Re: [Bugme-new] [Bug 33102] New: File's copied from client->linux server only copy 1st 64K data; rest is lost

Re: [Bugme-new] [Bug 33102] New: File's copied from client->linux server only copy 1st 64K data; rest is lost

[Andrew Morton]

(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

On Mon, 11 Apr 2011 22:12:41 GMT
bugzilla-daemon@bugzilla.kernel.org wrote:

> https://bugzilla.kernel.org/show_bug.cgi?id=33102
> 
>            Summary: File's copied from client->linux server only copy 1st
>                     64K data;rest is lost
>            Product: Networking
>            Version: 2.5
>     Kernel Version: 2.6.38.2
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: blocking
>           Priority: P1
>          Component: IPV4
>         AssignedTo: shemminger@linux-foundation.org
>         ReportedBy: lkml@tlinx.org
>         Regression: Yes

Seems to be a 2.6.37->2.6.38 regression.

> 
> Created an attachment (id=54112)
>  --> (https://bugzilla.kernel.org/attachment.cgi?id=54112)
> config file
> 
> I've run into a problem copying a 3.6M file from a Win7 client to
> the linux server via cifs.
> 
> 
> Under 2.6.38.2, it only copies the first 64K (exactly) and the
> client gets a write error.
> 
> Using wireshark, in the success case, after the client sends the first
> 64K, the server response with 4 acks  each advertising a Window
> size of ~48K, followed by an SMB packet acknowledging the first 64K, w/info:
>   "WRITE AndX Request, 65536 bytes".
> 
> In the fail case, the server responds with 4 acks, but in each of the
> 4 ACKS, it's advertising strange window sizes of 881, 1161, 1441 1721
> and then responds with a faulty SMB packet w/info:
>   "[TCP Retransmission] Trans2 Response<unknown>"
>  Under the Trans2 section it says:
> 
>   Subcommand: <Unknown> since request packet wasn't seen.
> 
> 
> ----
> 
> I originally upgraded from 2.6.35.7 -> 2.6.38.2 and encountered this
> prob, so successively tried the 26.35.7 config w/2.6.36, 37, 38 and finally
> 38.1 -- they all work.
> 
> The same config on 2.6.38.2 fails as described above.
> 
> 
> Config attached.
> 

Re: [Bugme-new] [Bug 33102] New: File's copied from client->linux server only copy 1st 64K data; rest is lost

[Linda Walsh]

Andrew Morton wrote:
> (switched to email.  Please respond via emailed reply-to-all, not via the
> bugzilla web interface).
>
> On Mon, 11 Apr 2011 22:12:41 GMT
> bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org wrote:
>
>   
>> https://bugzilla.kernel.org/show_bug.cgi?id=33102
>>
>>            Summary: File's copied from client->linux server only copy 1st
>>                     64K data;rest is lost
>>            Product: Networking
>>            Version: 2.5
>>     Kernel Version: 2.6.38.2
>>           Platform: All
>>         OS/Version: Linux
>>               Tree: Mainline
>>             Status: NEW
>>           Severity: blocking
>>           Priority: P1
>>          Component: IPV4
>>         AssignedTo: shemminger-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org
>>         ReportedBy: lkml-gT3AUAsYRbTYtjvyW6yDsg@public.gmane.org
>>         Regression: Yes
>>     
>
> Seems to be a 2.6.37->2.6.38 regression.
>
> ----------

Not exactly -- Please note -- I tried both 2.6.38(.0) and 2.6.38.1.

They both work.

Re: [Bugme-new] [Bug 33102] New: File's copied from client->linux server only copy 1st 64K data; rest is lost

[Steve French]

On Mon, Apr 11, 2011 at 5:41 PM, Linda Walsh <lkml-gT3AUAsYRbTYtjvyW6yDsg@public.gmane.org> wrote:
>
> Andrew Morton wrote:
>>
>> (switched to email.  Please respond via emailed reply-to-all, not via the
>> bugzilla web interface).
>>
>> On Mon, 11 Apr 2011 22:12:41 GMT
>> bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org wrote:
>>>
>>> https://bugzilla.kernel.org/show_bug.cgi?id=33102
>>>
>>>           Summary: File's copied from client->linux server only copy 1st
>>>                    64K data;rest is lost
>>>           Product: Networking
>>>           Version: 2.5
>>>    Kernel Version: 2.6.38.2
>>>          Platform: All
>>>        OS/Version: Linux
>>>              Tree: Mainline
>>>            Status: NEW
>>>          Severity: blocking
>>>          Priority: P1
>>>         Component: IPV4
>>>        AssignedTo: shemminger-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org
>>>        ReportedBy: lkml-gT3AUAsYRbTYtjvyW6yDsg@public.gmane.org
>>>        Regression: Yes
>>>
>>
>> Seems to be a 2.6.37->2.6.38 regression.
>>
>> ----------
>
> Not exactly -- Please note -- I tried both 2.6.38(.0) and 2.6.38.1.
>
> They both work.

Any chance that we could get a wireshark trace of the failure?

https://wiki.samba.org/index.php/Capture_Packets

gives instructions.   There may also be useful information on
network stack failures returned in the samba log
(often named smbd.log).



-- 
Thanks,

Steve