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Tue, 13 May 2025 15:40:28 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4E17F20102; Tue, 13 May 2025 15:21:03 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3AAFE20101; Tue, 13 May 2025 15:21:03 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTPS; Tue, 13 May 2025 15:21:03 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 55669) id CCFCBE0609; Tue, 13 May 2025 17:21:02 +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 v8 0/1] kasan: Avoid sleepable page allocation from atomic context Date: Tue, 13 May 2025 17:21:01 +0200 Message-ID: X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=K8ciHzWI c=1 sm=1 tr=0 ts=682367ef cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=dt9VzEwgFbYA:10 a=M4n5Zv9w_bjhLjlc4U8A:9 a=zZCYzV9kfG8A:10 X-Proofpoint-GUID: DBBehTTBvX9qsC78fS4B-Pq9qcDH0x5W X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTEzMDE0OCBTYWx0ZWRfX3Ro2qgunbtst YpiEJWshZEpwgFgNh6DUgLqham72fs4BvvKMKutOoHPSH07AlpYe7pQ5YCi2HdZ5nILC75uCiju IWYImiPzfWf3podYFZOjSls1rcOdgk72yDa3rolzKL4vg7MxTtRRzOD7Zs54dCpcFIWuxuu+EK0 QkIJ/BRGoGmhUCBjzaDyz1IMReBDty2ghHIQLCL1vaAhGz9JkAgbrDVty+dUOHB1jXN44t7HVJK cMtIYLYwLwmus3mL71kB6cl1K28JDvLF2O3KG8dkNu9dJXSM3ofh9geWQ4w/j6r7+O4igy6meEp 0nXf51BmQu16OcHzaLETtDpfMQ+PxaAqgY6hNFo+C5dr11+LBz1O0Gz/NEb1ZL+oousbZmNyN0g kS3cSLrkhmXIK/w+vptnwdeTNCkhyZ72QS3kKi57VyvofCfZSG4SaN1iUvPpz4AIUvoDujXn X-Proofpoint-ORIG-GUID: eeJyLkhC8F1qa6Wbqxc-xE5X7ub4YSI3 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=2025-05-13_03,2025-05-09_01,2025-02-21_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 impostorscore=0 bulkscore=0 suspectscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 priorityscore=1501 mlxlogscore=721 phishscore=0 adultscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2504070000 definitions=main-2505130148 Hi All, Chages since v7: - drop "unnecessary free pages" optimization - fix error path page leak 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 | 77 ++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 63 insertions(+), 14 deletions(-) -- 2.45.2