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Date:      Thu, 21 Apr 2016 15:19:13 +0100
From:      Justin Clift <justin@postgresql.org>
To:        freebsd-infiniband@freebsd.org
Subject:   Re: Kernel panic (page fault) on 10.3-STABLE with IB & VIMAGE modules
Message-ID:  <E9A17D1C-E1D4-4146-9E0D-63AED575A34E@postgresql.org>
In-Reply-To: <210EB5F8-DEC1-4F5E-9CC7-003AF3784B50@postgresql.org>
References:  <210EB5F8-DEC1-4F5E-9CC7-003AF3784B50@postgresql.org>

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On 21 Apr 2016, at 15:16, Justin Clift <justin@postgresql.org> wrote:
> Hi all,
>=20
> Have been hitting a kernel panic (page fault) with the IB modules =
loaded
> on 10.3-STABLE.  (compiled multiple times over the last few days, all =
panicing)
>=20
> Spent several hours narrowing down the cause, and it's definitely a =
bad
> interaction between the IB modules (unsure which) + the "VIMAGE" =
module.

Forgot to mention, it's 100% reproducible, and very easily.  All that =
needs
to be done is have an interface (eg ib0) be in IPoIB mode with an IP =
assigned.
(eg 10.10.100.1)

When that interface is pinged from another host (eg "ping 10.10.100.1") =
the
kernel panic immediately happens.  Every time. ;)

+ Justin

--
"My grandfather once told me that there are two kinds of people: those
who work and those who take the credit. He told me to try to be in the
first group; there was less competition there."
- Indira Gandhi




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