Commit a914722f authored Jun 10, 2014 by Mateusz Guzik Committed by Trond Myklebust Jun 10, 2014

NFS: populate ->net in mount data when remounting



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
Cc: stable@vger.kernel.org # 3.4+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

parent c5e20cb7

fs/nfs/super.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -2260,6 +2260,7 @@ 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);

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