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-12800 Lustre <p>mdd_parent_fid() reads xattrs without taking a lock, so the xattr cache can be populated with stale data. So link_ea data forms a cycle :</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre> osp &lt;struct osp_object 0xffff8800852091e0&gt; b'trusted.link' &lt;struct osp_xattr_entry 0xffff880085836d80&gt; &lt;struct link_ea_entry 0xffff880085836dde&gt; b'16' [0x2c0000400:0x21:0x0] osp &lt;struct osp_object 0xffff880085208420&gt; b'trusted.link' &lt;struct osp_xattr_entry 0xffff8801246c1780&gt; &lt;struct link_ea_entry 0xffff8801246c17de&gt; b'[0x2c0000400:0x21:0x0]:0' [0x2c0000404:0x720:0x0] osp &lt;struct osp_object 0xffff880085209080&gt; b'trusted.link' &lt;struct osp_xattr_entry 0xffff880085836700&gt; &lt;struct link_ea_entry 0xffff88008583675e&gt; b'8' [0x280000403:0x7:0x0] osp &lt;struct osp_object 0xffff8800852082c0&gt; b'trusted.link' &lt;struct osp_xattr_entry 0xffff880083db1300&gt; &lt;struct link_ea_entry 0xffff880083db135e&gt; b'[0x280000403:0x7:0x0]:3' [0x2c0000409:0x729:0x0] </pre> </div></div> <p>It is reproduced by racer.</p> LU-12800

mdd_is_parent() goes into infinite loop

Bug Minor Resolved Fixed Andriy Skulysh Andriy Skulysh Wed, 25 Sep 2019 11:51:44 +0000 Wed, 9 Oct 2019 22:44:28 +0000 Wed, 9 Oct 2019 22:44:28 +0000 Lustre 2.13.0 0 2 <p>Andriy Skulysh (c17819@cray.com) uploaded a new patch: <a href="https://review.whamcloud.com/36287" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/36287</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-12800" title="mdd_is_parent() goes into infinite loop" class="issue-link" data-issue-key="LU-12800"><del>LU-12800</del></a> mdd: do not cache atributes on mdd_parent_fid<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: c879733feeb408fe7cc4b37cc9dcce214fedca84</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/36287/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/36287/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-12800" title="mdd_is_parent() goes into infinite loop" class="issue-link" data-issue-key="LU-12800"><del>LU-12800</del></a> mdd: do not cache atributes on mdd_parent_fid<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: a38c587cbf3be2e9870941601f34e355e6dced2f</p> <p>Landed for 2.13</p> Development Rank 1|i00n9j: Rank (Obsolete) 9223372036854775807 Severity