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From: Shoaib Rao <rao.shoaib@oracle.com>
To: Eric Dumazet <eric.dumazet@gmail.com>,
	Eric Dumazet <edumazet@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>,
	syzbot <syzbot+8760ca6c1ee783ac4abd@syzkaller.appspotmail.com>,
	Andrii Nakryiko <andrii@kernel.org>,
	Alexei Starovoitov <ast@kernel.org>, bpf <bpf@vger.kernel.org>,
	Christian Brauner <christian.brauner@ubuntu.com>,
	Cong Wang <cong.wang@bytedance.com>,
	Daniel Borkmann <daniel@iogearbox.net>,
	David Miller <davem@davemloft.net>,
	jamorris@linux.microsoft.com,
	John Fastabend <john.fastabend@gmail.com>,
	Martin KaFai Lau <kafai@fb.com>,
	kpsingh@kernel.org, Jakub Kicinski <kuba@kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	"open list:KERNEL SELFTEST FRAMEWORK" 
	<linux-kselftest@vger.kernel.org>,
	netdev <netdev@vger.kernel.org>, Shuah Khan <shuah@kernel.org>,
	Song Liu <songliubraving@fb.com>,
	syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
	Al Viro <viro@zeniv.linux.org.uk>, Yonghong Song <yhs@fb.com>
Subject: Re: [syzbot] BUG: sleeping function called from invalid context in _copy_to_iter
Date: Tue, 10 Aug 2021 10:50:29 -0700	[thread overview]
Message-ID: <583beba4-2595-5f4c-49a8-f8d999f0ebe7@oracle.com> (raw)
In-Reply-To: <66417ce5-a0f0-9012-6c2e-7c8f1b161cff@gmail.com>


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.

Shoaib


  reply	other threads:[~2021-08-10 17:54 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-08 23:38 [syzbot] BUG: sleeping function called from invalid context in _copy_to_iter syzbot
2021-08-09 17:32 ` Shoaib Rao
2021-08-09 18:06   ` Dmitry Vyukov
2021-08-09 19:16     ` Shoaib Rao
2021-08-09 19:21       ` Dmitry Vyukov
2021-08-09 19:40         ` Shoaib Rao
2021-08-09 20:02           ` Eric Dumazet
2021-08-09 20:09             ` Eric Dumazet
2021-08-09 20:31               ` Shoaib Rao
2021-08-10  9:19                 ` Eric Dumazet
2021-08-10 17:50                   ` Shoaib Rao [this message]
2021-08-10 18:02                     ` Eric Dumazet
2021-08-10 18:29                       ` Shoaib Rao
2021-08-09 20:04           ` Al Viro
2021-08-09 20:16             ` Al Viro
2021-08-09 20:30               ` Shoaib Rao
2021-08-09 20:37               ` Shoaib Rao
2021-08-09 21:41                 ` Al Viro
2021-08-09 22:38                   ` Shoaib Rao
2021-08-09 19:57       ` Al Viro
2021-08-09 20:18         ` Shoaib Rao

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