netdev - Re: BUG: using __this_cpu_add() in preemptible in tcp_make

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Message-ID: <c264614a-ec6b-8793-0513-d0ad8c58f745@cloudflare.com>
Date:   Thu, 23 Feb 2023 13:00:47 -0600
From:   Frederick Lawler <fred@...udflare.com>
To:     Frank Hofmann <fhofmann@...udflare.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     netdev@...r.kernel.org, kernel-team@...udflare.com,
        davem@...emloft.net, yoshfuji@...ux-ipv6.org, dsahern@...nel.org,
        kuba@...nel.org, pabeni@...hat.com
Subject: Re: BUG: using __this_cpu_add() in preemptible in tcp_make_synack()

On 2/15/23 2:25 AM, Frank Hofmann wrote:
> Hi Eric,
> 
> On Tue, Feb 14, 2023 at 7:59 PM Eric Dumazet <edumazet@...gle.com> wrote:
>>
>> On Tue, Feb 14, 2023 at 6:14 PM Frank Hofmann <fhofmann@...udflare.com> wrote:
>>>
>>> Hi Eric,
>>>
> [ ... ]
>> Thanks for the report.
>>
>> I think the following patch should help, please let me know if any
>> more issues are detected.
> [ ... ]
> 
> We'll give this a shot and let you know if we see anything else.
> Thank you!
> 
> FrankH.

Hi Eric,

We began rolling out the update on the 14th and haven't seen any more 
messages crop up in our logs. We'd like to check again after another 
week or so, but so far the two patches are promising.

Fred