Re: [PATCH V2] locking/rt: Fix the incorrect RCU protection in rt_spin_unlock()

[Sebastian Andrzej Siewior]

On 2026-06-19 14:52:08 [+0200], Thomas Gleixner wrote:
> rt_spin_unlock() releases the RCU protection before unlocking the
> lock. That opens the door for the following UAF scenario:
…
> Fixes: 0f383b6dc96e ("locking/spinlock: Provide RT variant")
> Reported-by: syzbot+000c800a02097aaa10ed@xxxxxxxxxxxxxxxxxxxxxxxxx
> Decoded-by: Jann Horn <jannh@xxxxxxxxxx>
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx

Reviewed-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>

Sebastian