Re: [PATCH] profiling: prevent stale prof_cpu_mask access on init failure

[Tristan Madani]

On 2026/06/22 07:49, Tetsuo Handa wrote:
> NAK. This is a use-after-free read bug.
>
> Correct fix is to remove a commit which adds "free_cpumask_var(prof_cpu_mask);".

You're right, the flag check races with the free. v2 will just
remove the free_cpumask_var() call instead.

> Which tree are you talking about?

This is for stable (6.1.y, 6.6.y, 6.8.y) where prof_cpu_mask
still exists.

Thanks,
Tristan