diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/x86/syscall_nt.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/tools/testing/selftests/x86/syscall_nt.c b/tools/testing/selftests/x86/syscall_nt.c index 970e5e14d96d..a108b80dd082 100644 --- a/tools/testing/selftests/x86/syscall_nt.c +++ b/tools/testing/selftests/x86/syscall_nt.c @@ -81,5 +81,16 @@ int main(void) printf("[RUN]\tSet NT|AC|TF and issue a syscall\n"); do_it(X86_EFLAGS_NT | X86_EFLAGS_AC | X86_EFLAGS_TF); + /* + * Now try DF. This is evil and it's plausible that we will crash + * glibc, but glibc would have to do something rather surprising + * for this to happen. + */ + printf("[RUN]\tSet DF and issue a syscall\n"); + do_it(X86_EFLAGS_DF); + + printf("[RUN]\tSet TF|DF and issue a syscall\n"); + do_it(X86_EFLAGS_TF | X86_EFLAGS_DF); + return nerrs == 0 ? 0 : 1; } |