Hello. When I build
---------- test/test.c ---------- #include <linux/module.h> static int __init test_init(void) { DEFINE_SRCU(srcu); int idx = srcu_read_lock(&srcu); void *ptr = srcu_dereference(ptr, &srcu); srcu_read_unlock(&srcu, idx); return -EINVAL; } module_init(test_init); MODULE_LICENSE("GPL"); ---------- test/test.c ---------- with C=1 option, I get test/test.c:7:21: error: incompatible types in comparison expression (different address spaces) warning from --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -605,7 +605,7 @@ static inline void rcu_preempt_sleep_check(void) /* Dependency order vs. p above. */ \ typeof(*p) *________p1 = (typeof(*p) *__force)lockless_dereference(p); \ RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \ - rcu_dereference_sparse(p, space); \ + rcu_dereference_sparse(p, space); /** this line **/ \ ((typeof(*p) __force __kernel *)(________p1)); \ }) #define __rcu_dereference_protected(p, c, space) \ . I want to use srcu_dereference() at https://lists.01.org/pipermail/kbuild-all/2016-October/026587.html . Can we have srcu version of 995f1405610bd844 ("rcu: Suppress sparse warnings for rcu_dereference_raw()") ? Regards.