CVE-2023-53620

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> md: fix soft lockup in status_resync<br /> <br /> status_resync() will calculate &amp;#39;curr_resync - recovery_active&amp;#39; to show<br /> user a progress bar like following:<br /> <br /> [============&gt;........] resync = 61.4%<br /> <br /> &amp;#39;curr_resync&amp;#39; and &amp;#39;recovery_active&amp;#39; is updated in md_do_sync(), and<br /> status_resync() can read them concurrently, hence it&amp;#39;s possible that<br /> &amp;#39;curr_resync - recovery_active&amp;#39; can overflow to a huge number. In this<br /> case status_resync() will be stuck in the loop to print a large amount<br /> of &amp;#39;=&amp;#39;, which will end up soft lockup.<br /> <br /> Fix the problem by setting &amp;#39;resync&amp;#39; to MD_RESYNC_ACTIVE in this case,<br /> this way resync in progress will be reported to user.