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b=N/7v+bPw6brPpDF03HP7vlSS1nF5TZl1p3jhZ0YioAXqKqJ5ZXrd0q5eMeeWDSnmq yPnvSi73rvqzbptqGrUvXzgV1PCApu5hGIFm3pygZoMyU/AilhxVbwYiBV1FWNjGmB dbf0UvZjeZujb2krx+iXs70wXYWdJNrnMsPBEnhQehgJTBTOoeV77R4+yeURq1EaLG kXCXGk0io/HC7Z+ggNwSI2odExPgFKsEbMT7+imvSeI/4TrKJZFWdjNM8zDSioRYWo O1WmNrVfrRALQIWGqKT6IHrLRSJltatSz+jHgxGP2p9NkmRmAO/JPOQJE6bUtpk+Pq hE90HTYFpWFQg== Message-ID: Date: Thu, 19 Mar 2026 08:22:49 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [syzbot] [mm?] kernel BUG in collapse_scan_file To: syzbot , Liam.Howlett@oracle.com, akpm@linux-foundation.org, baohua@kernel.org, baolin.wang@linux.alibaba.com, dev.jain@arm.com, lance.yang@linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org, ljs@kernel.org, npache@redhat.com, ryan.roberts@arm.com, syzkaller-bugs@googlegroups.com, ziy@nvidia.com References: <69bba3c0.050a0220.227207.002b.GAE@google.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: <69bba3c0.050a0220.227207.002b.GAE@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Stat-Signature: 1tcazwdc9f833xgh71kiu68n6wcputfk X-Rspam-User: X-Rspamd-Queue-Id: 214E780003 X-Rspamd-Server: rspam12 X-HE-Tag: 1773904974-174642 X-HE-Meta: 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 5b3QYGua 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 3/19/26 08:20, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 95c541ddfb08 Add linux-next specific files for 20260316 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=15ccc216580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=ed431987028345c6 > dashboard link: https://syzkaller.appspot.com/bug?extid=8961cb270ae74b4129fb > compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12f778da580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12cc006a580000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/c40f27ad73d8/disk-95c541dd.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/bd811888f684/vmlinux-95c541dd.xz > kernel image: https://storage.googleapis.com/syzbot-assets/3b72363d7dbd/bzImage-95c541dd.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+8961cb270ae74b4129fb@syzkaller.appspotmail.com @Nico, maybe related to your changes? -- Cheers, David