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Date:   Fri, 15 Apr 2022 21:50:13 +0000
To:     Eric Dumazet <>
Subject: Re: [PATCH net] ipv6: make ip6_rt_gc_expire an atomic_t


This patch was applied to netdev/net.git (master)
by Jakub Kicinski <>:

On Wed, 13 Apr 2022 11:13:33 -0700 you wrote:
> From: Eric Dumazet <>
> Reads and Writes to ip6_rt_gc_expire always have been racy,
> as syzbot reported lately [1]
> There is a possible risk of under-flow, leading
> to unexpected high value passed to fib6_run_gc(),
> although I have not observed this in the field.
> [...]

Here is the summary with links:
  - [net] ipv6: make ip6_rt_gc_expire an atomic_t

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