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 <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] # 3.4+ Signed-off-by: Trond Myklebust <[email protected]>
rtvt123 · Jun 10, 2014 · a914722 · a914722
1 parent c5e20cb
commit a914722
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
@@ -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);