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Date:      Fri, 26 Aug 2022 22:03:39 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 266054] panic: page fault in sys/ofed/drivers/infiniband/core/ib_cma.c:1060
Message-ID:  <bug-266054-7501-Yp6ojRKPBV@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-266054-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-266054-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266054

Mike Karels <karels@freebsd.org> changed:

           What    |Removed                     |Added
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                 CC|                            |karels@freebsd.org

--- Comment #4 from Mike Karels <karels@freebsd.org> ---
(In reply to Eric Joyner from comment #3)
> The tl;dr is that the V_in_loopback_mask variable (that gets accessed from within
> cma_loopback_addr via the ipv4 loopback check) got added in a previous commit
> but that RDMA code doesn't have the currvnet set, so the vnet that gets checked
> in V_in_loopback_mask is NULL and the kernel panics.

Ouch.  I hadn't anticipated this situation.  Shouldn't the default vnet be set
if nothing has changed it?

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