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Mon, 12 May 2025 14:27:06 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AC25D200BD; Mon, 12 May 2025 14:27:06 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 99755200BC; Mon, 12 May 2025 14:27:06 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTPS; Mon, 12 May 2025 14:27:06 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 55669) id 535AFE0315; Mon, 12 May 2025 16:27:06 +0200 (CEST) From: Alexander Gordeev To: Andrew Morton , Andrey Ryabinin , Daniel Axtens , Harry Yoo Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, kasan-dev@googlegroups.com, linux-s390@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH v7 0/1] kasan: Avoid sleepable page allocation from atomic context Date: Mon, 12 May 2025 16:27:05 +0200 Message-ID: X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTEyMDE0NyBTYWx0ZWRfX4J+iA0krVspB fQXC+GPt+teDfwRbINmzxCYUQOg8HemzNXsTeqjzpOjeOYBI0CnzDijCkjgXOZXdWNhRCgRDnaC +qE1EMDLjSgRkh2PH6GM7/G6SHwdBpu7Ayg1OtUxE10edQ+JDp2UvFh0v45pDUxwMepS4IFwUBG uZZpDAU5FpnryRkLfg/Gu+P8WMobEifo8tJWz1nH5jTJqwhruQvOtcILjNad4G053qFfNU7uk01 lHlw7uTQp6IlWDDC6OxheOpA8lS1ssT34q07RwafLp7DxKanPq/ZtLc/hJTchc1WtX5W97W0Pri Fy+MOPMwArVWO6gKRFHx5ROhIjszTPU77LRmv/xx9d5Yfla2BiX4Qm0BosBgIEUvadFAvl5par0 5AAzwoHXreVc2ZNMcAZ2PXsQm7fDD0+dega9J0HPPKQwuTdp1dQ34D1yNnIJtV9/OFcM7GhK X-Authority-Analysis: v=2.4 cv=J4mq7BnS c=1 sm=1 tr=0 ts=6822053d cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=dt9VzEwgFbYA:10 a=gOThRBi6ftkcs8ZoH28A:9 a=zZCYzV9kfG8A:10 X-Proofpoint-ORIG-GUID: qnJ4pF3Y3jPbDL6Rvh_FxR_LAFkxUmHH X-Proofpoint-GUID: vE3qFts5VaV5FnJpIAEOEtiXGRMzf5Ec X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-05-12_04,2025-05-09_01,2025-02-21_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 adultscore=0 lowpriorityscore=0 bulkscore=0 mlxlogscore=680 priorityscore=1501 mlxscore=0 impostorscore=0 malwarescore=0 phishscore=0 clxscore=1015 spamscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2504070000 definitions=main-2505120147 Hi All, Chages since v6: - do not unnecessary free pages across iterations Chages since v5: - full error message included into commit description Chages since v4: - unused pages leak is avoided Chages since v3: - pfn_to_virt() changed to page_to_virt() due to compile error Chages since v2: - page allocation moved out of the atomic context Chages since v1: - Fixes: and -stable tags added to the patch description Thanks! Alexander Gordeev (1): kasan: Avoid sleepable page allocation from atomic context mm/kasan/shadow.c | 76 ++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 62 insertions(+), 14 deletions(-) -- 2.45.2