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Date:   Wed, 25 Sep 2019 14:02:34 -0700
From:   Pravin Shelar <>
To:     Li RongQing <>
Cc:     Linux Kernel Network Developers <>
Subject: Re: [PATCH] openvswitch: change type of UPCALL_PID attribute to NLA_UNSPEC

On Tue, Sep 24, 2019 at 4:11 AM Li RongQing <> wrote:
> userspace openvswitch patch "(dpif-linux: Implement the API
> functions to allow multiple handler threads read upcall)"
> changes its type from U32 to UNSPEC, but leave the kernel
> unchanged
> and after kernel 6e237d099fac "(netlink: Relax attr validation
> for fixed length types)", this bug is exposed by the below
> warning
>         [   57.215841] netlink: 'ovs-vswitchd': attribute type 5 has an invalid length.
> Signed-off-by: Li RongQing <>

Acked-by: Pravin B Shelar <>


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