nfsd: Fix svc_xprt refcnt leak when setup callback client failed

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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>

...

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Xiyu Yang 2020-05-25 22:15:41 +08:00 • committed by J. Bruce Fields

parent 24c5efe41c

commit a4abc6b12e

1 changed files with 2 additions and 0 deletions

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fs/nfsd/nfs4callback.c

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