From: patchwork-bot+netdevbpf@kernel.org
To: David Ahern <dsahern@kernel.org>
Cc: netdev@vger.kernel.org, kuba@kernel.org, davem@davemloft.net,
oliver.peter.herms@gmail.com
Subject: Re: [PATCH net] ipv4: Fix device used for dst_alloc with local routes
Date: Mon, 14 Jun 2021 19:40:03 +0000 [thread overview]
Message-ID: <162369960363.4485.4512356875648220527.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20210613002500.63438-1-dsahern@kernel.org>
Hello:
This patch was applied to netdev/net.git (refs/heads/master):
On Sat, 12 Jun 2021 18:24:59 -0600 you wrote:
> Oliver reported a use case where deleting a VRF device can hang
> waiting for the refcnt to drop to 0. The root cause is that the dst
> is allocated against the VRF device but cached on the loopback
> device.
>
> The use case (added to the selftests) has an implicit VRF crossing
> due to the ordering of the FIB rules (lookup local is before the
> l3mdev rule, but the problem occurs even if the FIB rules are
> re-ordered with local after l3mdev because the VRF table does not
> have a default route to terminate the lookup). The end result is
> is that the FIB lookup returns the loopback device as the nexthop,
> but the ingress device is in a VRF. The mismatch causes the dst
> alloc against the VRF device but then cached on the loopback.
>
> [...]
Here is the summary with links:
- [net] ipv4: Fix device used for dst_alloc with local routes
https://git.kernel.org/netdev/net/c/b87b04f5019e
You are awesome, thank you!
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prev parent reply other threads:[~2021-06-14 19:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-13 0:24 [PATCH net] ipv4: Fix device used for dst_alloc with local routes David Ahern
2021-06-14 19:40 ` patchwork-bot+netdevbpf [this message]
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