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Date: Sat, 26 Jul 2025 11:34:17 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Eric Dumazet <edumazet@google.com>, Kuniyuki Iwashima
 <kuniyu@google.com>
Cc: "David S . Miller" <davem@davemloft.net>, Paolo Abeni
 <pabeni@redhat.com>, Simon Horman <horms@kernel.org>, David Ahern
 <dsahern@kernel.org>, netdev@vger.kernel.org, eric.dumazet@gmail.com
Subject: Re: [PATCH net 0/4] ipv6: f6i->fib6_siblings and rt->fib6_nsiblings
 fixes
Message-ID: <20250726113417.1371e296@kernel.org>
In-Reply-To: <20250725140725.3626540-1-edumazet@google.com>
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On Fri, 25 Jul 2025 14:07:21 +0000 Eric Dumazet wrote:
> Series based on an internal syzbot report with a repro.
> 
> After fixing (in the first patch) the original minor issue,
> I found that syzbot repro was able to trigger a second
> more serious bug in rt6_nlmsg_size().
> 
> Code review then led to the two final patches.
> 
> I have not released the syzbot bug, because other issues
> still need investigations.

We should probably spend more time on tests that modify things
concurrently for the RCU conversions :$