In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
gfs2: fix quota init duplicate scan<\/p>\n
gfs2_quota_init() checks for duplicate quota_change IDs while holding
\nqd_lock and the quota hash bucket bitlock. That path used
\ngfs2_qd_search_bucket(), which takes a lockref reference via
\nlockref_get_not_dead().<\/p>\n
On PREEMPT_RT this may sleep, which is not allowed under the bucket
\nbitlock, triggering “sleeping function called from invalid context”.<\/p>\n
Use a no-ref bucket lookup in this path, then continue duplicate
\nhandling without taking a lockref there.<\/p>\n
Refactor gfs2_qd_search_bucket() to build on top of the no-ref helper
\nso lookup traversal stays in one place.<\/p>\n
This patch fixes a bug reported by syzbot.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
gfs2: fix quota init duplicate scan<\/p>\n
gfs2_quota_init() checks for duplicate quota_change IDs while holding
\nqd_lock and the quota ha<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-28753","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/28753","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=28753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}