CVE-2024-35808

In the Linux kernel, the following vulnerability has been resolved:
md/dm-raid: don’t call md_reap_sync_thread() directly Currently
md_reap_sync_thread() is called from raid_message() directly without
holding ‘reconfig_mutex’, this is definitely unsafe because
md_reap_sync_thread() can change many fields that is protected by
‘reconfig_mutex’. However, hold ‘reconfig_mutex’ here is still problematic
because this will cause deadlock, for example, commit 130443d60b1b (“md:
refactor idle/frozen_sync_thread() to fix deadlock”). Fix this problem by
using stop_sync_thread() to unregister sync_thread, like md/raid did.