daemon_init() calls closeall() which closes all fd's >= 4. This causes rpc.gssd to fail when it's configured to use the gssproxy interposer plugin (via "use-gss-proxy=1" in nfs.conf or GSS_USE_PROXY="yes" in the environment) *and* libtirpc debugging is enabled (i.e. at least one "-r" on the command line): 1. During startup if rpc debugging is enabled then libtirpc_set_debug() is called, which calls openlog() which consumes fd 3. 2. If the gssproxy interposer plugin is enabled then when gssd_check_mechs() is called, a socket is created (fd 4) and connected to /var/lib/gssproxy/default.sock. The fd is stored internally in a struct gpm_ctx. 3. daemon_init() runs and closes all fd's >= 4. 4. event_init() runs which calls epoll_create() which returns an epoll fd of 4. 5. Later when handling an upcall, gssd calls gssd_acquire_krb5_cred() which winds up closing the gpm_ctx->fd which was 4. 6. event_dispatch() calls epoll_wait() with epfd=4, and -EBADF is returned. gssd logs the message ""ERROR: event_dispatch() returned!" and exits. The solution is to call daemon_init() earlier. Signed-off-by: Scott Mayhew <smayhew@xxxxxxxxxx> --- utils/gssd/gssd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/utils/gssd/gssd.c b/utils/gssd/gssd.c index 19ad4da..c38dedb 100644 --- a/utils/gssd/gssd.c +++ b/utils/gssd/gssd.c @@ -1020,11 +1020,11 @@ main(int argc, char *argv[]) "support setting debug levels\n"); #endif + daemon_init(fg); + if (gssd_check_mechs() != 0) errx(1, "Problem with gssapi library"); - daemon_init(fg); - event_init(); pipefs_dir = opendir(pipefs_path); -- 2.17.2
