diff mbox

[3.13,118/198] NFS: populate ->net in mount data when remounting

Message ID 1405459868-15089-119-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa July 15, 2014, 9:29 p.m. UTC 
3.13.11.5 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mateusz Guzik <mguzik@redhat.com>

commit a914722f333b3359d2f4f12919380a334176bb89 upstream.

Otherwise the kernel oopses when remounting with IPv6 server because
net is dereferenced in dev_get_by_name.

Use net ns of current thread so that dev_get_by_name does not operate on
foreign ns. Changing the address is prohibited anyway so this should not
affect anything.

Signed-off-by: Mateusz Guzik <mguzik@redhat.com>
Cc: linux-nfs@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 fs/nfs/super.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox

Patch

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 910ed90..05c3a6e 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2246,6 +2246,7 @@  nfs_remount(struct super_block *sb, int *flags, char *raw_data)
 	data->nfs_server.addrlen = nfss->nfs_client->cl_addrlen;
 	data->version = nfsvers;
 	data->minorversion = nfss->nfs_client->cl_minorversion;
+	data->net = current->nsproxy->net_ns;
 	memcpy(&data->nfs_server.address, &nfss->nfs_client->cl_addr,
 		data->nfs_server.addrlen);