From dfd402a4c4baae42398ce9180ff424d589b8bffc Mon Sep 17 00:00:00 2001 From: Marco Elver Date: Thu, 14 Nov 2019 19:02:54 +0100 Subject: kcsan: Add Kernel Concurrency Sanitizer infrastructure Kernel Concurrency Sanitizer (KCSAN) is a dynamic data-race detector for kernel space. KCSAN is a sampling watchpoint-based data-race detector. See the included Documentation/dev-tools/kcsan.rst for more details. This patch adds basic infrastructure, but does not yet enable KCSAN for any architecture. Signed-off-by: Marco Elver Acked-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- init/init_task.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'init/init_task.c') diff --git a/init/init_task.c b/init/init_task.c index 9e5cbe5eab7b..2b4fe98b0f09 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -161,6 +161,14 @@ struct task_struct init_task #ifdef CONFIG_KASAN .kasan_depth = 1, #endif +#ifdef CONFIG_KCSAN + .kcsan_ctx = { + .disable_count = 0, + .atomic_next = 0, + .atomic_nest_count = 0, + .in_flat_atomic = false, + }, +#endif #ifdef CONFIG_TRACE_IRQFLAGS .softirqs_enabled = 1, #endif -- cgit v1.2.3