[Bug 259440] iSCSI initiator: Review for robustness (was: panic: isc->receive_pdu != NULL)

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 259440] iSCSI initiator: panic: isc->receive_pdu != NULL"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 26 Oct 2021 18:31:15 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259440

Ed Maste <emaste@freebsd.org> changed:

           What    |Removed                     |Added
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           Assignee|bugs@FreeBSD.org            |emaste@freebsd.org

--- Comment #4 from Ed Maste <emaste@freebsd.org> ---
(In reply to John Baldwin from comment #3)
> I do think one panic I've seen is that there might be some cases (bad header
> CRC?) where it can try to abort the connection without freeing the current WIP
> PDU but due to data already in flight on the socket it tries to process another
> PDU and trips over the WIP PDU.  In fact, I think that's the panic you got
> here.

Yes this is the panic we encountered and I believe your proposed patch will
solve it. Since you're confident in the initiator's robustness via review or
testing I think there's nothing to do for this PR beyond the patch.

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