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From: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
To: Zqiang <qiang.zhang@windriver.com>,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Alexander Potapenko <glider@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Matthias Brugger <matthias.bgg@gmail.com>
Cc: <kasan-dev@googlegroups.com>, <linux-mm@kvack.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>, <wsd_upstream@mediatek.com>,
	Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Subject: [PATCH v4 0/1] Fix object remain in offline per-cpu quarantine
Date: Mon, 7 Dec 2020 16:42:57 +0800	[thread overview]
Message-ID: <1607330578-417-1-git-send-email-Kuan-Ying.Lee@mediatek.com> (raw)

This patch fixes object remain in the offline per-cpu quarantine as
describe below.

Free objects will get into per-cpu quarantine if enable generic KASAN.
If a cpu is offline and users use kmem_cache_destroy, kernel will detect
objects still remain in the offline per-cpu quarantine and report error.

Register a cpu hotplug function to remove all objects in the offline
per-cpu quarantine when cpu is going offline. Set a per-cpu variable
to indicate this cpu is offline.

Changes since v4:
 - Rebase to linux-next
 - Remove the qlist_free for double free issue
 - Thanks Qiang, Qian

Changes since v3:
 - Add a barrier to ensure the ordering
 - Rename the init function

Changes since v2:
 - Thanks for Dmitry suggestion
 - Remove unnecessary code
 - Put offline variable into cpu_quarantine
 - Use single qlist_free_all call instead of iteration over all slabs
 - Add bug reporter in commit message

Kuan-Ying Lee (1):
  kasan: fix object remain in offline per-cpu quarantine

 mm/kasan/quarantine.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

-- 
2.18.0


WARNING: multiple messages have this Message-ID (diff)
From: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
To: Zqiang <qiang.zhang@windriver.com>,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Alexander Potapenko <glider@google.com>,
	"Dmitry Vyukov" <dvyukov@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Matthias Brugger <matthias.bgg@gmail.com>
Cc: wsd_upstream@mediatek.com,
	Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>,
	linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
	linux-mm@kvack.org, linux-mediatek@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 0/1] Fix object remain in offline per-cpu quarantine
Date: Mon, 7 Dec 2020 16:42:57 +0800	[thread overview]
Message-ID: <1607330578-417-1-git-send-email-Kuan-Ying.Lee@mediatek.com> (raw)

This patch fixes object remain in the offline per-cpu quarantine as
describe below.

Free objects will get into per-cpu quarantine if enable generic KASAN.
If a cpu is offline and users use kmem_cache_destroy, kernel will detect
objects still remain in the offline per-cpu quarantine and report error.

Register a cpu hotplug function to remove all objects in the offline
per-cpu quarantine when cpu is going offline. Set a per-cpu variable
to indicate this cpu is offline.

Changes since v4:
 - Rebase to linux-next
 - Remove the qlist_free for double free issue
 - Thanks Qiang, Qian

Changes since v3:
 - Add a barrier to ensure the ordering
 - Rename the init function

Changes since v2:
 - Thanks for Dmitry suggestion
 - Remove unnecessary code
 - Put offline variable into cpu_quarantine
 - Use single qlist_free_all call instead of iteration over all slabs
 - Add bug reporter in commit message

Kuan-Ying Lee (1):
  kasan: fix object remain in offline per-cpu quarantine

 mm/kasan/quarantine.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

-- 
2.18.0
_______________________________________________
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: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
To: Zqiang <qiang.zhang@windriver.com>,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Alexander Potapenko <glider@google.com>,
	"Dmitry Vyukov" <dvyukov@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Matthias Brugger <matthias.bgg@gmail.com>
Cc: wsd_upstream@mediatek.com,
	Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>,
	linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
	linux-mm@kvack.org, linux-mediatek@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 0/1] Fix object remain in offline per-cpu quarantine
Date: Mon, 7 Dec 2020 16:42:57 +0800	[thread overview]
Message-ID: <1607330578-417-1-git-send-email-Kuan-Ying.Lee@mediatek.com> (raw)

This patch fixes object remain in the offline per-cpu quarantine as
describe below.

Free objects will get into per-cpu quarantine if enable generic KASAN.
If a cpu is offline and users use kmem_cache_destroy, kernel will detect
objects still remain in the offline per-cpu quarantine and report error.

Register a cpu hotplug function to remove all objects in the offline
per-cpu quarantine when cpu is going offline. Set a per-cpu variable
to indicate this cpu is offline.

Changes since v4:
 - Rebase to linux-next
 - Remove the qlist_free for double free issue
 - Thanks Qiang, Qian

Changes since v3:
 - Add a barrier to ensure the ordering
 - Rename the init function

Changes since v2:
 - Thanks for Dmitry suggestion
 - Remove unnecessary code
 - Put offline variable into cpu_quarantine
 - Use single qlist_free_all call instead of iteration over all slabs
 - Add bug reporter in commit message

Kuan-Ying Lee (1):
  kasan: fix object remain in offline per-cpu quarantine

 mm/kasan/quarantine.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

-- 
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2020-12-07  8:44 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-07  8:42 Kuan-Ying Lee [this message]
2020-12-07  8:42 ` [PATCH v4 0/1] Fix object remain in offline per-cpu quarantine Kuan-Ying Lee
2020-12-07  8:42 ` Kuan-Ying Lee
2020-12-07  8:42 ` [PATCH v4 1/1] kasan: fix " Kuan-Ying Lee
2020-12-07  8:42   ` Kuan-Ying Lee
2020-12-07  8:42   ` Kuan-Ying Lee

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