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-16584 Lustre <p>LBUG in mdc_page_locate is happening from time to time on our HPC login nodes and ARC node. </p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[134359.416653] LustreError: 3619:0:(mdc_request.c:1142:mdc_page_locate()) ASSERTION( *start &lt;= *hash ) failed: start = 0x574,end = 0x18e,hash = 0x18e [134359.420056] LustreError: 3619:0:(mdc_request.c:1142:mdc_page_locate()) LBUG [134359.422647] Pid: 3619, comm: cache-clean 3.10.0-1160.83.1.el7.x86_64 #1 SMP Wed Jan 25 16:41:43 UTC 2023 [134359.425367] Call Trace: [134359.429821] [&lt;ffffffffc08567cc&gt;] libcfs_call_trace+0x8c/0xd0 [libcfs] [134359.432752] [&lt;ffffffffc085689c&gt;] lbug_with_loc+0x4c/0xa0 [libcfs] [134359.434703] [&lt;ffffffffc0b60a80&gt;] mdc_read_page+0x8a0/0x970 [mdc] [134359.436624] [&lt;ffffffffc0dac1e6&gt;] lmv_read_page+0x156/0x3b0 [lmv] [134359.438808] [&lt;ffffffffc0dd98ec&gt;] ll_get_dir_page+0xac/0x1b0 [lustre] [134359.441457] [&lt;ffffffffc0dd9ccf&gt;] ll_dir_read+0x20f/0x320 [lustre] [134359.443544] [&lt;ffffffffc0dd9f20&gt;] ll_readdir+0x140/0x4d0 [lustre] [134359.445484] [&lt;ffffffffa7c717af&gt;] iterate_dir+0x9f/0x140 [134359.448575] [&lt;ffffffffa7c71cdc&gt;] SyS_getdents+0x9c/0x120 [134359.450480] [&lt;ffffffffa81c539a&gt;] system_call_fastpath+0x25/0x2a [134359.452632] [&lt;ffffffffffffffff&gt;] 0xffffffffffffffff [134359.458091] Kernel panic - not syncing: LBUG [134359.459266] CPU: 1 PID: 3619 Comm: cache-clean Kdump: loaded Tainted: G OE ------------ 3.10.0-1160.83.1.el7.x86_64 #1 [134359.461671] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 [134359.462959] Call Trace: [134359.463877] [&lt;ffffffffa81b1bec&gt;] dump_stack+0x19/0x1f [134359.465676] [&lt;ffffffffa81ab708&gt;] panic+0xe8/0x21f [134359.467002] [&lt;ffffffffc08568eb&gt;] lbug_with_loc+0x9b/0xa0 [libcfs] [134359.468329] [&lt;ffffffffc0b60a80&gt;] mdc_read_page+0x8a0/0x970 [mdc] [134359.469654] [&lt;ffffffffc0dac1e6&gt;] lmv_read_page+0x156/0x3b0 [lmv] [134359.471193] [&lt;ffffffffc0dd98ec&gt;] ll_get_dir_page+0xac/0x1b0 [lustre] [134359.472991] [&lt;ffffffffc0e16ef0&gt;] ? ll_md_need_convert+0x1b0/0x1b0 [lustre] [134359.474933] [&lt;ffffffffc0dd9ccf&gt;] ll_dir_read+0x20f/0x320 [lustre] [134359.476628] [&lt;ffffffffa7c71850&gt;] ? iterate_dir+0x140/0x140 [134359.477767] [&lt;ffffffffc0dd9f20&gt;] ll_readdir+0x140/0x4d0 [lustre] [134359.478923] [&lt;ffffffffa7c71850&gt;] ? iterate_dir+0x140/0x140 [134359.480001] [&lt;ffffffffa7c717af&gt;] iterate_dir+0x9f/0x140 [134359.481022] [&lt;ffffffffa7c71cdc&gt;] SyS_getdents+0x9c/0x120 [134359.482050] [&lt;ffffffffa7c71850&gt;] ? iterate_dir+0x140/0x140 [134359.483325] [&lt;ffffffffa81c539a&gt;] system_call_fastpath+0x25/0x2a</pre> </div></div> <p>vmcore available additional info is needed</p> LU-16584

mdc_page_locate(): ASSERTION( *start <= *hash ) failed

Bug Minor Open Unresolved WC Triage Lukasz Flis Mon, 20 Feb 2023 12:27:59 +0000 Tue, 21 Feb 2023 23:36:11 +0000 0 2 <p>seems like already patched in <a href="https://jira.whamcloud.com/browse/LU-4472" title="sanity-quota test_8: mdc_page_locate() ASSERTION( *start &lt;= *hash )" class="issue-link" data-issue-key="LU-4472"><del>LU-4472</del></a> </p> <p>Could you please advise as to which version this was observed on?</p> <p>This must have been lost while moving tickets (it was in environment section), readding for the sake of completeness:</p> <div class='table-wrap'> <table class='confluenceTable'><tbody> <tr> <td class='confluenceTd'>client versions affected: <br/> 2.12.8_26_ga3cc651<br/> 2.12.9_38_g20b8a89<br/> os: centos 7.9<br/>   3.10.0-1160.71.1.el7.x86_64<br/>   3.10.0-1160.83.1.el7.x86_64</td> </tr> </tbody></table> </div> <p> </p> Development Rank 1|i03ejr: Rank (Obsolete) 9223372036854775807 Severity