diff options
| author | Walter Wu <[email protected]> | 2020-12-14 19:09:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2020-12-15 12:13:42 -0800 |
| commit | ef13346123fa7bef3cf62e9bf1efe9d7b274fa20 (patch) | |
| tree | 576f86408cadfa17777dae597d9c36e3de06a30a | |
| parent | e89a85d63fb2e187f5afcbf83c12743132596563 (diff) | |
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/[email protected]
Signed-off-by: Walter Wu <[email protected]>
Suggested-by: Marco Elver <[email protected]>
Acked-by: Marco Elver <[email protected]>
Reviewed-by: Dmitry Vyukov <[email protected]>
Reviewed-by: Andrey Konovalov <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Lai Jiangshan <[email protected]>
Cc: Matthias Brugger <[email protected]>
Cc: Tejun Heo <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -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"); } |