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CIFS: Fix null pointer deref during read resp processing
Currently during receiving a read response mid->resp_buf can be NULL when it is being passed to cifs_discard_remaining_data() from cifs_readv_discard(). Fix it by always passing server->smallbuf instead and initializing mid->resp_buf at the end of read response processing. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com> CC: Stable <stable@vger.kernel.org> Acked-by: Sachin Prabhu <sprabhu@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
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