[linux-cifs-client] system lockup copying files to cifs (2.6.9-mm1)

[Gilles Hamel]

Hello,

I'm using a fresh kernel 2.6.9-mm1 with cifs module.

I have found the following thread related to my problem :
http://groups.google.com/groups?hl=en&lr=&threadm=fa.ifl2rf5.2k238b%40ifi.uio.no&rnum=1&prev=/groups%3Fq%3Dcifs%2Blinux%2B%2BNo%2Btask%2Bto%2Bwake,%2Bunknown%2Bframe%2Brcvd%26hl%3Den%26lr%3D%26selm%3Dfa.ifl2rf5.2k238b%2540ifi.uio.no%26rnum%3D1

When I backup my system on cifs filesystem, my system hang randomly. The 
hang happens rarely, about one time by 10Gb.

In the syslog file, the kernel says :

Nov 28 06:20:02 w2kzzaxxx kernel:  CIFS VFS: sends on sock deee9800 
stuck for 30 seconds
Nov 28 06:20:02 w2kzzaxxx kernel:  CIFS VFS: Error -11 sending data on 
socket to server.
Nov 28 06:20:02 w2kzzaxxx kernel:  CIFS VFS: sends on sock deee9800 
stuck for 30 seconds
Nov 28 06:20:02 w2kzzaxxx kernel:  CIFS VFS: Error -11 sending data on 
socket to server.
... repeated tenths times
and :
Nov 28 06:20:02 w2kzzaxxx kernel:  CIFS VFS: No task to wake, unknown 
frame rcvd!

then, the system hang.

I don't use smbf, because my tar.gz files size reach 2Gb.
On the w2k3 file server side, no error in events log.

Here is my cifs config :

[root at w2kzzaxxx cifs]# grep . *
DebugData:Display Internal CIFS Data Structures for Debugging
DebugData:---------------------------------------------------
DebugData:Servers:
DebugData:1) Name: xx.xx.xx.xx  Domain: xxxx Mounts: 1 ServerOS: Windows 
5.0
DebugData:      ServerNOS: Windows 2000 LAN Manager     Capabilities: 0xf3fd
DebugData:      SMB session status: 1   TCP status: 1
DebugData:      Local Users To Server: 1 SecMode: 0x3 Req Active: 0
DebugData:MIDs:
DebugData:2) Name: xx.xx.xx.xx  Domain: zzzz Mounts: 1 ServerOS: Windows 
Server 2003 3790
DebugData:      ServerNOS: Windows Server 2003 5.2      Capabilities: 
0x1f3fd
DebugData:      SMB session status: 1   TCP status: 1
DebugData:      Local Users To Server: 1 SecMode: 0x3 Req Active: 0
DebugData:MIDs:
DebugData:Shares:
DebugData:1) \\xxxxxx\BCLogs Uses: 1 Type: NTFS Characteristics: 0x20 
Attributes: 0x700ff
DebugData:PathComponentMax: 255 Status: 1 type: DISK
DebugData:2) \\yyyyyyy\personal Uses: 1 Type: NTFS Characteristics: 0x20 
Attributes: 0x700ff
DebugData:PathComponentMax: 255 Status: 1 type: DISK
ExtendedSecurity:0
LinuxExtensionsEnabled:1
LookupCacheEnabled:1
MultiuserMount:0
NTLMV2Enabled:0
OplockEnabled:1
PacketSigningEnabled:1
QuotaEnabled:0
cifsFYI:0
traceSMB:0

Is it a known bug ?