Restrict creation of bootreceiver tracing instance to 64-bit systems.
The main users of this instance are KFENCE and MTE-aided KASAN, which are only supported on arm64.
Skip creation of this tracing instance on 32-bit systems to save ~6Mb memory on low-end devices.
Bug: 195089948
Bug: 194719088
Bug: 194156700
Change-Id: Icaf762715fed7a282b1ad738c10bcb45dc848f4d
diff --git a/rootdir/init.rc b/rootdir/init.rc
index a7322fa..ab0aff5 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -591,9 +591,10 @@
# Load trusted keys from dm-verity protected partitions
exec -- /system/bin/fsverity_init --load-verified-keys
+on late-fs && property:ro.product.cpu.abilist64=*
# Set up a tracing instance for system_server to monitor error_report_end events.
# These are sent by kernel tools like KASAN and KFENCE when a memory corruption
- # is detected.
+ # is detected. This is only needed for 64-bit systems.
mkdir /sys/kernel/tracing/instances/bootreceiver 0700 system system
restorecon_recursive /sys/kernel/tracing/instances/bootreceiver
write /sys/kernel/tracing/instances/bootreceiver/buffer_size_kb 1