Re: [RFC PATCH 10/21] kernel-hacking: Make DEBUG_{LIST,PLIST,SG,NOTIFIERS} non-debug options

[Greg KH]

On Tue, Mar 24, 2020 at 03:36:32PM +0000, Will Deacon wrote:
> The CONFIG_DEBUG_{LIST,PLIST,SG,NOTIFIERS} options can provide useful
> security hardening properties outside of debug scenarios. For example,
> CVE-2019-2215 and CVE-2019-2025 are mitigated with negligible runtime
> overhead by enabling CONFIG_DEBUG_LIST, and this option is already
> enabled by default on many distributions:
> 
> https://googleprojectzero.blogspot.com/2019/11/bad-binder-android-in-wild-exploit.html
> 
> Rename these options across the tree so that the naming better reflects
> their operation and remove the dependency on DEBUG_KERNEL.
> 
> Cc: Maddie Stone <maddiestone@xxxxxxxxxx>
> Cc: Jann Horn <jannh@xxxxxxxxxx>
> Cc: Kees Cook <keescook@xxxxxxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx
> Cc: Paul E. McKenney <paulmck@xxxxxxxxxx>
> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> Signed-off-by: Will Deacon <will@xxxxxxxxxx>

Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>