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Thu, 15 May 2025 14:25:35 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2E3CB2004B; Thu, 15 May 2025 13:55:39 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1B6E520040; Thu, 15 May 2025 13:55:39 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTPS; Thu, 15 May 2025 13:55:39 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 55669) id CFB7AE0697; Thu, 15 May 2025 15:55:38 +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 v9 0/1] kasan: Avoid sleepable page allocation from atomic context Date: Thu, 15 May 2025 15:55:37 +0200 Message-ID: X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-kernel@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=IqAecK/g c=1 sm=1 tr=0 ts=6825f962 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=dt9VzEwgFbYA:10 a=M4n5Zv9w_bjhLjlc4U8A:9 a=zZCYzV9kfG8A:10 X-Proofpoint-ORIG-GUID: gsjWp-Ng0dC36Dn2cBR5PS3eptApZOz5 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTE1MDEzOSBTYWx0ZWRfXxmHO/rxvOS6Z 3fEjEqJhV3MG0Cl4RIn0X+tlTvzgH63kEaBU7Pf6gPK3R7u6sHrFJaENBG6tOAKgxduSdeiEMVq Mi/mFGc8J4pov1w/K5o3hWHd2YHZ4kbxtGvZLV+jK0COKPnCmK1J5oUJGiuqapxWqBy63x38TPk F5itjgMCxz21A0joByb3ds2Mak4sk6O8MjzIeJVqRwTKy2VfcXTgCw8OSS6Hi3/qxZarlSX7P3E wx2WamWYFoce12j03HoPx0FMPaLNKLhwWvEkllkaSI3H/Elr1A9IcQxsICkLwdBpSm6ObbAqTIh 7ftPBMdouk3FdIJAN779vddxznFJg4K7m8DlTUwaAzNKN9tMFGMTe41togkHfQ7T39WUb0GVdYF nRdwdoZdkpyIQ4rwX6c3jJy+Pwc2yH0nAC4oObHuF6Ecy6mxm7ow1jIEb82fy74/3wkRhW7r X-Proofpoint-GUID: Hz4sHBe_8I6zp0zDv4Z_aaQ_3JO_OM53 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=2025-05-15_06,2025-05-14_03,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 phishscore=0 impostorscore=0 priorityscore=1501 clxscore=1015 spamscore=0 mlxlogscore=735 bulkscore=0 suspectscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505070000 definitions=main-2505150139 Hi All, I dropped Harry Yoo's Reviewed-by from this version. Chages since v8: - fixed page_owner=on issue preventing bulk allocations on x86 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 | 92 +++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 78 insertions(+), 14 deletions(-) -- 2.45.2