netdev - Re: [PATCH net] bnxt: fix crashes when reducing ring count with active RSS contexts

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Message-ID: <CACKFLimbLvTdqTnKjreKBqK8VQMKPVPt7KnrRej+wsUVchCWRA@mail.gmail.com>
Date: Mon, 5 Aug 2024 11:36:37 -0700
From: Michael Chan <michael.chan@...adcom.com>
To: Breno Leitao <leitao@...ian.org>
Cc: Jakub Kicinski <kuba@...nel.org>, pavan.chebbi@...adcom.com, davem@...emloft.net, 
	netdev@...r.kernel.org, edumazet@...gle.com, pabeni@...hat.com, 
	kalesh-anakkur.purayil@...adcom.com
Subject: Re: [PATCH net] bnxt: fix crashes when reducing ring count with
 active RSS contexts

On Mon, Aug 5, 2024 at 11:23 AM Michael Chan <michael.chan@...adcom.com> wrote:
>
> On Mon, Aug 5, 2024 at 11:04 AM Breno Leitao <leitao@...ian.org> wrote:
> >
> > On Mon, Aug 05, 2024 at 04:42:11AM -0700, Breno Leitao wrote:
> > > Somehow bp->rss_indir_tbl[i] goes beynd rx_nr_rings.
> >
> > I was able to debug this further, and the culprit is
> >
> > 98ba1d931f611e8f8f519c040 ("bnxt_en: Fix RSS logic in __bnxt_reserve_rings()")
>
> Thanks, we'll look into it.  Do you have the steps to reproduce it?

Maybe the FW on your NIC is older and BNXT_NEW_RM() is false.  That
code path may not be correct.  Anyway, we'll look into it.  Thanks
again.

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