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authorAlistair Delva <adelva@google.com>2021-11-15 18:16:55 +0000
committerJens Axboe <axboe@kernel.dk>2021-11-15 14:28:59 -0700
commit94c4b4fd25e6c3763941bdec3ad54f2204afa992 (patch)
tree1781f563bb78fffa586da1a565b59308d009dbd8 /lib/zstd
parentfa55b7dcdc43c1aa1ba12bca9d2dd4318c2a0dbf (diff)
block: Check ADMIN before NICE for IOPRIO_CLASS_RT
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. Fixes: 9d3a39a5f1e4 ("block: grant IOPRIO_CLASS_RT to CAP_SYS_NICE") Signed-off-by: Alistair Delva <adelva@google.com> Cc: Khazhismel Kumykov <khazhy@google.com> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Serge Hallyn <serge@hallyn.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Paul Moore <paul@paul-moore.com> Cc: selinux@vger.kernel.org Cc: linux-security-module@vger.kernel.org Cc: kernel-team@android.com Cc: stable@vger.kernel.org # v5.14+ Reviewed-by: Bart Van Assche <bvanassche@acm.org> Acked-by: Serge Hallyn <serge@hallyn.com> Link: https://lore.kernel.org/r/20211115181655.3608659-1-adelva@google.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
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