ich777/linux_media
1
0
Fork 0
mirror of https://github.com/tbsdtv/linux_media.git synced 2025-07-23 12:43:29 +02:00
Code Issues Packages Projects Releases Wiki Activity

latent_entropy: Mark functions with __latent_entropy

Browse Source 
The __latent_entropy gcc attribute can be used only on functions and
variables.  If it is on a function then the plugin will instrument it for
gathering control-flow entropy. If the attribute is on a variable then
the plugin will initialize it with random contents.  The variable must
be an integer, an integer array type or a structure with integer fields.

These specific functions have been selected because they are init
functions (to help gather boot-time entropy), are called at unpredictable
times, or they have variable loops, each of which provide some level of
latent entropy.

Signed-off-by: Emese Revfy <re.emese@gmail.com>
[kees: expanded commit message]
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Emese Revfy
2016-06-20 20:42:34 +02:00
committed by Kees Cook
parent 38addce8b6
commit 0766f788eb
19 changed files with 37 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/softirq.c
View File

@@ -482,7 +482,7 @@ void __tasklet_hi_schedule_first(struct tasklet_struct *t)
}
EXPORT_SYMBOL(__tasklet_hi_schedule_first);
static void tasklet_action(struct softirq_action *a)
static __latent_entropy void tasklet_action(struct softirq_action *a)
{
struct tasklet_struct *list;
@@ -518,7 +518,7 @@ static void tasklet_action(struct softirq_action *a)
}
}
static void tasklet_hi_action(struct softirq_action *a)
static __latent_entropy void tasklet_hi_action(struct softirq_action *a)
{
struct tasklet_struct *list;