Bug 617614 - Samba client packet signature check error
Samba client packet signature check error
Status: CLOSED DUPLICATE of bug 654426
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: samba (Show other bugs)
i386 Linux
low Severity medium
: rc
: ---
Assigned To: Guenther Deschner
Ales Zelinka
Depends On: 617482
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Reported: 2010-07-23 10:44 EDT by Dmitri Pal
Modified: 2011-03-02 08:49 EST (History)
5 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 617482
Last Closed: 2011-02-04 05:56:55 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2011:0582 normal SHIPPED_LIVE samba bug fix and enhancement update 2011-05-19 05:37:35 EDT

  None (edit)
Description Dmitri Pal 2010-07-23 10:44:45 EDT
+++ 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):

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.

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