linux-kernel - Re: linux-next boot error: WARNING: suspicious RCU usage in ipmr_get

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Date:   Sat, 9 May 2020 12:15:31 +0530
From:   Amol Grover <frextrite@...il.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Qian Cai <cai@....pw>, Dmitry Vyukov <dvyukov@...gle.com>,
        Madhuparna Bhowmik <madhuparnabhowmik10@...il.com>,
        syzbot <syzbot+1519f497f2f9f08183c6@...kaller.appspotmail.com>,
        David Miller <davem@...emloft.net>, kuba@...nel.org,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        LKML <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        "paul E. McKenney" <paulmck@...nel.org>,
        "Joel Fernandes (Google)" <joel@...lfernandes.org>
Subject: Re: linux-next boot error: WARNING: suspicious RCU usage in
 ipmr_get_table

On Thu, May 07, 2020 at 06:26:01AM +1000, Stephen Rothwell wrote:
> Hi all,
> 
> On Thu, 7 May 2020 06:16:35 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> >
> > Hi Qian,
> > 
> > On Tue, 28 Apr 2020 09:56:59 -0400 Qian Cai <cai@....pw> wrote:
> > >  
> > > > On Apr 28, 2020, at 4:57 AM, Dmitry Vyukov <dvyukov@...gle.com> wrote:    
> > > >> net/ipv4/ipmr.c:136 RCU-list traversed in non-reader section!!    
> > > 
> > > https://lore.kernel.org/netdev/20200222063835.14328-2-frextrite@gmail.com/
> > > 
> > > Never been picked up for a few months due to some reasons. You could probably
> > > need to convince David, Paul, Steven or Linus to unblock the bot or carry patches
> > > on your own?  
> > 
> > Did you resubmit the patch series as Dave Miller asked you to (now that
> > net-next is based on v5.7-rc1+)?
> 
> In any case, I have added the 2 commits in this series to my fixes tree
> from today - I will remove them when some other tree has a solution
> applied.
> 

Hi Stephen

I'll follow up with David regarding this patch series.

Thanks
Amol

> -- 
> Cheers,
> Stephen Rothwell