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Date:   Tue, 10 Aug 2021 10:50:29 -0700
From:   Shoaib Rao <>
To:     Eric Dumazet <>,
        Eric Dumazet <>
Cc:     Dmitry Vyukov <>,
        syzbot <>,
        Andrii Nakryiko <>,
        Alexei Starovoitov <>, bpf <>,
        Christian Brauner <>,
        Cong Wang <>,
        Daniel Borkmann <>,
        David Miller <>,,
        John Fastabend <>,
        Martin KaFai Lau <>,,
        Jakub Kicinski <>,
        LKML <>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <>, netdev <>,
        Shuah Khan <>,
        Song Liu <>,
        syzkaller-bugs <>,
        Al Viro <>, Yonghong Song <>
Subject: Re: [syzbot] BUG: sleeping function called from invalid context in

On 8/10/21 2:19 AM, Eric Dumazet wrote:
> On 8/9/21 10:31 PM, Shoaib Rao wrote:
>> On 8/9/21 1:09 PM, Eric Dumazet wrote:
>>> I am guessing that even your test would trigger the warning,
>>> if you make sure to include CONFIG_DEBUG_ATOMIC_SLEEP=y in your kernel build.
>> Eric,
>> Thanks for the pointer, have you ever over looked at something when coding?
> I _think_ I was trying to help, not shaming you in any way.
How did the previous email help? I did not get any reply when I asked 
what could be the cause.
> My question about spinlock/mutex was not sarcastic, you authored
> 6 official linux patches, there is no evidence for linux kernel expertise.

That is no measure of someones understanding. There are other OS's as 
well. I have worked on Solaris and other *unix* OS's for over 20+ years. 
This was an oversight on my part and I apologize, but instead of 
questioning my expertise it would have been helpful to say what might 
have caused it.


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