7b3631a2e1
commit 7c201739beef1a586d806463f1465429cdce34c5 upstream. With Clang version 16+, -fsanitize=thread will turn memcpy/memset/memmove calls in instrumented functions into __tsan_memcpy/__tsan_memset/__tsan_memmove calls respectively. Add these functions to the core KCSAN runtime, so that we (a) catch data races with mem* functions, and (b) won't run into linker errors with such newer compilers. Cc: stable@vger.kernel.org # v5.10+ Signed-off-by: Marco Elver <elver@google.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> [ elver@google.com: adjust check_access() call for v5.15 and earlier. ] Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>