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NFS: hard-code init_net for NFS callback transports

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In case of destroying mount namespace on child reaper exit, nsproxy is zeroed
to the point already. So, dereferencing of it is invalid.
This patch hard-code "init_net" for all network namespace references for NFS
callback services. This will be fixed with proper NFS callback
containerization.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Stanislav Kinsbursky
2012-06-01 13:55:47 +04:00
committed by J. Bruce Fields
parent cfaf025112
commit 12918b10d5
1 changed files with 5 additions and 6 deletions
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11
fs/nfs/callback.c
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@@ -17,7 +17,6 @@
#include <linux/kthread.h>
#include <linux/sunrpc/svcauth_gss.h>
#include <linux/sunrpc/bc_xprt.h>
#include <linux/nsproxy.h>
#include <net/inet_sock.h>
@@ -107,7 +106,7 @@ nfs4_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt)
{
int ret;
ret = svc_create_xprt(serv, "tcp", xprt->xprt_net, PF_INET,
ret = svc_create_xprt(serv, "tcp", &init_net, PF_INET,
nfs_callback_set_tcpport, SVC_SOCK_ANONYMOUS);
if (ret <= 0)
goto out_err;
@@ -115,7 +114,7 @@ nfs4_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt)
dprintk("NFS: Callback listener port = %u (af %u)\n",
nfs_callback_tcpport, PF_INET);
ret = svc_create_xprt(serv, "tcp", xprt->xprt_net, PF_INET6,
ret = svc_create_xprt(serv, "tcp", &init_net, PF_INET6,
nfs_callback_set_tcpport, SVC_SOCK_ANONYMOUS);
if (ret > 0) {
nfs_callback_tcpport6 = ret;
@@ -184,7 +183,7 @@ nfs41_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt)
* fore channel connection.
* Returns the input port (0) and sets the svc_serv bc_xprt on success
*/
ret = svc_create_xprt(serv, "tcp-bc", xprt->xprt_net, PF_INET, 0,
ret = svc_create_xprt(serv, "tcp-bc", &init_net, PF_INET, 0,
SVC_SOCK_ANONYMOUS);
if (ret < 0) {
rqstp = ERR_PTR(ret);
@@ -254,7 +253,7 @@ int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt)
char svc_name[12];
int ret = 0;
int minorversion_setup;
struct net *net = current->nsproxy->net_ns;
struct net *net = &init_net;
mutex_lock(&nfs_callback_mutex);
if (cb_info->users++ || cb_info->task != NULL) {
@@ -330,7 +329,7 @@ void nfs_callback_down(int minorversion)
cb_info->users--;
if (cb_info->users == 0 && cb_info->task != NULL) {
kthread_stop(cb_info->task);
svc_shutdown_net(cb_info->serv, current->nsproxy->net_ns);
svc_shutdown_net(cb_info->serv, &init_net);
svc_exit_thread(cb_info->rqst);
cb_info->serv = NULL;
cb_info->rqst = NULL;