linux-kernel - Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2 vectors

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Message-ID: <20170815184403.GB4099@bhelgaas-glaptop.roam.corp.google.com>
Date:   Tue, 15 Aug 2017 13:44:03 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Meelis Roos <mroos@...ux.ee>
Cc:     sparclinux@...r.kernel.org, linux-pci@...r.kernel.org,
        qla2xxx-upstream@...gic.com,
        Linux Kernel list <linux-kernel@...r.kernel.org>,
        Christoph Hellwig <hch@....de>
Subject: Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2
 vectors

[+cc Christoph]

On Tue, Aug 15, 2017 at 05:54:27PM +0300, Meelis Roos wrote:
> I noticed that in 4.13.0-rc4 there is a new error in dmesg on my sparc64 
> t5120 server: can't allocate MSI-X affinity masks.
> 
> [   30.274284] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 10.00.00.00-k.
> [   30.274648] qla2xxx [0000:10:00.0]-001d: : Found an ISP2432 irq 21 iobase 0x000000c100d00000.
> [   30.275447] qla2xxx 0000:10:00.0: can't allocate MSI-X affinity masks for 2 vectors
> [   30.816882] scsi host1: qla2xxx
> [   30.877294] qla2xxx: probe of 0000:10:00.0 failed with error -22
> [   30.877578] qla2xxx [0000:10:00.1]-001d: : Found an ISP2432 irq 22 iobase 0x000000c100d04000.
> [   30.878387] qla2xxx 0000:10:00.1: can't allocate MSI-X affinity masks for 2 vectors
> [   31.367083] scsi host1: qla2xxx
> [   31.427500] qla2xxx: probe of 0000:10:00.1 failed with error -22
> 
> I do not know if the driver works since nothing is attached to the FC 
> HBA at the moment, but from the error messages it looks like the driver 
> fails to load.
> 
> I booted 4.12 and 4.11 - the red error is not there but the failure 
> seems to be the same error -22:

-22 is -EINVAL, so not very specific.  Many failures probably use this
code.

There were several IRQ affinity changes between v4.12 and v4.13; it'll
probably be obvious to Christoph.

> [2478900.385223] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 9.00.00.00-k.
> [2478900.385610] qla2xxx [0000:10:00.0]-001d: : Found an ISP2432 irq 21 iobase 0x000000c100d00000.
> [2478900.930517] scsi host1: qla2xxx
> [2478900.990939] qla2xxx: probe of 0000:10:00.0 failed with error -22
> [2478900.991222] qla2xxx [0000:10:00.1]-001d: : Found an ISP2432 irq 22 iobase 0x000000c100d04000.
> [2478901.510715] scsi host1: qla2xxx
> [2478901.581106] qla2xxx: probe of 0000:10:00.1 failed with error -22
> 
> Will try older kernels too if it is useful for bisection.
> 
> On an older sparc64 (t1-200) with 4.13.0-rc4, qla2xxx loads fine (nothing is attached there either):
> 
> [   30.590064] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 10.00.00.00-k.
> [   30.699053] PCI: Enabling device: (0000:02:05.0), cmd 3
> [   30.699122] qla2xxx [0000:02:05.0]-001d: : Found an ISP2200 irq 12 iobase 0x000001ff0000a000.
> [   52.463403] scsi host2: qla2xxx
> [   52.545973] qla2xxx [0000:02:05.0]-4800:2: DPC handler sleeping.
> [   52.627163] qla2xxx [0000:02:05.0]-00fb:2: QLogic QLA22xx - .
> [   52.705428] qla2xxx [0000:02:05.0]-00fc:2: ISP2200: PCI (33 MHz) @ 0000:02:05.0 hdma- host#=2 fw=2.02.08 TP.
> [   53.503221] qla2xxx [0000:02:05.0]-480f:2: Loop resync scheduled.
> [   73.796964] qla2xxx [0000:02:05.0]-8038:2: Cable is unplugged...
> [   73.876036] qla2xxx [0000:02:05.0]-883a:2: fw_state=4 (ffff, ffff, ffff, ffff ffff) curr time=ffffa61d.
> [   73.999845] qla2xxx [0000:02:05.0]-286c:2: qla2x00_loop_resync *** FAILED ***.
> [   74.094861] qla2xxx [0000:02:05.0]-4810:2: Loop resync end.
> [   74.168188] qla2xxx [0000:02:05.0]-4800:2: DPC handler sleeping.
> 
> 
> -- 
> Meelis Roos (mroos@...ux.ee)