CVE-2024-26775

In the Linux kernel, the following vulnerability has been resolved: aoe:
avoid potential deadlock at set_capacity Move set_capacity() outside of the
section procected by (&d->lock). To avoid possible interrupt unsafe locking
scenario: CPU0 CPU1 ---- ---- [1] lock(&bdev->bd_size_lock);
local_irq_disable(); [2] lock(&d->lock); [3] lock(&bdev->bd_size_lock);
<Interrupt> [4] lock(&d->lock); *** DEADLOCK*** Where
1 hold by zram_add()->set_capacity().
[2]lock(&d->lock) hold by aoeblk_gdalloc(). And aoeblk_gdalloc() is trying
to acquire 3 at set_capacity() call. In this
situation an attempt to acquire [4]lock(&d->lock) from aoecmd_cfg_rsp()
will lead to deadlock. So the simplest solution is breaking lock dependency
2 -> 3 by moving set_capacity() outside.