Re: [PATCH wireless-next] wifi: mac80211: fix use-after-free risk in sta debugfs removal
From: Moon Hee Lee <hidden>
Date: 2025-07-24 07:49:08
Also in:
linux-kernel-mentees, linux-wireless, lkml
From: Moon Hee Lee <hidden>
Date: 2025-07-24 07:49:08
Also in:
linux-kernel-mentees, linux-wireless, lkml
On Thu, Jul 24, 2025 at 12:18 AM Johannes Berg [off-list ref] wrote:
Maybe so, but it really looks like a bandaid?! Why are we trying to remove it twice in the first place?
Thanks, Johannes. I agree this patch is only defensive and does not address the root cause. I am currently tracing the sta_info_destroy flow to determine whether this is caused by a duplicate free or an unsynchronized access to sta->debugfs_dir. If the race is confirmed, I will follow up with a more complete fix that properly handles the lifecycle.