CVE-2024-45023

In the Linux kernel, the following vulnerability has been resolved:

md/raid1: Fix data corruption for degraded array with slow disk

read_balance() will avoid reading from slow disks as much as possible,

however, if valid data only lands in slow disks, and a new normal disk

is still in recovery, unrecovered data can be read:

raid1_read_request

read_balance

raid1_should_read_first

-> return false

choose_best_rdev

-> normal disk is not recovered, return -1

choose_bb_rdev

-> missing the checking of recovery, return the normal disk

-> read unrecovered data

Root cause is that the checking of recovery is missing in

choose_bb_rdev(). Hence add such checking to fix the problem.

Also fix similar problem in choose_slow_rdev().