AZL-103757
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-103757.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-103757
- Upstream
- Published
- 2026-09-24T17:17:30Z
- Modified
- 2026-09-25T14:15:54Z
- Summary
- CVE-2026-97521 affecting package kernel 6.6.157.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
gfs2: fix quota init duplicate scan
gfs2_quota_init() checks for duplicate quota_change IDs while holding qd_lock and the quota hash bucket bitlock. That path used gfs2_qd_search_bucket(), which takes a lockref reference via lockref_get_not_dead().
On PREEMPT_RT this may sleep, which is not allowed under the bucket bitlock, triggering "sleeping function called from invalid context".
Use a no-ref bucket lookup in this path, then continue duplicate handling without taking a lockref there.
Refactor gfs2_qd_search_bucket() to build on top of the no-ref helper so lookup traversal stays in one place.
This patch fixes a bug reported by syzbot.
- References