Description: vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
References:
Notes:
 carnil> for 5.5.y fixed already in 5.5.15.
Bugs:
upstream: released (5.7-rc1) [ca4463bf8438b403596edd0ec961ca0d4fbe0220]
5.10-upstream-stable: N/A "fixed before branch point"
4.19-upstream-stable: released (4.19.114) [54584f79579b9f6ed49b93cadcd2361223ecce28]
sid: released (5.5.17-1)
5.10-bullseye-security: N/A "fixed before branch point"
4.19-buster-security: released (4.19.118-1)