netdev - Re: Urgent Bug Report Kernel crash 6.5.2

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CANn89iJCJhJ=RWqPGkdbPoXhoa1W9ovi0s1t4242vsz-1=0WLw@mail.gmail.com>
Date: Wed, 20 Sep 2023 09:29:18 +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 9:25 AM Eric Dumazet <edumazet@...gle.com> wrote:
>
> 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.

Or stick to an older kernel for your production, and wait for others
to find the issue.