From 78a8d7c8ca3f0cb5cd2a276c6fc17c8c006d0b3c Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 19 Jul 2010 16:50:05 -0400 Subject: [PATCH] nfsd: fix error handling when starting nfsd with rpcbind down The refcounting for nfsd is a little goofy. What happens is that we create the nfsd RPC service, attach sockets to it but don't actually start the threads until someone writes to the "threads" procfile. To do this, __write_ports_addfd will create the nfsd service and then will decrement the refcount when exiting but won't actually destroy the service. This is fine when there aren't errors, but when there are this can cause later attempts to start nfsd to fail. nfsd_serv will be set, and that causes __write_versions to return EBUSY. Fix this by calling svc_destroy on nfsd_serv when this function is going to return error. Signed-off-by: Jeff Layton Signed-off-by: J. Bruce Fields --- fs/nfsd/nfsctl.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 508941c23af7..af7469efc61c 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -950,14 +950,18 @@ static ssize_t __write_ports_addfd(char *buf) return err; err = lockd_up(); - if (err != 0) - goto out; + if (err != 0) { + svc_destroy(nfsd_serv); + return err; + } err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT); - if (err < 0) + if (err < 0) { lockd_down(); + svc_destroy(nfsd_serv); + return err; + } -out: /* Decrease the count, but don't shut down the service */ nfsd_serv->sv_nrthreads--; return err;