Re: [PATCH] block: Check ADMIN before NICE for IOPRIO_CLASS_RT

On 11/15/21 10:38 AM, Alistair Delva wrote:

Booting to Android userspace on 5.14 or newer triggers the following SELinux denial:

avc: denied { sys_nice } for comm="init" capability=23 scontext=u:r:init:s0 tcontext=u:r:init:s0 tclass=capability permissive=0

Init is PID 0 running as root, so it already has CAP_SYS_ADMIN. For better compatibility with older SEPolicy, check ADMIN before NICE.

Seems a bit wonky to me, but the end result is the same. In any case, this warrants a comment above it detailing why the ordering is seemingly important.