From: Li Li <dualli@xxxxxxxxxx> As there isn't an atomic operation to freeze the main thread and binder interface together, it's possible the main thread initiates a new binder transaction while the binder interfaces are already frozen. This race issue will result in failed binder transaction and unexpectedly crash the app. This patch allows a post-froze rollback mechanism by checking if there's any new pending binder transaction waiting for response. At the same time, it treats the response transaction like an oneway transaction so that the response can successfully reach the frozen process. Changes in v2: 1. Improve commit msg, adding "Fixes" 2. Adding missing "_ilocked" suffix to binder_txns_pending() 3. Document bit assignment of struct binder_frozen_status_info in binder.h Li Li (1): binder: fix freeze race drivers/android/binder.c | 34 +++++++++++++++++++++++++---- drivers/android/binder_internal.h | 2 ++ include/uapi/linux/android/binder.h | 7 ++++++ 3 files changed, 39 insertions(+), 4 deletions(-) -- 2.33.0.309.g3052b89438-goog _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
