Hi Tao
On 26/09/2021 11:35, Tao Zhang wrote:
clang-12 fails to build the etm4x driver with -fsanitize=array-bounds, where it decides to unroll certain loops in a way that result in a C variable getting put into an inline assembly.
Search this build failure and find this is a known issue and there has been a mail thread discussing it. https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210429145752.3... According to the modification suggestions of this mail thread, coresight infrastucture has already provided another API that can replace the function that caused the error.
Used here "csdev_access_read32" to replace the original API "etm4x_relaxed_read32".
This patch applies to coresight/next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
Signed-off-by: Tao Zhang quic_taozha@quicinc.com
Thanks for picking up the patch. Please could you convert all the other variable indexed register access too ? That would save us spinning up patches for fixing those individual cases whenever the compiler decides to change its behavior.
Suzuki