netdev - Fw: [Bug 15517] New: big file transfers stall and break network

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Message-ID: <20100311084630.64b85696@nehalam>
Date:	Thu, 11 Mar 2010 08:46:30 -0800
From:	Stephen Hemminger <shemminger@...tta.com>
To:	netdev@...r.kernel.org
Subject: Fw: [Bug 15517] New: big file transfers stall and break network



Begin forwarded message:

Date: Thu, 11 Mar 2010 14:40:12 GMT
From: bugzilla-daemon@...zilla.kernel.org
To: shemminger@...ux-foundation.org
Subject: [Bug 15517] New: big file transfers stall and break network


http://bugzilla.kernel.org/show_bug.cgi?id=15517

           Summary: big file transfers stall and break network
           Product: Networking
           Version: 2.5
    Kernel Version: 2.6.32.9
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: IPV4
        AssignedTo: shemminger@...ux-foundation.org
        ReportedBy: conrad_s@...ketmail.com
        Regression: Yes


Created an attachment (id=25475)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=25475)
lspci output, from working 2.6.31

Upgrading to kernel 2.6.32.9 on a 64-bit machine (Fedora 12,
2.6.32.9-67.fc12.x86_64) caused breakage in transfer of large files over SSH
and SMB, followed by breaking network access.

To reproduce, copy a large file (> 900 MB) using SSH or SMB (mounted either
directly via "mount" or indirectly via "gfvs / nautilus").  Copy stalls and
network becomes unusable (e.g. can't ssh to any other host).

Previous kernel 2.6.31.12 (Fedora 12, 2.6.31.12-174.2.22.fc12.x86_64) works
fine.

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