On Tue, Jan 27, 2015 at 10:39 AM, Lemon Lam <alemonmk at gmail.com> wrote: > ? 2015/1/27 ?? 05:10, Nikos Mavrogiannopoulos ??: >> On Tue, Jan 27, 2015 at 10:01 AM, Lemon Lam <alemonmk at gmail.com> wrote: >>>> Do you use linux-namespaces or seccomp? If yes try disabling it. >>>> Otherwise please provide more information about your build. >>> I can confirm that disabling seccomp do get rid of the problem. >> Then, could you provide more information about your kernel version, >> the cpu architecture, and the output of "strace -f" of ocserv? > Kernel is Linode's customised 3.18.1-x86_64, but the OS is i386. > strace output is attached. As far as I understand the seccomp filter does prevent select() from being executed. Do you have the latest libseccomp in that platform?