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Commit d4bda742 authored by Kinglong Mee's avatar Kinglong Mee Committed by Greg Kroah-Hartman
Browse files

nfsd/callback: Cleanup callback cred on shutdown 




[ Upstream commit f7d1ddbe7648af7460d23688c8c131342eb43b3a ]

The rpccred gotten from rpc_lookup_machine_cred() should be put when
state is shutdown.

Signed-off-by: default avatarKinglong Mee <kinglongmee@gmail.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0c92e732

fs/nfsd/nfs4callback.c

+8 −0
Original line number Diff line number Diff line
@@ -753,6 +753,14 @@ int set_callback_cred(void) 
	return 0;

}



void cleanup_callback_cred(void)

{

	if (callback_cred) {

		put_rpccred(callback_cred);

		callback_cred = NULL;

	}

}



static struct rpc_cred *get_backchannel_cred(struct nfs4_client *clp, struct rpc_clnt *client, struct nfsd4_session *ses)

{

	if (clp->cl_minorversion == 0) {

fs/nfsd/nfs4state.c

+6 −4
Original line number Diff line number Diff line
@@ -7012,23 +7012,24 @@ nfs4_state_start(void) 


	ret = set_callback_cred();

	if (ret)

		return -ENOMEM;

		return ret;



	laundry_wq = alloc_workqueue("%s", WQ_UNBOUND, 0, "nfsd4");

	if (laundry_wq == NULL) {

		ret = -ENOMEM;

		goto out_recovery;

		goto out_cleanup_cred;

	}

	ret = nfsd4_create_callback_queue();

	if (ret)

		goto out_free_laundry;



	set_max_delegations();



	return 0;



out_free_laundry:

	destroy_workqueue(laundry_wq);

out_recovery:

out_cleanup_cred:

	cleanup_callback_cred();

	return ret;

}
@@ -7086,6 +7087,7 @@ nfs4_state_shutdown(void) 
{

	destroy_workqueue(laundry_wq);

	nfsd4_destroy_callback_queue();

	cleanup_callback_cred();

}



static void

fs/nfsd/state.h

+1 −0
Original line number Diff line number Diff line
@@ -615,6 +615,7 @@ extern struct nfs4_client_reclaim *nfsd4_find_reclaim_client(const char *recdir, 
extern __be32 nfs4_check_open_reclaim(clientid_t *clid,

		struct nfsd4_compound_state *cstate, struct nfsd_net *nn);

extern int set_callback_cred(void);

extern void cleanup_callback_cred(void);

extern void nfsd4_probe_callback(struct nfs4_client *clp);

extern void nfsd4_probe_callback_sync(struct nfs4_client *clp);

extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *);