netdev - Re: [regresion] Dell's OMSA Systems Management Data Engine stuck after update from 6.8.y to 6.9.y (with bisecting)

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Date: Fri, 31 May 2024 14:26:07 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Jaroslav Pulchart <jaroslav.pulchart@...ddata.com>
Cc: netdev@...r.kernel.org, Igor Raits <igor@...ddata.com>, Daniel Secik
 <daniel.secik@...ddata.com>, Zdenek Pesek <zdenek.pesek@...ddata.com>
Subject: Re: [regresion] Dell's OMSA Systems Management Data Engine stuck
 after update from 6.8.y to 6.9.y (with bisecting)

On Fri, 31 May 2024 08:48:31 +0200 Jaroslav Pulchart wrote:
> > Could you try this?
> >
> > diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
> > index 96accde527da..5fd06473ddd9 100644
> > --- a/net/ipv4/devinet.c
> > +++ b/net/ipv4/devinet.c
> > @@ -1912,6 +1912,8 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
> >                         goto done;
> >         }
> >  done:
> > +       if (err == -EMSGSIZE && likely(skb->len))
> > +               err = skb->len;
> >         if (fillargs.netnsid >= 0)
> >                 put_net(tgt_net);
> >         rcu_read_unlock();  
> 
> I tried it and it did not help, the issue is still there.

Hm. Could you strace it ? I wonder if I misread something it doing
multiple dumps and now its hanging on a different one..