From: Leon Romanovsky <leon@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>, Jakub Kicinski <kuba@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linuxfoundation.org>,
x86@kernel.org, Wangyang Guo <wangyang.guo@intel.com>,
Arjan van De Ven <arjan@linux.intel.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
netdev@vger.kernel.org, Will Deacon <will@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Boqun Feng <boqun.feng@gmail.com>,
Mark Rutland <mark.rutland@arm.com>,
Marc Zyngier <maz@kernel.org>, Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Subject: Re: [patch V3 0/4] net, refcount: Address dst_entry reference count scalability issues
Date: Mon, 17 Apr 2023 14:44:25 +0300 [thread overview]
Message-ID: <20230417114425.GA434718@unreal> (raw)
In-Reply-To: <20230323102649.764958589@linutronix.de>
On Thu, Mar 23, 2023 at 09:55:27PM +0100, Thomas Gleixner wrote:
> Hi!
>
> This is version 3 of this series. Version 2 can be found here:
>
> https://lore.kernel.org/lkml/20230307125358.772287565@linutronix.de
Hi,
I want to raise your attention to this bug report from Intel.
https://lore.kernel.org/all/202304162125.18b7bcdd-oliver.sang@intel.com/
We (Nvidia) are experiencing similar failures in our regressions too.
Revert of last two patches [1] from this series removed the panics, but
didn't add confidence due to another (???) netdev failure:
[ +10.080020] unregister_netdevice: waiting for eth3 to become free. Usage count = 2
Thanks
[1]
bc9d3a9f2afc net: dst: Switch to rcuref_t reference counting
d288a162dd1c net: dst: Prevent false sharing vs. dst_entry:: __refcnt
prev parent reply other threads:[~2023-04-17 11:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-23 20:55 [patch V3 0/4] net, refcount: Address dst_entry reference count scalability issues Thomas Gleixner
2023-03-23 20:55 ` [patch V3 1/4] [patch V2 1/4] net: dst: Prevent false sharing vs. dst_entry:: __refcnt Thomas Gleixner
2023-03-23 20:55 ` [patch V3 2/4] atomics: Provide atomic_add_negative() variants Thomas Gleixner
2023-03-28 8:49 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2023-04-29 7:03 ` tip-bot2 for Thomas Gleixner
2023-03-23 20:55 ` [patch V3 3/4] atomics: Provide rcuref - scalable reference counting Thomas Gleixner
2023-03-28 8:49 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2023-04-29 7:03 ` tip-bot2 for Thomas Gleixner
2023-03-23 20:55 ` [patch V3 4/4] net: dst: Switch to rcuref_t " Thomas Gleixner
2023-03-23 21:54 ` Linus Torvalds
2023-03-28 8:45 ` [patch V3 0/4] net, refcount: Address dst_entry reference count scalability issues Peter Zijlstra
2023-03-29 2:30 ` patchwork-bot+netdevbpf
2023-04-10 22:53 ` Paul E. McKenney
2023-04-17 11:44 ` Leon Romanovsky [this message]
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