netdev - Re: [PATCH net 1/1] tcp: check skb is non-NULL in tcp_rto_delta

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Message-ID: <CAL+tcoDh1GUL-m-UXM=WenN74wXLsgudEScJedfa=AEzt1Rs9g@mail.gmail.com>
Date: Fri, 23 Aug 2024 11:27:19 +0800
From: Jason Xing <kerneljasonxing@...il.com>
To: Josh Hunt <johunt@...mai.com>
Cc: edumazet@...gle.com, davem@...emloft.net, kuba@...nel.org, 
	pabeni@...hat.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net 1/1] tcp: check skb is non-NULL in tcp_rto_delta_us()

Hello Josh,

On Fri, Aug 23, 2024 at 11:02 AM Josh Hunt <johunt@...mai.com> wrote:
>
> There have been multiple occassions where we have crashed in this path
> because packets_out suggested there were packets on the write or retransmit
> queues, but in fact there weren't leading to a NULL skb being dereferenced.

Could you show us the detailed splats and more information about it so
that we can know what exactly happened?

Thanks,
Jason