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-7396 Lustre <p>This is likely because in <tt>ll_migrate()</tt> we do not handle failures from <tt>md_rename()</tt> properly.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre># export MDSCOUNT=4 # llmount.sh ... # cd /mnt/lustre # mkdir d0 # lfs migrate -m 42 d0 </pre> </div></div> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[ 7176.545415] BUG: unable to handle kernel NULL pointer dereference at 0000000000000328 [ 7176.546390] IP: [&lt;ffffffffa0cc9fe8&gt;] __req_capsule_get+0x48/0x6f0 [ptlrpc] [ 7176.546390] PGD abe39067 PUD ab548067 PMD 0 [ 7176.546390] Oops: 0000 [#1] SMP ... [ 7176.546390] Process lfs (pid: 5703, threadinfo ffff8800ab54c000, task ffff8800ab4e81c0) [ 7176.546390] Stack: [ 7176.546390] ffff8800ab54db58 ffffffff810b74bd ffff8800ab54dba8 0000000000000282 [ 7176.546390] &lt;d&gt; ffff8800ab54dba8 ffffffffa0f74821 0000000000000000 ffff8800ad394330 [ 7176.546390] &lt;d&gt; 0000000000000320 ffff8800b2460a78 ffff8800ab449ca8 ffff8800b23ed138 [ 7176.546390] Call Trace: [ 7176.546390] [&lt;ffffffff810b74bd&gt;] ? trace_hardirqs_on+0xd/0x10 [ 7176.546390] [&lt;ffffffffa0f74821&gt;] ? lmv_getattr+0x121/0x560 [lmv] [ 7176.546390] [&lt;ffffffffa0cca798&gt;] req_capsule_server_get+0x18/0x20 [ptlrpc] [ 7176.546390] [&lt;ffffffffa1501010&gt;] ll_migrate+0x350/0x11f0 [lustre] [ 7176.546390] [&lt;ffffffffa14ededa&gt;] ll_dir_ioctl+0x5f4a/0x6460 [lustre] [ 7176.546390] [&lt;ffffffff8115eb20&gt;] ? handle_pte_fault+0x90/0xa50 [ 7176.546390] [&lt;ffffffffa14e39b0&gt;] ? ll_dir_open+0x0/0xf0 [lustre] [ 7176.546390] [&lt;ffffffffa14e39b0&gt;] ? ll_dir_open+0x0/0xf0 [lustre] [ 7176.546390] [&lt;ffffffff8115f70a&gt;] ? handle_mm_fault+0x22a/0x300 [ 7176.546390] [&lt;ffffffff810a4523&gt;] ? up_read+0x23/0x40 [ 7176.546390] [&lt;ffffffff8104bc84&gt;] ? __do_page_fault+0x244/0x4b0 [ 7176.546390] [&lt;ffffffff811b8902&gt;] vfs_ioctl+0x22/0xa0 [ 7176.546390] [&lt;ffffffff810b74bd&gt;] ? trace_hardirqs_on+0xd/0x10 [ 7176.546390] [&lt;ffffffff811b8aa4&gt;] do_vfs_ioctl+0x84/0x590 [ 7176.546390] [&lt;ffffffff811b9031&gt;] sys_ioctl+0x81/0xa0 [ 7176.546390] [&lt;ffffffff8100b072&gt;] system_call_fastpath+0x16/0x1b </pre> </div></div> LU-7396

lfs migrate handler oopses on bad MDT indexes

Bug Critical Resolved Fixed Di Wang John Hammond Thu, 5 Nov 2015 19:48:22 +0000 Mon, 30 Nov 2015 17:40:23 +0000 Mon, 30 Nov 2015 17:40:23 +0000 Lustre 2.8.0 Lustre 2.8.0 0 4 <p>Di,<br/> could you please take a look at this issue for 2.8?<br/> Thanks.<br/> Joe</p> <p>wangdi (di.wang@intel.com) uploaded a new patch: <a href="http://review.whamcloud.com/17079" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/17079</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-7396" title="lfs migrate handler oopses on bad MDT indexes" class="issue-link" data-issue-key="LU-7396"><del>LU-7396</del></a> llite: check request != NULL in ll_migrate<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 702659da72603cee8184b3a796ab3276c0e5634a</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="http://review.whamcloud.com/17079/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/17079/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-7396" title="lfs migrate handler oopses on bad MDT indexes" class="issue-link" data-issue-key="LU-7396"><del>LU-7396</del></a> llite: check request != NULL in ll_migrate<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 544d46eb8f13b9ba9f33d0af796665c11ea45163</p> <p>Landed for 2.8</p> Development Rank 1|hzxse7: Rank (Obsolete) 9223372036854775807 Severity