Re: [PATCH net v2] bridge: mrp: reject zero test interval to avoid OOM panic

patchwork-bot+netdevbpf
2026-03-31T14:20:22Z

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@redhat.com>:

On Fri, 27 Mar 2026 23:30:00 -0700 you wrote:
> br_mrp_start_test() and br_mrp_start_in_test() accept the user-supplied
> interval value from netlink without validation. When interval is 0,
> usecs_to_jiffies(0) yields 0, causing the delayed work
> (br_mrp_test_work_expired / br_mrp_in_test_work_expired) to reschedule
> itself with zero delay. This creates a tight loop on system_percpu_wq
> that allocates and transmits MRP test frames at maximum rate, exhausting
> all system memory and causing a kernel panic via OOM deadlock.
>
> [...]

Here is the summary with links:
- [net,v2] bridge: mrp: reject zero test interval to avoid OOM panic
https://git.kernel.org/netdev/net/c/fa6e24963342

You are awesome, thank you!
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