Commit 66f09ca7 authored by Trond Myklebust's avatar Trond Myklebust Committed by J. Bruce Fields

nfs: do not start the callback thread until we set rqstp->rq_task

This fixes an Oopsable race when starting up the callback server.
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
Reviewed-by: default avatarJeff Layton <jlayton@primarydata.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent d4e89902
......@@ -235,7 +235,7 @@ static int nfs_callback_start_svc(int minorversion, struct rpc_xprt *xprt,
cb_info->serv = serv;
cb_info->rqst = rqstp;
cb_info->task = kthread_run(callback_svc, cb_info->rqst,
cb_info->task = kthread_create(callback_svc, cb_info->rqst,
"nfsv4.%u-svc", minorversion);
if (IS_ERR(cb_info->task)) {
ret = PTR_ERR(cb_info->task);
......@@ -245,6 +245,7 @@ static int nfs_callback_start_svc(int minorversion, struct rpc_xprt *xprt,
return ret;
}
rqstp->rq_task = cb_info->task;
wake_up_process(cb_info->task);
dprintk("nfs_callback_up: service started\n");
return 0;
}
......
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