-17311</a> llite: revert <a href="https://jira.whamcloud.com/browse/LU-16713" title="Writeback and commit pages under memory pressure to avoid OOM" class="issue-link" data-issue-key="LU-16713"><del>LU-16713</del></a> patch and fixes<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 76fe616dac94f39f59ca3dec78c043cc5e37cc25</p> <p>Does this problem only affect older unsupported kernels like Ubuntu 20.04?</p> <p>&gt;Does this problem only affect older unsupported kernels like Ubuntu 20.04?</p> <p><a href="https://jira.whamcloud.com/secure/ViewProfile.jspa?name=pjones" class="user-hover" rel="pjones">pjones</a> This happened on 20.04.5 (5.4.0-48-generic kernel). I haven't checked on any other versions. I have pushed <a href="https://review.whamcloud.com/c/fs/lustre-release/+/53220" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/53220</a> to estimate whether something changed on other builds. BTW, what Ubuntu version should I use to test supported clients for master?</p> <p>Lustre 2.16 is targeting to support Ubuntu 22.04 clients. We really want to have cgroup support for Lustre and this is more complicated to do on older kernels but users wanting to use older kernels can use 2.15.x releases so this should not be an impediment to landing this code to master.</p> Development Rank 1|i042nj: Rank (Obsolete) 9223372036854775807 Severity