netdev - Re: devlink dump of mlxsw_adj table triggers a panic

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Message-ID: <c7286c2b-09de-1221-303a-0aed3ed77c21@mellanox.com>
Date:   Sun, 8 Oct 2017 10:43:08 +0300
From:   Arkadi Sharshevsky <arkadis@...lanox.com>
To:     David Ahern <dsa@...ulusnetworks.com>,
        Jiri Pirko <jiri@...lanox.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: devlink dump of mlxsw_adj table triggers a panic



On 10/05/2017 02:57 AM, David Ahern wrote:
> The following devlink command on a 2700 triggers a panic every time.
> Kernel is net-next at 26873308b21654b6e0785b9f9e2c5414d37a4c4c
> 
> $ devlink  dpipe table dump pci/0000:03:00.0 name mlxsw_adj
> devlink answers: No buffer space available
> <hang>
> 
> I have seen several different stack traces and varying amounts of EMAD
> errors on console:
> 
> [   77.453364] mlxsw_spectrum 0000:03:00.0: EMAD reg access failed
> (tid=64c24a400003688,reg_id=200b(sfn),type=query,status=0(operation
> performed))
> [   77.466568] mlxsw_spectrum 0000:03:00.0: Failed to get FDB notifications
> 
> If it does not reproduce for you let me know and I'll grab a trace.
> 
> David
> 

Thanks, will check it out. How many nexthops groups & overall number of
nexthops you configured?

Thanks,
Arkadi