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-13121 Lustre <p>ll_update_lsm_md() down_write() if lli-&gt;lli_lsm_md is NULL, and tries to initialize it, but if a concurrent lookup initialized lli-&gt;lli_lsm_md after this check and before taking write lock, it will up_read(), so the write lock is not released, therefore subsequent lookup will deadlock on this.</p> LU-13121

ll_update_lsm_md() may deadlock

Bug Minor Resolved Fixed Lai Siyao Lai Siyao Fri, 10 Jan 2020 14:03:13 +0000 Mon, 10 Feb 2020 01:17:31 +0000 Thu, 23 Jan 2020 20:03:31 +0000 Lustre 2.12.0 Lustre 2.13.0 Lustre 2.14.0 Lustre 2.12.4 Sun, 10 May 2020 00:00:00 +0000 0 3 <p>Lai Siyao (lai.siyao@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/37182" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/37182</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13121" title="ll_update_lsm_md() may deadlock" class="issue-link" data-issue-key="LU-13121"><del>LU-13121</del></a> llite: fix deadlock in ll_update_lsm_md()<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: b6fe727cb5d2902b39964f77945110251177feda</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/37182/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/37182/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13121" title="ll_update_lsm_md() may deadlock" class="issue-link" data-issue-key="LU-13121"><del>LU-13121</del></a> llite: fix deadlock in ll_update_lsm_md()<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 3746550282c865deebb07bfd92bcb4d1dabdc675</p> <p>Landed for 2.14</p> <p>Lai Siyao (lai.siyao@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/37325" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/37325</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13121" title="ll_update_lsm_md() may deadlock" class="issue-link" data-issue-key="LU-13121"><del>LU-13121</del></a> llite: fix deadlock in ll_update_lsm_md()<br/> Project: fs/lustre-release<br/> Branch: b2_12<br/> Current Patch Set: 1<br/> Commit: e6b51d19800a73e709b6e9966c60303c9edcd8f7</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/37325/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/37325/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13121" title="ll_update_lsm_md() may deadlock" class="issue-link" data-issue-key="LU-13121"><del>LU-13121</del></a> llite: fix deadlock in ll_update_lsm_md()<br/> Project: fs/lustre-release<br/> Branch: b2_12<br/> Current Patch Set: <br/> Commit: ed1391adec4a10075a72b21c506293c6cf9ece95</p> Related LU-13099 Development Rank 1|i00rtz: Rank (Obsolete) 9223372036854775807 Severity