netdev - Re: [PATCH net 2/3] eth: bnxt: return fail if interface is down in bnxt_queue_mem

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Message-ID: <20250226180800.7c0bfd38@kernel.org>
Date: Wed, 26 Feb 2025 18:08:00 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Taehee Yoo <ap420073@...il.com>
Cc: davem@...emloft.net, pabeni@...hat.com, edumazet@...gle.com,
 michael.chan@...adcom.com, pavan.chebbi@...adcom.com,
 andrew+netdev@...n.ch, netdev@...r.kernel.org, gospo@...adcom.com,
 somnath.kotur@...adcom.com, dw@...idwei.uk, horms@...nel.org
Subject: Re: [PATCH net 2/3] eth: bnxt: return fail if interface is down in
 bnxt_queue_mem_alloc()

On Wed, 26 Feb 2025 06:18:36 +0000 Taehee Yoo wrote:
> The bnxt_queue_mem_alloc() is called to allocate new queue memory when
> a queue is restarted.
> It internally accesses rx buffer descriptor corresponding to the index.
> The rx buffer descriptor is allocated and set when the interface is up
> and it's freed when the interface is down.
> So, if queue is restarted if interface is down, kernel panic occurs.

Reviewed-by: Jakub Kicinski <kuba@...nel.org>