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| author | Walter Wu <walter-zh.wu@mediatek.com> | 2020-12-14 19:09:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 12:13:42 -0800 |
| commit | ef13346123fa7bef3cf62e9bf1efe9d7b274fa20 (patch) | |
| tree | 576f86408cadfa17777dae597d9c36e3de06a30a /mm/kasan | |
| parent | e89a85d63fb2e187f5afcbf83c12743132596563 (diff) | |
| download | linux-ef13346123fa7bef3cf62e9bf1efe9d7b274fa20.tar.bz2 | |
kasan: print workqueue stack
The aux_stack[2] is reused to record the call_rcu() 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.
Link: https://lkml.kernel.org/r/20201203022715.30635-1-walter-zh.wu@mediatek.com
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>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/kasan')
| -rw-r--r-- | mm/kasan/generic.c | 3 | ||||
| -rw-r--r-- | mm/kasan/report.c | 4 |
2 files changed, 2 insertions, 5 deletions
diff --git a/mm/kasan/generic.c b/mm/kasan/generic.c index 248264b9cb76..30c0a5038b5c 100644 --- a/mm/kasan/generic.c +++ b/mm/kasan/generic.c @@ -339,9 +339,6 @@ void kasan_record_aux_stack(void *addr) object = nearest_obj(cache, page, addr); alloc_info = get_alloc_info(cache, object); - /* - * record the last two call_rcu() call stacks. - */ alloc_info->aux_stack[1] = alloc_info->aux_stack[0]; alloc_info->aux_stack[0] = kasan_save_stack(GFP_NOWAIT); } diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 00a53f1355ae..5a0102f37171 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -185,12 +185,12 @@ 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"); } |