4.20-stable review patch. If anyone has any objections, please let me know.
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From: Pavel Shilovsky pshilov@microsoft.com
commit 33fa5c8b8a7dbe6353a56eaa654b790348890d42 upstream.
Currently we reset the number of total credits granted by the server to 1 if the server didn't grant us anything int the response. This violates the SMB3 protocol - we need to trust the server and use the credit values from the response. Fix this by removing the corresponding code.
Signed-off-by: Pavel Shilovsky pshilov@microsoft.com Signed-off-by: Steve French stfrench@microsoft.com CC: Stable stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/cifs/transport.c | 2 -- 1 file changed, 2 deletions(-)
--- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -892,8 +892,6 @@ compound_send_recv(const unsigned int xi for (i = 0; i < num_rqst; i++) if (midQ[i]->resp_buf) credits += ses->server->ops->get_credits(midQ[i]); - if (!credits) - credits = 1;
for (i = 0; i < num_rqst; i++) { if (rc < 0)