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-8260 Lustre <p>osd_io code seems to be using struct fiemap_extent's fi_extents_start field directly even though it has __user qualifier.<br/> We then pass this buffer straight into inode's fiemap method that does assume the pointer is userspace which is boind to break on some conigurations.</p> <p>We need to at least set ds to kernel_ds to have it working,<br/> or find some other wayst to call into fiemap code with kernelspace buffers.</p> <p>Offending functions are osd_fiemap_get() and osd_is_mapped()</p> LU-8260

osd_ldiskfs fiemap code wrong address space usage

Bug Major Resolved Fixed Arshad Hussain Oleg Drokin easy Sun, 12 Jun 2016 03:36:43 +0000 Thu, 21 Mar 2019 04:51:47 +0000 Thu, 21 Mar 2019 04:51:47 +0000 Lustre 2.13.0 0 5 <p>Arshad Hussain (arshad.super@gmail.com) uploaded a new patch: <a href="https://review.whamcloud.com/33878" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/33878</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-8260" title="osd_ldiskfs fiemap code wrong address space usage" class="issue-link" data-issue-key="LU-8260"><del>LU-8260</del></a> osd-ldiskfs: osd_fiemap_get() fix address space mismatch<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: ae220772026c20835bd79f01a419406f30042899</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/33878/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/33878/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-8260" title="osd_ldiskfs fiemap code wrong address space usage" class="issue-link" data-issue-key="LU-8260"><del>LU-8260</del></a> osd-ldiskfs: osd_fiemap_get() fix address space mismatch<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: dcafe7cb48f5e4582a4711652b38629c46675232</p> <p>Landed for 2.13</p> Development Rank 1|hzyedj: Rank (Obsolete) 9223372036854775807 Severity