Re: [PATCH net v2 1/1] xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory model

patchwork-bot+netdevbpf
2021-03-31T22:21:18Z

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Wed, 31 Mar 2021 21:25:03 +0800 you wrote:
> xdp_return_frame() may be called outside of NAPI context to return
> xdpf back to page_pool. xdp_return_frame() calls __xdp_return() with
> napi_direct = false. For page_pool memory model, __xdp_return() calls
> xdp_return_frame_no_direct() unconditionally and below false negative
> kernel BUG throw happened under preempt-rt build:
>
> [ 430.450355] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/3884
> [ 430.451678] caller is __xdp_return+0x1ff/0x2e0
> [ 430.452111] CPU: 0 PID: 3884 Comm: modprobe Tainted: G U E 5.12.0-rc2+ #45
>
> [...]

Here is the summary with links:
- [net,v2,1/1] xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory model
https://git.kernel.org/netdev/net/c/622d13694b5f

You are awesome, thank you!
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