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Mon, 11 Aug 2025 16:29:56 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 57BGTtYc030278 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 11 Aug 2025 16:29:55 GMT Received: from [10.216.45.192] (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Mon, 11 Aug 2025 09:29:51 -0700 Message-ID: <25f6b30a-75fd-429c-ad3a-29cfc3a677a8@quicinc.com> Date: Mon, 11 Aug 2025 21:59:49 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm: swap: check for xa_zero_entry() on vma in swapoff path To: Lorenzo Stoakes CC: , , , , , , , , , References: <20250808092156.1918973-1-quic_charante@quicinc.com> <46d4a5bb-5734-40b4-a5f1-3094500ef1c3@lucifer.local> Content-Language: en-US From: Charan Teja Kalla In-Reply-To: <46d4a5bb-5734-40b4-a5f1-3094500ef1c3@lucifer.local> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODExMDA3NSBTYWx0ZWRfX3cOyk7cOWaNP X9O6YD0qm4tN42PMd2cVWr4rmsRn728khHrJMWs/qobrWaMvg4RtLXsudawgppGwIfXcLYEMTDs KnJgyKSAszS0V0IekerdkFlSTN99leBMVSw8npoeg96NEoLSoHnIK3u2IiPt5XjYWVk1to6e/Wm OUV+h0+nzky3WHvhSC8TQtVBrgcl17/6MIgzxwGyHlsA1T9y+BziezB4rO9RorilhzhU64s+5t2 GSiQawACZX9kw+8zg++Ru1ZBl32Yq1KnYG5s3iScUlYZfYPIoSCpr721dCqXJJJFZnZZI4W5PY8 MP+sENMEGy/NXlmfHIeTcC+PSP83FfB21witL+OVFBmA7W0d2i7H+4vFVL4cM17ZxmZwNzMnxfq 4CBQW2NC X-Authority-Analysis: v=2.4 cv=TLZFS0la c=1 sm=1 tr=0 ts=689a1a84 cx=c_pps a=ouPCqIW2jiPt+lZRy3xVPw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=GEpy-HfZoHoA:10 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=Eu7-4bY5xJMfsWnsbBEA:9 a=NqO74GWdXPXpGKcKHaDJD/ajO6k=:19 a=QEXdDO2ut3YA:10 a=QYH75iMubAgA:10 X-Proofpoint-GUID: dgL5N7pKdAMMncEIiKUWYf5ebzNIeq1P X-Proofpoint-ORIG-GUID: dgL5N7pKdAMMncEIiKUWYf5ebzNIeq1P X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-11_03,2025-08-11_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 phishscore=0 malwarescore=0 spamscore=0 priorityscore=1501 bulkscore=0 adultscore=0 impostorscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508110075 On 8/11/2025 5:37 PM, Lorenzo Stoakes wrote: > Any syzbot link or further information as to where this bug was found? Was this > on your system? > > Has this happened in reality or due to fault injection? Sorry, missed to mention this information on the commit message. Yes this is really reported on the 6.12 LTS kernel, while running the tests on the device farm, though, reproduction rate is very low. Thanks Charan