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Date:   Tue, 14 Jun 2022 16:56:29 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Jaroslav Pulchart <jaroslav.pulchart@gooddata.com>
Cc:     linux-kernel@vger.kernel.org, stable@vger.kernel.org,
        torvalds@linux-foundation.org, akpm@linux-foundation.org,
        linux@roeck-us.net, shuah@kernel.org, patches@kernelci.org,
        lkft-triage@lists.linaro.org, pavel@denx.de, jonathanh@nvidia.com,
        f.fainelli@gmail.com, sudipm.mukherjee@gmail.com,
        slade@sladewatkins.com
Subject: Re: [PATCH 5.18 000/343] 5.18.4-rc2 review
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On Tue, Jun 14, 2022 at 04:41:31PM +0200, Jaroslav Pulchart wrote:
> ?t 14. 6. 2022 v 8:34 odes?latel Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> napsal:
> >
> > On Tue, Jun 14, 2022 at 07:56:36AM +0200, Jaroslav Pulchart wrote:
> > > Hello,
> > >
> > > I would like to report that the ethernet ice driver is not capable of
> > > setting promisc mode on at E810-XXV physical interface in the whole
> > > 5.18.y kernel line.
> > >
> > > Reproducer:
> > >    $ ip link set promisc on dev em1
> > > Dmesg error message:
> > >    Error setting promisc mode on VSI 6 (rc=-17)
> > >
> > > the problem was not observed with 5.17.y
> >
> > Any chance you can use 'git bisect' to track down the problem commit and
> > let the developers of it know?
> >
> > thanks,
> 
> I tried it, but it makes the system unbootable. I expect the reason is
> that it happened somewhere between 5.17->5.18 so I'm using an
> "unstable" kernel.
> 
> Is there some way I could bisect just one driver, not a full kernel
> between 5.17->5.18?

How do you know it is just "one driver"?

Anyway, yes, I think there are options to give to git bisect, you can
feed it just the path to the driver as part of 'git bisect start' and I
think that should work.  The man page for 'git bisect' shows this with
the following example:
	 git bisect start -- arch/i386 include/asm-i386
to just test changes for those directories.

thanks,

greg k-h