From: Salam Noureddine <noureddine@arista.com>
To: Michael Chan <michael.chan@broadcom.com>
Cc: Network Development <netdev@vger.kernel.org>,
"michael.chan@broadcom.com" <mchan@broadcom.com>,
"prashant.sreedharan@broadcom.com" <prashant@broadcom.com>,
Siva Reddy Kallam <siva.kallam@broadcom.com>
Subject: Re: Null pointer dereference in tg3_poll_work running linux-3.4
Date: Tue, 28 Mar 2017 15:12:43 -0700 [thread overview]
Message-ID: <CAO7SqHB5rLKGoVKAifiggDEA1itQNmy7qPVyYht47AYqvNdN6A@mail.gmail.com> (raw)
In-Reply-To: <CACKFLinE3PYyQwcF+CYAcJF=wFz6V58DHWF45WVof+JUn0g8dQ@mail.gmail.com>
On Tue, Mar 28, 2017 at 11:53 AM, Michael Chan
<michael.chan@broadcom.com> wrote:
> I don't remember any bug fixes related to this logic. One possibility
> is that there is DMA corruption and we are getting a bad opaque value.
> If you have the core dump, it will be useful to look at the receive
> completion ring. These opaque values are simple index values and
> should be in sequence.
Unfortunately I don't have a core dump, this has happened around 5
times on boxes that have been up between 2 and 7 months. So it
seems extremely rare. So far, the only information I have is the
stack trace.
prev parent reply other threads:[~2017-03-28 22:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-28 18:32 Null pointer dereference in tg3_poll_work running linux-3.4 Salam Noureddine
2017-03-28 18:53 ` Michael Chan
2017-03-28 22:12 ` Salam Noureddine [this message]
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