linux-kernel - Re: mthca double free irqs

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Message-ID: <adafxe51pz9.fsf@cisco.com>
Date:	Fri, 12 Jun 2009 07:33:30 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	Yinghai Lu <yhlu.kernel@...il.com>
Cc:	"Barnes\, Jesse" <jesse.barnes@...el.com>,
	Matthew Wilcox <matthew@....cx>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, general@...ts.openfabrics.org,
	linux-kernel@...r.kernel.org
Subject: Re: mthca double free irqs

By the way, can you try this with the ib_mthca module option
"msi_x=0" -- because I see

 > [  606.538429] ib_mthca 0000:c4:00.0: NOP command failed to generate
 > interrupt (IRQ 234).
 > [  606.543348] ib_mthca 0000:c4:00.0: Trying again with MSI-X disabled.

But perhaps the fallback to non-MSI-X in the driver is messing things
up.  Also you have:

 > [  606.222053] ib_mthca 0000:c4:00.0: HCA FW version 4.6.002 is old
 > (4.8.200 is current).

So updating the HCA firmware likely wouldn't hurt.

 - R.
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