CVE-2022-49341 bpf, arm64: Clear prog->jited_len along prog->jited

In the Linux kernel, the following vulnerability has been resolved: bpf, arm64: Clear prog-jitedlen along prog-jited syzbot reported an illegal copytouser attempt from bpfproggetinfobyfd 1 There was no repro yet on this bug, but I think that commit 0aef499f3172 "mm/usercopy: Detect vmalloc...