On Thu, Aug 31, 2017 at 4:45 PM, Dmitry Torokhov
[off-list ref] wrote:

On Thu, Aug 31, 2017 at 4:29 PM, Kees Cook [off-list ref] wrote:

quoted

In several places, .data is checked for initialization to gate early
calls to del_timer_sync(). Checking for .function is equally valid, so
switch to this in all callers.

Not seeing the rest of patches it is unclear from the patch
description why this is needed/wanted.

The CC list would have been really giant, but here is the first patch
and the earlier series list:

https://lkml.org/lkml/2017/8/31/904
https://lkml.org/lkml/2017/8/30/760

tl;dr: We're going to switch all struct timer_list callbacks to get
the timer pointer as the argument instead of from the .data field.
This patch is one step in removing open-coded users of the .data
field.

-Kees

-- 
Kees Cook
Pixel Security