While building selftests the following warnings were noticed for x86_64 architecture on Linux stable v5.15.13 kernel. metadata: git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git git commit: 734eb1fd2073f503f5c6b44f1c0d453ca6986b84 git describe: v5.15.13 toolchain": gcc-11 kernel-config: https://builds.tuxbuild.com/23HFo8abXIL6i4FFfSYiJlqAYMW/config x86_64-linux-gnu-gcc -m64 -o \ /home/tuxbuild/.cache/tuxmake/builds/current/kselftest/x86/test_vsyscall_64 \ -O2 -g -std=gnu99 -pthread -Wall -no-pie \ -DCAN_BUILD_64 test_vsyscall.c helpers.h -lrt -ldl test_vsyscall.c: In function 'test_process_vm_readv': test_vsyscall.c:500:22: warning: '__builtin_memcmp_eq' specified bound 4096 exceeds source size 0 [-Wstringop-overread] 500 | if (!memcmp(buf, (const void *)0xffffffffff600000, 4096)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> Build link: https://builds.tuxbuild.com/23HFo8abXIL6i4FFfSYiJlqAYMW/ # To install tuxmake on your system globally: # sudo pip3 install -U tuxmake tuxmake --runtime podman --target-arch x86_64 --toolchain gcc-11 \ --kconfig https://builds.tuxbuild.com/23HFo8abXIL6i4FFfSYiJlqAYMW/config \ cpupower headers kernel kselftest kselftest-merge modules -- Linaro LKFT https://lkft.linaro.org
