netdev - Re: Urgent Bug Report Kernel crash 6.5.2

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Message-ID: <CANn89iKvv7F9G8AbYTEu7wca_SDHEp4GVTOEWk7_Yq0KFJrWgw@mail.gmail.com>
Date: Wed, 20 Sep 2023 09:25:54 +0200
From: Eric Dumazet <edumazet@...gle.com>
To: Martin Zaharinov <micron10@...il.com>
Cc: Bagas Sanjaya <bagasdotme@...il.com>, Paolo Abeni <pabeni@...hat.com>, 
	netdev <netdev@...r.kernel.org>, patchwork-bot+netdevbpf@...nel.org, 
	Jakub Kicinski <kuba@...nel.org>, Stephen Hemminger <stephen@...workplumber.org>, kuba+netdrv@...nel.org, 
	dsahern@...il.com, Florian Westphal <fw@...len.de>, Pablo Neira Ayuso <pablo@...filter.org>
Subject: Re: Urgent Bug Report Kernel crash 6.5.2

On Wed, Sep 20, 2023 at 9:04 AM Martin Zaharinov <micron10@...il.com> wrote:
>
> Hi
>
> Ok on first see all is look come after in kernel 6.4 add : atomics: Provide rcuref - scalable reference counting  ( https://www.spinics.net/lists/linux-tip-commits/msg62042.html )
>
> I check all running machine with kernel 6.4.2 is minimal and have same bug report.
>
> i have fell machine with kernel 6.3.9 and not see problems there .
>
> and the problem may be is allocate in this part :
>
> [39651.444202] ? rcuref_put_slowpath (lib/rcuref.c:267 (discriminator 1))
> [39651.444297] ? rcuref_put_slowpath (lib/rcuref.c:267 (discriminator 1))
> [39651.444391] dst_release (./arch/x86/include/asm/preempt.h:95 ./include/linux/rcuref.h:151 net/core/dst.c:166)
> [39651.444487] __dev_queue_xmit (./include/net/dst.h:283 net/core/dev.c:4158)
> [39651.444582] ? nf_hook_slow (./include/linux/netfilter.h:143 net/netfilter/core.c:626)
>
> may be changes in dst.c make problem , I'm guessing at the moment.
>
> but in real with kernel 6.3 all is fine for now.
>
> dst.c changes 6.3.9 > 6.5.4 :

Then start a real bisection. This is going to be the last time I say it.