Re: [PATCH net] enetc: Fix illegal access when reading affinity_hint
From: patchwork-bot+netdevbpf
Date: Sun Sep 19 2021 - 07:20:50 EST
Hello:
This patch was applied to netdev/net.git (refs/heads/master):
On Fri, 17 Sep 2021 13:22:05 +0300 you wrote:
> irq_set_affinity_hit() stores a reference to the cpumask_t
> parameter in the irq descriptor, and that reference can be
> accessed later from irq_affinity_hint_proc_show(). Since
> the cpu_mask parameter passed to irq_set_affinity_hit() has
> only temporary storage (it's on the stack memory), later
> accesses to it are illegal. Thus reads from the corresponding
> procfs affinity_hint file can result in paging request oops.
>
> [...]
Here is the summary with links:
- [net] enetc: Fix illegal access when reading affinity_hint
https://git.kernel.org/netdev/net/c/7237a494decf
You are awesome, thank you!
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