Re: [PATCH v3 02/16] scsi: don't use fc_bsg_job::request and fc_bsg_job::reply directly

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On Tue, Nov 15, 2016 at 03:31:27PM +0100, Steffen Maier wrote:
> Hi Johannes,
> 
> On 11/15/2016 12:56 PM, Johannes Thumshirn wrote:
> > On Tue, Oct 25, 2016 at 09:43:14AM +0200, Johannes Thumshirn wrote:
> > > On Fri, Oct 14, 2016 at 09:38:21AM +0200, Johannes Thumshirn wrote:
> > > > On Thu, Oct 13, 2016 at 05:55:11PM +0200, Steffen Maier wrote:
> > > > > Hm, still behaves for me like I reported for v2:
> > > > > http://marc.info/?l=linux-scsi&m=147637177902937&w=2
> > 
> > [...]
> > 
> > > > 
> > > > The rational behind this is, in fc_req_to_bsgjob() we're assigning
> > > > job->request as req->cmd and job->request_len = req->cmd_len. But without
> > > > checkinf job->request_len we don't know whether we're save to touch
> > > > job->request (a.k.a. bsg_request).
> > > 
> > > Hi Steffen,
> > > Did you have any chance testing this? I hacked fcping to work with non-FCoE
> > > and rports as well and tested with FCoE and lpfc. No problems seen from my
> > > side. I've also pused the series (With this change folded in) to my git
> > > tree at [1] if this helps you in any way.
> > > 
> > > [1] https://git.kernel.org/cgit/linux/kernel/git/jth/linux.git/log/?h=scsi-bsg-rewrite-v4
> > > 
> > 
> > So I finally have a test system up and running. I have good and bad news. The
> > good news is, I can't get the system crashing with my patches, the bad news is
> > I can't get zfcp_ping and zfcp_show to output something but HBA_STATUS_ERROR
> > with my patches and without.

Please ignore my last mails, apparently it's a wise idea to check which user
id one has before running zfcp_ping...

The good news for this is, I can now recreate the crashes you have and thus
have a chance to fix them :-)

Byte,
	Johannes
-- 
Johannes Thumshirn                                          Storage
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