Whamcloud Community JIRA https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 [LU-8014] potential memory dereference in kuc_ispayload() https://jira.whamcloud.com/browse/LU-8014 Lustre <p>That function takes a pointer, decrements it and dereference the new address. However we have no idea if the page it's in is readable or even exists. Such dereference would cause an oops.</p> LU-8014 potential memory dereference in kuc_ispayload() Bug Minor Resolved Fixed Frank Zago Frank Zago Tue, 12 Apr 2016 21:43:18 +0000 Thu, 31 Aug 2017 18:28:32 +0000 Sun, 24 Jul 2016 15:00:21 +0000 Lustre 2.9.0 0 7 <p>Frank Zago (fzago@cray.com) uploaded a new patch: <a href="http://review.whamcloud.com/19494" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/19494</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-8014" title="potential memory dereference in kuc_ispayload()" class="issue-link" data-issue-key="LU-8014"><del>LU-8014</del></a> hsm: remove kuc_ispayload<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 70784451511e39c21863268c63c89a10e259cddd</p> <p>An optimization would be to use kuc_alloc earlier to allocate the hal, and change mdt_hsm_agent_send to take a KUC buffer instead of a hal.</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="http://review.whamcloud.com/19494/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/19494/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-8014" title="potential memory dereference in kuc_ispayload()" class="issue-link" data-issue-key="LU-8014"><del>LU-8014</del></a> hsm: remove kuc_ispayload<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 9091a934fcff06538e277d87c3953775e692d9fa</p> <p>Landed to master for 2.9.0</p> <p>Frank Zago (fzago@cray.com) uploaded a new patch: <a href="http://review.whamcloud.com/19869" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/19869</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-8014" title="potential memory dereference in kuc_ispayload()" class="issue-link" data-issue-key="LU-8014"><del>LU-8014</del></a> hsm: remove invalid kuc_free in coordinator<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 1db3aa54f1f41719bf1a4bec2e6d172734959c00</p> <p>Reopen to track <a href="http://review.whamcloud.com/19869" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/19869</a> landing.</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="http://review.whamcloud.com/19869/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/19869/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-8014" title="potential memory dereference in kuc_ispayload()" class="issue-link" data-issue-key="LU-8014"><del>LU-8014</del></a> hsm: remove invalid kuc_free in coordinator<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 12ac7f2baa3691eaf74d468aedb7615f6ddf6d60</p> <p>Both patches now landed for 2.9</p> Related Development Rank 1|hzy7rz: Rank (Obsolete) 9223372036854775807 Severity