Description: kcm: avoid potential race in kcm_tx_work
References:
Notes:
 carnil> In Debian CONFIG_AF_KCM is not set (but there is a pending
 carnil> request for enablement in #1023958)
 carnil> Fixed as well in 6.0.10 for 6.10.y.
Bugs:
upstream: released (6.1-rc1) [ec7eede369fe5b0d085ac51fdbb95184f87bfc6c]
5.10-upstream-stable: released (5.10.156) [7deb7a9d33e4941c5ff190108146d3a56bf69e9d]
4.19-upstream-stable: released (4.19.267) [23a0a5869749c7833772330313ae7aec6581ec60]
sid: released (6.0.10-1)
5.10-bullseye-security: released (5.10.158-1)
4.19-buster-security: released (4.19.269-1)