[linux-cifs-client] [PATCH] [CIFS] Prevent OOPs when mounting with remote prefixpath

[Igor Mammedov]

Managed to single out the part of  DFS root support from a big patch
with a little modification.
It will report error and fail to mount if perfixpath is on remote server.
As well it will not scare people off with a error 
'kernel BUG at fs/cifs/cifs_dfs_ref.c:274!'.


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Fixes OOPs with message 'kernel BUG at fs/cifs/cifs_dfs_ref.c:274!'.
Check if prefixpath in accessible while we are still in cifs_mount
and fail with reporting a error if we can't access prefixpath
(i.e. if prefixpath is located on another server)


Best regards,

-------------------------
Igor Mammedov,
niallain "at" gmail.com




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