In the Linux kernel, the following vulnerability has been resolved:
block: don't use submitbionoacctnocheck in blkzonewplugbio_work
Bios queued up in the zone write plug have already gone through all all preparation in the submit_bio path, including the freeze protection.
Submitting them through submitbionoacct_nocheck duplicates the work and can can cause deadlocks when freezing a queue with pending bio write plugs.
Go straight to ->submitbio or blkmqsubmitbio to bypass the superfluous extra freeze protection and checks.