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-8543 Lustre <p>Al Viro advises us that we cannot just use parent inode like that unguarded.</p> <p>There are two problems.<br/> First, by the time we get to ll_Revalidate, the parent might change since nothing locks it, but there's nothing we could do about it.<br/> But the other problem - the parent inode could be freed while we are there and we do not hold a reference - so this should be fixed.<br/> We should convert to something like dget_parent.</p> LU-8543

ll_revalidate_dentry unsafe usage of parent inode

Bug Major Open Unresolved Oleg Drokin Oleg Drokin patch Thu, 25 Aug 2016 15:59:33 +0000 Sun, 30 Jan 2022 09:45:44 +0000 0 3 <p>Oleg Drokin (oleg.drokin@intel.com) uploaded a new patch: <a href="https://review.whamcloud.com/24176" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/24176</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-8543" title="ll_revalidate_dentry unsafe usage of parent inode" class="issue-link" data-issue-key="LU-8543">LU-8543</a> llite: Use dget_parent to safely access parent in revalidate<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 8f101693f988d9d053e9daca5c02f972d68332d1</p> Development Rank 1|hzym27: Rank (Obsolete) 9223372036854775807 Severity