Description: nfs: Fix getxattr kernel panic and memory overflow
References:
 https://twitter.com/grsecurity/status/1303370421958578179
Notes:
Bugs:
upstream: released (5.9-rc1) [b4487b93545214a9db8cbf32e86411677b0cca21]
4.19-upstream-stable: released (4.19.141) [a906b868953a9c9bba44649a8fe760e818dd7224]
4.9-upstream-stable: released (4.9.233) [8973046648c4f0392f50d915ea1bdb639e930519]
sid: released (5.7.17-1)
4.19-buster-security: released (4.19.146-1)
4.9-stretch-security: released (4.9.240-1)