Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Revert "x86/uaccess, ftrace: Fix ftrace_likely_update() vs. SMAP"

Browse source 
This reverts commit 1a3188d737, which was
upstream commit 4a6c91fbdef846ec7250b82f2eeeb87ac5f18cf9.

On Tue, Jun 25, 2019 at 09:39:45AM +0200, Sebastian Andrzej Siewior wrote:
>Please backport commit e74deb11931ff682b59d5b9d387f7115f689698e to
>stable _or_ revert the backport of commit 4a6c91fbdef84 ("x86/uaccess,
>ftrace: Fix ftrace_likely_update() vs. SMAP"). It uses
>user_access_{save|restore}() which has been introduced in the following
>commit.

Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sasha Levin 2019-06-25 07:36:40 -04:00 committed by Greg Kroah-Hartman
parent 85a3b1ef96
commit fec1a13bdf
1 changed files with 0 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
kernel/trace/trace_branch.c
View file

@ -205,8 +205,6 @@ void trace_likely_condition(struct ftrace_likely_data *f, int val, int expect)
void ftrace_likely_update(struct ftrace_likely_data *f, int val,
int expect, int is_constant)
{
unsigned long flags = user_access_save();
/* A constant is always correct */
if (is_constant) {
f->constant++;
@ -225,8 +223,6 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
f->data.correct++;
else
f->data.incorrect++;
user_access_restore(flags);
}
EXPORT_SYMBOL(ftrace_likely_update);