tree 42dba531e3f504011b4e57b4e23cbf20c7a7a24c
parent 24c5efe41c29ee3e55bcf5a1c9f61ca8709622e8
author Xiyu Yang <xiyuyang19@fudan.edu.cn> 1590416141 +0800
committer J. Bruce Fields <bfields@redhat.com> 1590704100 -0400

nfsd: Fix svc_xprt refcnt leak when setup callback client failed

nfsd4_process_cb_update() invokes svc_xprt_get(), which increases the
refcount of the "c->cn_xprt".

The reference counting issue happens in one exception handling path of
nfsd4_process_cb_update(). When setup callback client failed, the
function forgets to decrease the refcnt increased by svc_xprt_get(),
causing a refcnt leak.

Fix this issue by calling svc_xprt_put() when setup callback client
failed.

Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>