On Thu, Nov 29, 2018 at 6:52 PM Liu, Wenlong <liuwl.fnst@xxxxxxxxxxxxxx> wrote: > m3ulcb:/opt/kselftest/seccomp# ./seccomp_bpf 64 > [ RUN ] global.get_metadata > seccomp_bpf.c:2914:global.get_metadata:Expected sizeof(md) (16) == ptrace(0x420d, pid, sizeof(md), &md) (-1) > global.get_metadata: Test terminated by assertion > [ FAIL ] global.get_metadata > > --- > Although I am not so familiar with SECCOMP and BPF, I checked some related documents and codes. > About the failures above, what the most confused me is that why it always give ENOSYS. > > Am I missing something? > Thanks in advance. > > PS: > I didn't run "make kselftest-merge" before compiling the kernel that I'm using. > > --- > The Test Environment: > - Kernel version: v4.14.0 Hi! It appears you're attempting to use a newer seccomp selftest on an older kernel. That isn't a supported way to test seccomp. You'll need to build 4.14's seccomp_bpf test binary and run it instead. -- Kees Cook
