From: Jakub Kicinski <kuba@kernel•org>
To: Taehee Yoo <ap420073@gmail•com>
Cc: davem@davemloft•net, pabeni@redhat•com, edumazet@google•com,
michael.chan@broadcom•com, netdev@vger•kernel.org,
somnath.kotur@broadcom•com, dw@davidwei•uk, horms@kernel•org
Subject: Re: [PATCH net-next] bnxt_en: fix kernel panic in queue api functions
Date: Thu, 4 Jul 2024 06:33:25 -0700 [thread overview]
Message-ID: <20240704063325.7ddd6e8a@kernel.org> (raw)
In-Reply-To: <20240704074153.1508825-1-ap420073@gmail.com>
On Thu, 4 Jul 2024 07:41:53 +0000 Taehee Yoo wrote:
> bnxt_queue_{mem_alloc,start,stop} access bp->rx_ring array and this is
> initialized while an interface is being up.
> The rings are initialized as a number of channels.
>
> The queue API functions access rx_ring without checking both null and
> ring size.
> So, if the queue API functions are called when interface status is down,
> they access an uninitialized rx_ring array.
> Also if the queue index parameter value is larger than a ring, it
> would also access an uninitialized rx_ring.
Shouldn't the core be checking against dev->real_num_rx_queues instead ?
next prev parent reply other threads:[~2024-07-04 13:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-04 7:41 [PATCH net-next] bnxt_en: fix kernel panic in queue api functions Taehee Yoo
2024-07-04 8:13 ` Somnath Kotur
2024-07-04 13:33 ` Jakub Kicinski [this message]
2024-07-04 15:20 ` Taehee Yoo
2024-07-05 18:42 ` David Wei
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