Description: arm64/sme: Always exit sme_alloc() early with existing storage
References:
Notes:
 carnil> Introduced in 5d0a8d2fba50 ("arm64/ptrace: Ensure that SME is set up for target
 carnil> when writing SSVE state"). Vulnerable versions: 6.1.47 6.4.12 6.5-rc7.
Bugs:
upstream: released (6.8-rc1) [dc7eb8755797ed41a0d1b5c0c39df3c8f401b3d9]
6.7-upstream-stable: released (6.7.3) [814af6b4e6000e574e74d92197190edf07cc3680]
6.6-upstream-stable: released (6.6.15) [569156e4fa347237f8fa2a7e935d860109c55ac4]
6.1-upstream-stable: needed
5.10-upstream-stable: N/A "Vulnerable code not present"
4.19-upstream-stable: N/A "Vulnerable code not present"
sid: released (6.6.15-1)
6.1-bookworm-security: needed
5.10-bullseye-security: N/A "Vulnerable code not present"
4.19-buster-security: N/A "Vulnerable code not present"