CVE-2025-22125
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-22125
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-22125.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-22125
- Downstream
- Related
- Published
- 2025-04-16T15:16:06Z
- Modified
- 2025-09-09T17:15:42Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
md/raid1,raid10: don't ignore IO flags
If blk-wbt is enabled by default, it's found that raid write performance is quite bad because all IO are throttled by wbt of underlying disks, due to flag REQ_IDLE is ignored. And turns out this behaviour exist since blk-wbt is introduced.
Other than REQIDLE, other flags should not be ignored as well, for example REQMETA can be set for filesystems, clearing it can cause priority reverse problems; And REQ_NOWAIT should not be cleared as well, because io will wait instead of failing directly in underlying disks.
Fix those problems by keep IO flags from master bio.
Fises: f51d46d0e7cb ("md: add support for REQ_NOWAIT")
- References