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glibc 2.31 calls clock_nanosleep when its nanosleep function is used. So the restart_syscall fails after that. In order to deal with it, we trace clock_nanosleep and nanosleep. Then we check for either. This works just fine on systems with both glibc 2.30 and glibc 2.31, whereas it failed before on a system with glibc 2.31. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>