Messages in this thread Patch in this message | | | From | Jiri Slaby <> | Subject | [patch added to the 3.12 stable tree] NFS: populate ->net in mount data when remounting | Date | Fri, 18 Jul 2014 09:25:18 +0200 |
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From: Mateusz Guzik <mguzik@redhat.com>
This patch has been added to the 3.12 stable tree. If you have any objections, please let us know.
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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: Jiri Slaby <jslaby@suse.cz> --- fs/nfs/super.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/nfs/super.c b/fs/nfs/super.c index a03b9c6f9489..64940b5286db 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2197,6 +2197,7 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data) data->timeo = 10U * nfss->client->cl_timeout->to_initval / HZ; data->nfs_server.port = nfss->port; data->nfs_server.addrlen = nfss->nfs_client->cl_addrlen; + data->net = current->nsproxy->net_ns; memcpy(&data->nfs_server.address, &nfss->nfs_client->cl_addr, data->nfs_server.addrlen); -- 2.0.0
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