lkml.org 
[lkml]   [2020]   [Sep]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 3/6] kasan: print timer and workqueue stack
Date
The aux_stack[2] is reused to record the call_rcu() call stack,
timer init call stack, and enqueuing work call stacks. So that
we need to change the auxiliary stack title for common title,
print them in KASAN report.

Signed-off-by: Walter Wu <walter-zh.wu@mediatek.com>
Suggested-by: Marco Elver <elver@google.com>
Acked-by: Marco Elver <elver@google.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
---

v2:
- Thanks for Marco suggestion.
- We modify aux stack title name in KASAN report
in order to print call_rcu()/timer/workqueue stack.

---
mm/kasan/report.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 4f49fa6cd1aa..886809d0a8dd 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -183,12 +183,12 @@ static void describe_object(struct kmem_cache *cache, void *object,

#ifdef CONFIG_KASAN_GENERIC
if (alloc_info->aux_stack[0]) {
- pr_err("Last call_rcu():\n");
+ pr_err("Last potentially related work creation:\n");
print_stack(alloc_info->aux_stack[0]);
pr_err("\n");
}
if (alloc_info->aux_stack[1]) {
- pr_err("Second to last call_rcu():\n");
+ pr_err("Second to last potentially related work creation:\n");
print_stack(alloc_info->aux_stack[1]);
pr_err("\n");
}
--
2.18.0
\
 
 \ /
  Last update: 2020-09-24 06:11    [W:0.045 / U:1.752 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site