coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping [PATCH v3 1/2]: Backporting of commit 04f5866e41fb70690e28397487d8bd8eea7d712a upstream. [PATCH v3 2/2]: Extension of commit 04f5866e41fb to fix the race condition between get_task_mm() and core dumping for IB->mlx4 and IB->mlx5 drivers. [diff from v2]: - moved mmget_still_valid to mm.h in [PATCH v3 1/2] - added binder.c changes in [PATCH v3 1/2] - added [PATCH v3 2/2]
