Allow global read access to /sys/kernel/mm/transparent_hugepage/
If kernel is built with CONFIG_TRANSPARENT_HUGEPAGE optimization,
libjemalloc5 will attempt to read
/sys/kernel/mm/transparent_hugepage/enabled and hit an SELinux denial.
Various denials similiar to the following are seen on cuttlefish:
avc: denied { open } for comm="surfaceflinger"
path="/sys/kernel/mm/transparent_hugepage/enabled" dev="sysfs" ino=776
scontext=u:r:surfaceflinger:s0 tcontext=u:object_r:sysfs:s0 tclass=file
permissive=1
Bug: 28053261
Test: boot cuttlefish without above denials.
Change-Id: Ic33f12d31aacc42d662a8c5c297fbb5f84d4deea
diff --git a/private/isolated_app.te b/private/isolated_app.te
index b7c812b..94b49b0 100644
--- a/private/isolated_app.te
+++ b/private/isolated_app.te
@@ -127,6 +127,7 @@
neverallow isolated_app {
sysfs_type
-sysfs_devices_system_cpu
+ -sysfs_transparent_hugepage
-sysfs_usb # TODO: check with audio team if needed for isolated_app (b/28417852)
}:file no_rw_file_perms;