Description: net/sched: tcindex: update imperfect hash filters respecting rcu
References:
 https://kernel.dance/#ee059170b1f7e94e55fa6cadee544e176a6e59c2
 https://www.openwall.com/lists/oss-security/2023/04/11/3
Notes:
 carnil> Commit fixes 9b0d4446b569 ("net: sched: avoid atomic swap in
 carnil> tcf_exts_change") in 4.14-rc1.
 bwh> For 4.19, this was fixed along with CVE-2023-1829 by removing
 bwh> tcindex.
Bugs:
upstream: released (6.2) [ee059170b1f7e94e55fa6cadee544e176a6e59c2]
6.1-upstream-stable: released (6.1.13) [bd662ba56187b5ef8a62a3511371cd38299a507f]
5.10-upstream-stable: released (5.10.169) [eb8e9d8572d1d9df17272783ad8a84843ce559d4]
4.19-upstream-stable: released (4.19.276) [01d0d2b8b4e3cf2110baba9371c0c3d04ad5c77b]
sid: released (6.1.15-1)
5.10-bullseye-security: released (5.10.178-1)
4.19-buster-security: released (4.19.282-1)