This morning I came across a daemon that was apparently hanging on select() - when I attached an strace: # strace -p 836 Process 836 attached - interrupt to quit select(6, [4 5], [], NULL, NULL) = -1 EBADF (Bad file descriptor) time(NULL) = 1470735061 stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=1920, ...}) = 0 send(3, "<20>Aug 9 11:31:01 bwbemag[836]"..., 79, MSG_NOSIGNAL) = -1 ECONNREFUSED (Connection refused) close(3) = 0 socket(PF_FILE, SOCK_DGRAM, 0) = 3 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 connect(3, {sa_family=AF_FILE, path="/dev/log"}, 110) = 0 send(3, "<20>Aug 9 11:31:01 bwbemag[836]"..., 79, MSG_NOSIGNAL) = 79 close(5) = -1 EBADF (Bad file descriptor) close(5) = -1 EBADF (Bad file descriptor) futex(0x804e3a4, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x804e36c, 0) = 1 futex(0xb7e06bd8, FUTEX_WAIT, 837, NULL) = 0 time(NULL) = 1470735061 stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=1920, ...}) = 0 send(3, "<21>Aug 9 11:31:01 bwbemag[836]"..., 53, MSG_NOSIGNAL) = 53 exit_group(0) = ? Process 836 detached Does anyone have a suggestion as to why this was hanging instead of just having exited long ago? I think it's been hanging on that select() for days or even months. -- Per Jessen, Zürich (18.2°C) http://www.dns24.ch/ - your free DNS host, made in Switzerland. -- To unsubscribe, e-mail: opensuse-programming+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-programming+owner@opensuse.org