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Bug 617482 - Samba client packet signature check error
Samba client packet signature check error
Product: Fedora
Classification: Fedora
Component: samba (Show other bugs)
i386 Linux
low Severity medium
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Assigned To: Guenther Deschner
Fedora Extras Quality Assurance
Depends On:
Blocks: 617614
  Show dependency treegraph
Reported: 2010-07-23 04:34 EDT by Vladimir Rulev
Modified: 2011-03-19 06:27 EDT (History)
3 users (show)

See Also:
Fixed In Version: samba-3.5.8-74.fc13
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 617614 (view as bug list)
Last Closed: 2011-03-19 06:27:17 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Vladimir Rulev 2010-07-23 04:34:21 EDT
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):

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.
Comment 1 Fedora Admin XMLRPC Client 2010-10-08 10:43:33 EDT
This package has changed ownership in the Fedora Package Database.  Reassigning to the new owner of this component.
Comment 2 Guenther Deschner 2010-11-01 11:40:21 EDT
Can you please provide a packet trace of this issue ?
Comment 3 Guenther Deschner 2010-12-08 07:37:27 EST
Is this fixed with the most recent samba update we shipped ?
Comment 4 Fedora Update System 2011-03-11 07:43:49 EST
samba-3.5.8-74.fc13 has been submitted as an update for Fedora 13.
Comment 5 Fedora Update System 2011-03-19 06:26:47 EDT
samba-3.5.8-74.fc13 has been pushed to the Fedora 13 stable repository.  If problems still persist, please make note of it in this bug report.

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