linux-stable-5.10-y CVE-2022-1508 of io_uring module

[Guo Xuenan]

Hi, Pavel & Jens

CVE-2022-1508[1] contains an patch[2] of io_uring. As Jones reported,
it is not enough only apply [2] to stable-5.10. 
Io_uring is very valuable and active module of linux kernel.
I've tried to apply these two patches[3] [4] to my local 5.10 code, I
found my understanding of io_uring is not enough to resolve all conflicts.

Since 5.10 is an important stable branch of linux, we would appreciate
your help in soloving this problem.

[1] https://access.redhat.com/security/cve/cve-2022-1508
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89c2b3b7491
[3] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8fb0f47a9d7
[4] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cd65869512a

Best regards
Xuenan