On Sun, Dec 08, 2019 at 01:53:27PM +0000, Ben Hutchings wrote: > 3.16.79-rc1 review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Ido Schimmel <idosch@xxxxxxxxxxxx> > > commit 1851799e1d2978f68eea5d9dff322e121dcf59c1 upstream. > > thermal_zone_device_unregister() cancels the delayed work that polls the > thermal zone, but it does not wait for it to finish. This is racy with > respect to the freeing of the thermal zone device, which can result in a > use-after-free [1]. > > Fix this by waiting for the delayed work to finish before freeing the > thermal zone device. Note that thermal_zone_device_set_polling() is > never invoked from an atomic context, so it is safe to call > cancel_delayed_work_sync() that can block. Ben, Wei Wang (copied) found a problem with this patch and fixed it: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=163b00cde7cf2206e248789d2780121ad5e6a70b I believe you should take both patches to your tree. Thanks
