netdev - Re: [PATCH 6.4 0/6] 6.4.3-rc2 review

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Message-ID: <CA+G9fYvEJgcNhvJk6pvdQOkaS_+x105ZgSM1BVvYy0RRW+1TvA@mail.gmail.com>
Date: Wed, 12 Jul 2023 18:41:46 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: Jakub Kicinski <kuba@...nel.org>, Netdev <netdev@...r.kernel.org>, 
	"open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@...r.kernel.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, 
	patches@...ts.linux.dev, linux-kernel@...r.kernel.org, 
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org, linux@...ck-us.net, 
	shuah@...nel.org, patches@...nelci.org, lkft-triage@...ts.linaro.org, 
	jonathanh@...dia.com, f.fainelli@...il.com, sudipm.mukherjee@...il.com, 
	srw@...dewatkins.net, rwarsow@....de, conor@...nel.org, 
	Qingfang DENG <qingfang.deng@...lower.com.cn>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, 
	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>, Masahide NAKAMURA <nakam@...ux-ipv6.org>, 
	Ville Nuorvala <vnuorval@....hut.fi>, Arnd Bergmann <arnd@...db.de>, Pavel Machek <pavel@...x.de>
Subject: Re: [PATCH 6.4 0/6] 6.4.3-rc2 review

On Wed, 12 Jul 2023 at 14:01, Pavel Machek <pavel@...x.de> wrote:
>
> Hi!
>
> > >   git_repo: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc
> > >   git_sha: 3e37df3ffd9a648c9f88f6bbca158e43d5077bef
> >
> > I can't find this sha :( Please report back if you can still repro this
> > and how we get get the relevant code
>
> That sha seems to be:
>
> commit 3e37df3ffd9a648c9f88f6bbca158e43d5077bef
> Author: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Date:   Sun Jul 9 22:38:22 2023 +0200
>
>     Linux 6.4.3-rc2

That is the commit id from stable-rc tree.

I have re-tested the reported issues multiple times and
it seems that it is intermittently reproducible.
Following list of links shows kernel crashes while testing
selftest net pmtu.sh

1)
Unable to handle kernel paging request at virtual address
https://lkft.validation.linaro.org/scheduler/job/6579624#L4648


2)
include/net/neighbour.h:302 suspicious rcu_dereference_check() usage!

https://lkft.validation.linaro.org/scheduler/job/6579625#L7500
https://lkft.validation.linaro.org/scheduler/job/6579626#L7509
https://lkft.validation.linaro.org/scheduler/job/6579622#L7537
https://lkft.validation.linaro.org/scheduler/job/6579623#L7469

- Naresh