linux-kernel - Re: [PATCH net v2] ice: Fix race during aux device (un)plugging

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Message-ID: <20220421080848.41bed123@ceranb>
Date:   Thu, 21 Apr 2022 08:08:48 +0200
From:   Ivan Vecera <ivecera@...hat.com>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     netdev@...r.kernel.org, poros@...hat.com, mschmidt@...hat.com,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Dave Ertman <david.m.ertman@...el.com>,
        Shiraz Saleem <shiraz.saleem@...el.com>,
        "moderated list:INTEL ETHERNET DRIVERS" 
        <intel-wired-lan@...ts.osuosl.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net v2] ice: Fix race during aux device (un)plugging

On Thu, 21 Apr 2022 08:12:58 +0300
Leon Romanovsky <leon@...nel.org> wrote:

> >  static struct iidc_auxiliary_drv *ice_get_auxiliary_drv(struct ice_pf *pf)
> >  {
> >  	struct auxiliary_device *adev;
> >  
> > +	BUG_ON(!mutex_is_locked(&pf->adev_mutex));  
> 
> Please don't add BUG_ON() in driver code.
> 
> I think that you are looking for lockdep_assert_held(&pf->adev_mutex).

Will fix.

I.