In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
sched_ext: Replace SCX_RQ_BAL_KEEP with a dispatch verdict return<\/p>\n
SCX_RQ_BAL_KEEP tells the pick to keep running the previous task, a leftover
\nfrom when balancing and picking were separate operations. An rq-level flag
\nonly works while dispatches and picks pair up one to one, which core
\nscheduling breaks: selections interleave through dispatch’s lock drops and a
\npick can consume a stale flag, keeping a task that has since been dequeued.
\nFixing core scheduling support requires the decision to travel with the
\ndispatch that made it. Make scx_dispatch_sched() and balance_one() return an
\nexplicit verdict instead and drop the flag’s plumbing from the tools autogen
\nenum headers.<\/p>\n
Also factor the pick-side invocation, its follow-up queueing and the
\npost-dispatch checks out of do_pick_task_scx() into dispatch_pick(). No
\nfunctional changes intended.<\/p>\n
v2: Drop the SCX_RQ_BAL_KEEP plumbing from the tools autogen enum headers
\n as well (Andrea).<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
sched_ext: Replace SCX_RQ_BAL_KEEP with a dispatch verdict return<\/p>\n
SCX_RQ_BAL_KEEP tells the pick to keep running the previous task<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21441","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21441","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}