From: Ilya Maximets <i.maximets@ovn.org>
To: Jakub Kicinski <kuba@kernel.org>,
"He, Guocai (CN)" <Guocai.He.CN@windriver.com>
Cc: Lion Ackermann <nnamrec@gmail.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"ovs-discuss@openvswitch.org" <ovs-discuss@openvswitch.org>,
i.maximets@ovn.org
Subject: Re: [netdev] htb_qlen_notify warning triggered after qdisc_tree_reduce_backlog change
Date: Fri, 8 Aug 2025 22:40:44 +0200 [thread overview]
Message-ID: <80f40620-e5f4-4238-995a-f9d348fb1b4b@ovn.org> (raw)
In-Reply-To: <20250808132915.7f6c8678@kernel.org>
On 8/8/25 10:29 PM, Jakub Kicinski wrote:
> On Wed, 6 Aug 2025 08:29:34 +0000 He, Guocai (CN) wrote:
>> ### Environment
>> - Kernel version: 5.15.189-rt76-yocto-preempt-rt
>> - Open vSwitch version: 2.17.9
>
>> ### Issue
>> After applying the QoS configuration, the following warning appears in dmesg:
>> [73591.168117] WARNING: CPU: 6 PID: 61296 at net/sched/sch_htb.c:609 htb_qlen_notify+0x3a/0x40 [sch_htb]
>
> Is the issue easily reproducible ?
> Could you try your reproducer on the latest upstream kernel ?
FWIW, the issue is likely the same as this one:
https://lore.kernel.org/netdev/779ce04d-2053-4196-b989-f801720e65bc@hauke-m.de/
Caused by missing backports in the 5.15 tree.
Best regards, Ilya Maximets.
next prev parent reply other threads:[~2025-08-08 20:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-06 8:29 He, Guocai (CN)
2025-08-08 20:29 ` Jakub Kicinski
2025-08-08 20:40 ` Ilya Maximets [this message]
2025-08-11 1:29 ` He, Guocai (CN)
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