Re: [PATCH net] netdevsim: update queue NAPI association on queue reset

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <[email protected]>:

On Mon, 17 Aug 2026 08:25:11 +0000 you wrote:
> In netdevsim, receive queues (struct nsim_rq) embed their own struct
> napi_struct. When queue reset is performed (e.g. via queue_reset
> debugfs), nsim_queue_start() swaps in a newly allocated struct nsim_rq,
> and nsim_queue_mem_free() later deletes and frees the old one.
> 
> However, nsim_queue_start() failed to update the queue-to-NAPI mapping
> via netif_queue_set_napi(). As a result, dev->_rx[idx].napi continued to
> point to the old NAPI struct. After the old queue was freed, a subsequent
> queue dump via Netlink (NETDEV_CMD_QUEUE_GET) triggered a KASAN
> slab-use-after-free read in nla_put_napi_id() when accessing
> rxq->napi->napi_id.
> 
> [...]

Here is the summary with links:
  - [net] netdevsim: update queue NAPI association on queue reset
    https://git.kernel.org/netdev/net/c/07e98a4d5e9c

You are awesome, thank you!
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