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Test your applicationsThere is no fixed version for Centos:8
kernel-selftests-internal
.
Note: Versions mentioned in the description apply only to the upstream kernel-selftests-internal
package and not the kernel-selftests-internal
package as distributed by Centos
.
See How to fix?
for Centos:8
relevant fixed versions and status.
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 REQ_IDLE, other flags should not be ignored as well, for example REQ_META 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")