FYI, we noticed the following commit (built with gcc-7): commit: 69d96519dbf0bfa1868dc8597d4b9b2cdeb009d7 ("selftests/bpf: convert socket_cookie test to sk storage") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master in testcase: kernel_selftests with following parameters: group: kselftests-00 test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel. test-url: https://www.kernel.org/doc/Documentation/kselftest.txt on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 4G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): If you fix the issue, kindly add following tag Reported-by: kernel test robot <rong.a.chen(a)intel.com&gt; # selftests: bpf: test_socket_cookie # libbpf: failed to create map (name: 'socket_cookies'): Invalid # argument # libbpf: failed to load object './socket_cookie_prog.o' # (test_socket_cookie.c:149: errno: Invalid argument) Failed to load # ./socket_cookie_prog.o # FAILED not ok 15 selftests: bpf: test_socket_cookie To reproduce: # build kernel cd linux cp config-5.2.0-rc2-00598-g69d9651 .config make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 prepare make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 modules_prepare make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 SHELL=/bin/bash make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 bzImage git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, Rong Chen