| From | Kamal Mostafa <> | Subject | [PATCH 3.13 118/198] NFS: populate ->net in mount data when remounting | Date | Tue, 15 Jul 2014 14:29:48 -0700 |
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3.13.11.5 -stable review patch. If anyone has any objections, please let me know.
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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 --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); -- 1.9.1
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