Re: [PATCH v6] net: mvneta_bm: add suspend/resume support to prevent crash after resume
From: patchwork-bot+netdevbpf
Date: Thu Jul 02 2026 - 09:18:28 EST
Hello:
This patch was applied to netdev/net-next.git (main)
by Paolo Abeni <pabeni@xxxxxxxxxx>:
On Tue, 30 Jun 2026 14:03:11 +0800 you wrote:
> The mvneta driver uses the hardware Buffer Manager (BM) for RX buffer
> allocation. During suspend, mvneta disables its clock, causing BM to
> lose all buffer address state. On resume, mvneta_bm_port_init() re-
> attaches the BM pool to the NIC, but BM hardware returns stale/garbage
> buffer addresses. When NAPI poll processes these buffers, DMA cache
> sync hits an invalid virtual address causing a kernel panic:
>
> [...]
Here is the summary with links:
- [v6] net: mvneta_bm: add suspend/resume support to prevent crash after resume
https://git.kernel.org/netdev/net-next/c/140be217df57
You are awesome, thank you!
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