netdev - RE: nvmet with cxgb4 is broken in v4.12-rc1

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Date:   Wed, 17 May 2017 14:22:23 -0500
From:   "Steve Wise" <swise@...ngridcomputing.com>
To:     "'Logan Gunthorpe'" <logang@...tatee.com>,
        "'Arjun Vynipadath'" <arjun@...lsio.com>
Cc:     "'Casey Leedom'" <leedom@...lsio.com>,
        "'Sagi Grimberg'" <sagi@...mberg.me>, <netdev@...r.kernel.org>,
        <linux-nvme@...ts.infradead.org>,
        "'Stephen Bates'" <sbates@...thlin.com>,
        "'Ganesh Goudar'" <ganeshgr@...lsio.com>,
        "'David S. Miller'" <davem@...emloft.net>,
        "'Manoj Kumar Malviya'" <manojmalviya@...lsio.com>
Subject: RE: nvmet with cxgb4 is broken in v4.12-rc1

> Hello,
> 
> Another cxgb4 bug report for you. Testing nvmet over our T62100-LP-CR
> stopped working in v4.12-rc1. We are seeing two oopses: a general
> protection fault in nvmet_rdma_free_rsps and a WQ_MEM_RECLAIM warning.
> These occur after a suspect cxgb4 message. Please see the full dmesg log
> which is attached.
> 
> > [   41.093555] cxgb4 0000:07:00.4: AE qpid 1034 opcode 0 status 0x1 type 1 len
> 0x0 wrid.hi 0x0 wrid.lo 0x0
> > [   41.093673] nvmet_rdma: received IB QP event: QP access error (3)
> 
> I've bisected to find this commit is the culprit:
> 
> bb58d079: cxgb4: Update IngPad and IngPack values
> 
> A bisect log is also attached. Reverting that commit also fixes the issue.
> 

Hey Logan, this is with 1.16.43.0 firmware? 

Hey Casey/Manoj, is there some other sw or fw change missing for the ingpad change?  Or maybe something needed in the firmware config file?

Thanks,

Steve.