From: Bernhard Walle <bernhard@bwalle.de>
To: Haiyang Zhang <haiyangz@microsoft.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>, linux-kernel@vger.kernel.org
Subject: Regression in hyperv network driver in 3.14
Date: Tue, 27 May 2014 13:10:03 +0200 [thread overview]
Message-ID: <20140527111003.GA2214@kepler.fritz.box> (raw)
Hello,
using a 3.14 kernel in a Linux VM running on HyperV (Windows Server 2008
R2) we get following error:
hv_netvsc: hv_netvsc channel opened successfully
hv_netvsc vmbus_0_9 (unregistered net_device): Unable to complete receive buffer initialization with NetVsp - status 2
hv_netvsc vmbus_0_9 (unregistered net_device): unable to connect to NetVSP - -22
hv_netvsc vmbus_0_9 (unregistered net_device): unable to add netvsc device (ret -22)
hv_netvsc: probe of vmbus_0_9 failed with error -22
Bisecting the problem shows that commit
b679ef73edc251f6d200a7dd2396e9fef9e36fc3 is responsible. Reverting it
fixes the issue. Even only changing NETVSC_RECEIVE_BUFFER_SIZE to 2M
fixes the issue!
The virtual machine has 2 GiB of memory and 4 CPUs.
Can I provide more information to track down the problem?
Regards,
Bernhard
next reply other threads:[~2014-05-27 11:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-27 11:10 Bernhard Walle [this message]
2014-05-27 13:43 ` Regression in hyperv network driver in 3.14 KY Srinivasan
2014-05-27 14:42 ` Bernhard Walle
2014-05-27 15:22 ` Haiyang Zhang
2014-06-26 8:19 ` Non-FIXed in Linux Kernel v3.14.8 2014-06-16 Fw: hyperv: Change the receive buffer size for legacy hosts Re: Regression in hyperv network driver in 3.14 Fw: Debian Bug#748609: ( 3.14-0 : Hyper-V netvsc no networking) Victor Miasnikov
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