From: patchwork-bot+netdevbpf@kernel.org
To: Wang Liang <wangliang74@huawei.com>
Cc: razor@blackwall.org, idosch@nvidia.com, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
horms@kernel.org, bridge@lists.linux.dev, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, yuehaibing@huawei.com,
zhangchangzhong@huawei.com
Subject: Re: [PATCH net v3] net: bridge: fix soft lockup in br_multicast_query_expired()
Date: Fri, 15 Aug 2025 01:00:06 +0000 [thread overview]
Message-ID: <175521960625.502863.7225770030306226732.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20250813021054.1643649-1-wangliang74@huawei.com>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Wed, 13 Aug 2025 10:10:54 +0800 you wrote:
> When set multicast_query_interval to a large value, the local variable
> 'time' in br_multicast_send_query() may overflow. If the time is smaller
> than jiffies, the timer will expire immediately, and then call mod_timer()
> again, which creates a loop and may trigger the following soft lockup
> issue.
>
> watchdog: BUG: soft lockup - CPU#1 stuck for 221s! [rb_consumer:66]
> CPU: 1 UID: 0 PID: 66 Comm: rb_consumer Not tainted 6.16.0+ #259 PREEMPT(none)
> Call Trace:
> <IRQ>
> __netdev_alloc_skb+0x2e/0x3a0
> br_ip6_multicast_alloc_query+0x212/0x1b70
> __br_multicast_send_query+0x376/0xac0
> br_multicast_send_query+0x299/0x510
> br_multicast_query_expired.constprop.0+0x16d/0x1b0
> call_timer_fn+0x3b/0x2a0
> __run_timers+0x619/0x950
> run_timer_softirq+0x11c/0x220
> handle_softirqs+0x18e/0x560
> __irq_exit_rcu+0x158/0x1a0
> sysvec_apic_timer_interrupt+0x76/0x90
> </IRQ>
>
> [...]
Here is the summary with links:
- [net,v3] net: bridge: fix soft lockup in br_multicast_query_expired()
https://git.kernel.org/netdev/net/c/d1547bf460ba
You are awesome, thank you!
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prev parent reply other threads:[~2025-08-15 0:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-13 2:10 [PATCH net v3] net: bridge: fix soft lockup in br_multicast_query_expired() Wang Liang
2025-08-13 5:48 ` Ido Schimmel
2025-08-13 7:49 ` Nikolay Aleksandrov
2025-08-15 1:00 ` patchwork-bot+netdevbpf [this message]
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