Re: [PATCH net,v3] net: mana: Fix accessing freed irq affinity_hint

Hello:

This patch was applied to netdev/net.git (master) by Jakub Kicinski kuba@kernel.org:

On Mon, 6 Feb 2023 13:28:49 -0800 you wrote:

After calling irq_set_affinity_and_hint(), the cpumask pointer is saved in desc->affinity_hint, and will be used later when reading /proc/irq/<num>/affinity_hint. So the cpumask variable needs to be persistent. Otherwise, we are accessing freed memory when reading the affinity_hint file.

Also, need to clear affinity_hint before free_irq(), otherwise there is a one-time warning and stack trace during module unloading:

[...]

Here is the summary with links: - [net,v3] net: mana: Fix accessing freed irq affinity_hint https://git.kernel.org/netdev/net/c/18a048370b06

You are awesome, thank you!