Bug 617614

Summary:	Samba client packet signature check error
Product:	Red Hat Enterprise Linux 6	Reporter:	Dmitri Pal <dpal>
Component:	samba	Assignee:	Guenther Deschner <gdeschner>
Status:	CLOSED DUPLICATE	QA Contact:	Ales Zelinka <azelinka>
Severity:	medium	Docs Contact:
Priority:	low
Version:	6.0	CC:	azelinka, gdeschner, jlayton, ssorce, vrulev
Target Milestone:	rc
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	617482	Environment:
Last Closed:	2011-02-04 10:56:55 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	617482
Bug Blocks:

Description Dmitri Pal 2010-07-23 14:44:45 UTC

+++ This bug was initially created as a clone of Bug #617482 +++

Description of problem:
I'm using fusesmb with options large_read and big_writes. When I ties to copy file to network share of windows server, which requires packet signing (Microsoft network server: Digitally sign communications = Enabled), copying fails and only 32KB of file copied. Strarting fusesmb with debug option showed me error:

unique: 652, opcode: WRITE (16), nodeid: 79, insize: 32848
write[162498752] 32768 bytes to 0 flags: 0x8001
smb_signing_good: BAD SIG: seq 1
SMB Signature verification failed on incoming packet!
   write[162498752] 16384 bytes to 0
   unique: 652, success, outsize: 24
unique: 653, opcode: WRITE (16), nodeid: 79, insize: 16464
write[162498752] 16384 bytes to 16384 flags: 0x8001
   unique: 653, error: -22 (Invalid argument), outsize: 16
unique: 654, opcode: FLUSH (25), nodeid: 79, insize: 64
   unique: 654, error: -38 (Function not implemented), outsize: 16
unique: 655, opcode: RELEASE (18), nodeid: 79, insize: 64
release[162498752] flags: 0x8001
   unique: 655, success, outsize: 16

If size of file is less than 32KB copy process vents OK.
When I switches packet signing off copy process vents OK.
When I mounts fusesmb without big_writes copy process vents OK too.

Same behaviour I observes if I copies files in KDE's dolphin file manager. 


Version-Release number of selected component (if applicable):
libsmbclient-3.5.4
samba-client-3.5.4

How reproducible:


Steps to Reproduce:
1. Turn on mandatory packet signing on windows server (Microsoft network server: Digitally sign communications (always) = Enabled in security policy/security options).
2. Mount windows shares using fusesmb -o large_read,big_writes or connect to share via dolphin.
3. Try to copy file (size > 32KB) to share.
  
Actual results:
Error occured and only 32KB of file copied.

Expected results:
File will copied OK.

Additional info:
Problem seems related to write segment size.