{"id":"CVE-2026-97521","published":"2026-09-24T17:17:30.160","lastModified":"2026-09-28T06:16:38.160","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: fix quota init duplicate scan\n\ngfs2_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().\n\nOn PREEMPT_RT this may sleep, which is not allowed under the bucket\nbitlock, triggering \"sleeping function called from invalid context\".\n\nUse a no-ref bucket lookup in this path, then continue duplicate\nhandling without taking a lockref there.\n\nRefactor gfs2_qd_search_bucket() to build on top of the no-ref helper\nso lookup traversal stays in one place.\n\nThis patch fixes a bug reported by syzbot.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/7fdcf16e5e14e11028f5bcaa6d25075eb5e876a0","tags":[]},{"url":"https://git.kernel.org/stable/c/812a766e2b0a8f4d094393fad13475c57f5f86db","tags":[]},{"url":"https://git.kernel.org/stable/c/b99a1f0f18ee50445907f55069e88bcfd8947383","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}