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From: Oleg Nesterov <oleg@redhat.com>
To: Walter Wu <walter-zh.wu@mediatek.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>,
	Alexander Potapenko <glider@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Andrey Konovalov <andreyknvl@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jens Axboe <axboe@kernel.dk>,
	kasan-dev@googlegroups.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	wsd_upstream <wsd_upstream@mediatek.com>,
	linux-mediatek@lists.infradead.org
Subject: Re: [PATCH v2] task_work: kasan: record task_work_add() call stack
Date: Tue, 16 Mar 2021 18:54:56 +0100	[thread overview]
Message-ID: <20210316175455.GA25881@redhat.com> (raw)
In-Reply-To: <20210316024410.19967-1-walter-zh.wu@mediatek.com>

On 03/16, Walter Wu wrote:
>
> --- a/kernel/task_work.c
> +++ b/kernel/task_work.c
> @@ -34,6 +34,9 @@ int task_work_add(struct task_struct *task, struct callback_head *work,
>  {
>  	struct callback_head *head;
>
> +	/* record the work call stack in order to print it in KASAN reports */
> +	kasan_record_aux_stack(work);
> +
>  	do {
>  		head = READ_ONCE(task->task_works);
>  		if (unlikely(head == &work_exited))

Acked-by: Oleg Nesterov <oleg@redhat.com>


WARNING: multiple messages have this Message-ID (diff)
From: Oleg Nesterov <oleg@redhat.com>
To: Walter Wu <walter-zh.wu@mediatek.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>,
	Alexander Potapenko <glider@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Andrey Konovalov <andreyknvl@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jens Axboe <axboe@kernel.dk>,
	kasan-dev@googlegroups.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	wsd_upstream <wsd_upstream@mediatek.com>,
	linux-mediatek@lists.infradead.org
Subject: Re: [PATCH v2] task_work: kasan: record task_work_add() call stack
Date: Tue, 16 Mar 2021 18:54:56 +0100	[thread overview]
Message-ID: <20210316175455.GA25881@redhat.com> (raw)
In-Reply-To: <20210316024410.19967-1-walter-zh.wu@mediatek.com>

On 03/16, Walter Wu wrote:
>
> --- a/kernel/task_work.c
> +++ b/kernel/task_work.c
> @@ -34,6 +34,9 @@ int task_work_add(struct task_struct *task, struct callback_head *work,
>  {
>  	struct callback_head *head;
>
> +	/* record the work call stack in order to print it in KASAN reports */
> +	kasan_record_aux_stack(work);
> +
>  	do {
>  		head = READ_ONCE(task->task_works);
>  		if (unlikely(head == &work_exited))

Acked-by: Oleg Nesterov <oleg@redhat.com>


_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

WARNING: multiple messages have this Message-ID (diff)
From: Oleg Nesterov <oleg@redhat.com>
To: Walter Wu <walter-zh.wu@mediatek.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>,
	Alexander Potapenko <glider@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Andrey Konovalov <andreyknvl@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jens Axboe <axboe@kernel.dk>,
	kasan-dev@googlegroups.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	wsd_upstream <wsd_upstream@mediatek.com>,
	linux-mediatek@lists.infradead.org
Subject: Re: [PATCH v2] task_work: kasan: record task_work_add() call stack
Date: Tue, 16 Mar 2021 18:54:56 +0100	[thread overview]
Message-ID: <20210316175455.GA25881@redhat.com> (raw)
In-Reply-To: <20210316024410.19967-1-walter-zh.wu@mediatek.com>

On 03/16, Walter Wu wrote:
>
> --- a/kernel/task_work.c
> +++ b/kernel/task_work.c
> @@ -34,6 +34,9 @@ int task_work_add(struct task_struct *task, struct callback_head *work,
>  {
>  	struct callback_head *head;
>
> +	/* record the work call stack in order to print it in KASAN reports */
> +	kasan_record_aux_stack(work);
> +
>  	do {
>  		head = READ_ONCE(task->task_works);
>  		if (unlikely(head == &work_exited))

Acked-by: Oleg Nesterov <oleg@redhat.com>


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2021-03-16 17:55 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-16  2:44 [PATCH v2] task_work: kasan: record task_work_add() call stack Walter Wu
2021-03-16  2:44 ` Walter Wu
2021-03-16  2:44 ` Walter Wu
2021-03-16  6:34 ` Dmitry Vyukov
2021-03-16  6:34   ` Dmitry Vyukov
2021-03-16  6:34   ` Dmitry Vyukov
2021-03-16  6:34   ` Dmitry Vyukov
2021-03-16 14:33 ` Jens Axboe
2021-03-16 14:33   ` Jens Axboe
2021-03-16 14:33   ` Jens Axboe
2021-03-16 17:54 ` Oleg Nesterov [this message]
2021-03-16 17:54   ` Oleg Nesterov
2021-03-16 17:54   ` Oleg Nesterov
2021-03-18  0:30 ` Andrey Konovalov
2021-03-18  0:30   ` Andrey Konovalov
2021-03-18  0:30   ` Andrey Konovalov
2021-03-18  0:30   ` Andrey Konovalov

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