CVE-2021-47170

In the Linux kernel, the following vulnerability has been resolved: USB:
usbfs: Don’t WARN about excessively large memory allocations Syzbot found
that the kernel generates a WARNing if the user tries to submit a bulk
transfer through usbfs with a buffer that is way too large. This isn’t a
bug in the kernel; it’s merely an invalid request from the user and the
usbfs code does handle it correctly. In theory the same thing can happen
with async transfers, or with the packet descriptor table for isochronous
transfers. To prevent the MM subsystem from complaining about these bad
allocation requests, add the __GFP_NOWARN flag to the kmalloc calls for
these buffers.