On Thu, Jan 06, 2022 at 02:55:53PM +0530, Naresh Kamboju wrote: > 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 Is this a new regression from 5.15.0? Is it also present on Linus's tree? thanks, greg k-h
