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From: Florian Westphal <fw@strlen.de>
To: Krzysztof Kozlowski <krzk@kernel.org>
Cc: alexander.h.duyck@intel.com, amritha.nambiar@intel.com,
	ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net,
	davem@davemloft.net, ecree@solarflare.com, idosch@mellanox.com,
	jiri@mellanox.com, kafai@fb.com, kuznet@ms2.inr.ac.ru,
	linux-kernel@vger.kernel.org, lirongqing@baidu.com,
	netdev@vger.kernel.org, petrm@mellanox.com, sd@queasysnail.net,
	songliubraving@fb.com, syzkaller-bugs@googlegroups.com,
	yhs@fb.com, yoshfuji@linux-ipv6.org
Subject: Re: BUG: using __this_cpu_read() in preemptible code in ip6_finish_output
Date: Fri, 5 Apr 2019 12:08:50 +0200	[thread overview]
Message-ID: <20190405100850.tojfhy3ob5gprwo7@breakpoint.cc> (raw)
In-Reply-To: <CAJKOXPcrimyMrK7LBbZLaqHGhS5dSCcBC1X01_pRY5evCD7n5Q@mail.gmail.com>

Krzysztof Kozlowski <krzk@kernel.org> wrote:
> On Wed, 3 Apr 2019 at 03:14, syzbot
> <syzbot+51471b4aae195285a4a3@syzkaller.appspotmail.com> wrote:
> >
> > syzbot has bisected this bug to:
> >
> > commit 97cdcf37b57e3f204be3000b9eab9686f38b4356
> > Author: Florian Westphal <fw@strlen.de>
> > Date:   Mon Apr 1 14:42:13 2019 +0000
> >
> >      net: place xmit recursion in softnet data
> 
> I am seeing this as well on ARMv7 board booted from NFS root (exynos_defconfig):

Sorry about this, the fix is now in net-next though:
28b05b92886871bdd ("net: use correct this_cpu primitive in dev_recursion_level")

  reply	other threads:[~2019-04-05 10:09 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-02 22:44 BUG: using __this_cpu_read() in preemptible code in ip6_finish_output syzbot
2019-04-03  1:12 ` syzbot
2019-04-05  7:00   ` Krzysztof Kozlowski
2019-04-05 10:08     ` Florian Westphal [this message]
2019-04-05 12:36       ` Dmitry Vyukov

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