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Tue, 01 Oct 2024 16:25:02 -0700 (PDT) Date: Tue, 01 Oct 2024 16:25:02 -0700 In-Reply-To: <66faaa4e.050a0220.aab67.0032.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <66fc84ce.050a0220.f28ec.04db.GAE@google.com> Subject: Re: [syzbot] [mm?] KASAN: out-of-bounds Read in copy_from_kernel_nofault From: syzbot To: akpm@linux-foundation.org, andreyknvl@gmail.com, dvyukov@google.com, glider@google.com, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, ryabinin.a.a@gmail.com, snovitoll@gmail.com, syzkaller-bugs@googlegroups.com, vincenzo.frascino@arm.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 9BF3EC000E X-Stat-Signature: gs75pn6qd18csxts9djbwebm4ckwnoke X-Rspam-User: X-HE-Tag: 1727825103-771286 X-HE-Meta: U2FsdGVkX1/sqJjRUh/lNj2TWdzacEfQ1Vp44Z0khkLVj4PpQH9eYAtcwlVF5JGehdH/L4YNuEs23EK4NfFc06gyXygNHv2oIyorh59z0Xf4YjsNgOSL1/m4D/+ybIgIv8tQHqrk6TfZO5t1HWDj7mpHXaRaFeMVw6joIHLjMBUTljIGzRyumfGN9x7EfcmL7fGDtEFn3tBiXODt47iUE+OI75Vhx+yy/gMwxYtAw+T62NkCX9rOpECBC+obe6F2G13zJSuLE8TmZRstcZ9O5i9kEeiXnrlp20bEoaJ/zFh4CI1X66gzzQmcUip0hOQLFOjSLivSiuM9F70DmnR+kB2Q1sc1kutQxN2qiDrJm9ZtiBwEzuCBJ71JsEetp3QfgOBJR9GNDwAYLNVOf+VejZj0ZgVAb+rMsgFx9MeBoZp2UTlxr6dThqdSly6xkViRoKLfnbuIFOawS9iB7RhYb0R1LN38BAWEKXCs+YA95jlLOdMIx++lJu/7TRzK4weobml3De7BU8NpmoPl8WoShtGHpEY3OlLpOjuMqCTIaGz+iPdjqZoDmf8griyHav9ia8EyDcW97o+wJKMzsWjBbd1aTXQrYw0c3tQ12Yxp++cscWToOTs1CJkpIHbTTJV75XumCeNE5s0YtfSLxmlzGhthrSiJ6gGpq8d0HHyvhXLkDqh/Y7480pSMWjlU75ZU6aHzRj/DkuCQFSxjIzYrG+F+Mw+MHOJm4T1O0XSAecGqoYJgUSbQ7mK87RIehoXJChwtEp7/Lx2hJpuTr54ExyP0B98awLkk/0RVLAGyRn0OM6ExduSN51YFzCFJ+GBYkE5t+Ejyz8pZuX/Atu00+6BA1K364srgtH0twlMCu6kI2IKlBikL58Iqsu67fHLyVUGw2+KBDMUJa3I4PlPr5z9X53Hh5261eh5Cglq7DzmK3xIZSnA2Ox9Ti9zVpVOXJ4Ne/uKkRUFY4UOEWFz JRRcYGBa 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 RZX7H/63 TYQX20bODGTsrpKVNtvNNpkdzqoUgEB+aMymyNOdMDq/hlwnMwcEuvslHSuauwoKpfhkVa0UBnz4nIC/NgTWmp/MFXQOiOIhSgyfS/nyEeXkBM3ckrhlFWLgeohSCkZquAruF0tiNXhk5qDD7irsE0MyJKKqdFbqTNszXvoZIj6VdfFIc3vf0cSx3PSQvAw/fUo7LHT3eI7QobxK0WMo0A== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: syzbot has bisected this issue to: commit 88ad9dc30bbf1b08bd1dddedf9ff39019f469b8f Author: Sabyrzhan Tasbolatov Date: Fri Sep 27 15:14:38 2024 +0000 mm, kasan: instrument copy_from/to_kernel_nofault bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15848307980000 start commit: cea5425829f7 Add linux-next specific files for 20240930 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=17848307980000 console output: https://syzkaller.appspot.com/x/log.txt?x=13848307980000 kernel config: https://syzkaller.appspot.com/x/.config?x=41a28720ed564c6a dashboard link: https://syzkaller.appspot.com/bug?extid=61123a5daeb9f7454599 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14dbf127980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12dbf127980000 Reported-by: syzbot+61123a5daeb9f7454599@syzkaller.appspotmail.com Fixes: 88ad9dc30bbf ("mm, kasan: instrument copy_from/to_kernel_nofault") For information about bisection process see: https://goo.gl/tpsmEJ#bisection