In the Linux kernel, the following vulnerability has been resolved: gpio: mpsse: ensure worker is torn down When an IRQ worker is running, unplugging the device would cause a crash. The sealevel hardware this driver was written for was not hotpluggable, so I never realized it. This change uses a spinlock to protect a list of workers, which it tears down on disconnect.
https://git.kernel.org/stable/c/472d900c8bcac301ae0e40fdca7db799bd989ff5
https://git.kernel.org/stable/c/179ef1127d7a4f09f0e741fa9f30b8a8e7886271