lkml.org 
[lkml]   [2021]   [May]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/2] kfence: only handle kernel mode faults
Date
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
---
mm/kfence/core.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/mm/kfence/core.c b/mm/kfence/core.c
index bc15e3cb71d5..161df492750c 100644
--- a/mm/kfence/core.c
+++ b/mm/kfence/core.c
@@ -813,6 +813,9 @@ bool kfence_handle_page_fault(unsigned long addr, bool is_write, struct pt_regs
enum kfence_error_type error_type;
unsigned long flags;

+ if (user_mode(regs))
+ return false;
+
if (!is_kfence_address((void *)addr))
return false;

--
2.25.1
\
 
 \ /
  Last update: 2021-05-14 11:22    [W:0.055 / U:0.536 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site