From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 84BD7158218 for ; Tue, 1 Oct 2024 23:25:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727825104; cv=none; b=AD0Su3P9YK17AM50n0T7JbsPo7H9otcBUSxc/gRQqgiaJmfTBVGSlxPH5Z2tiX4lRYL/r4UorpWO34tMQHR2oMgqpUpY8Dw9H2MT4uir9O2hf+YdTYEQRmWD6p39qO6Uy295kWlNCwlRM5GLpjy0eGbzUgsYDTpF0xitoPx01UA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727825104; c=relaxed/simple; bh=iTTpMomo4biBJZukm34VUI3wvGO70rAc2cXZ+6Lg4OU=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=PulcPNxchTYmT59s4Bg9HL4S5/75BPZA64q8Q2Jiz8OM6SzQUtH5XeRU3QGV314ghMCMmY4g2EgCQv5UmzKmtviDjofj2OcAYfkkD6/WIcLP4KUg+TVc0sfdvFEbQK37PK0Ig9oJ5D2xqMrDhRpds00tzy+e3emS9wTUyNMsYic= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f199.google.com with SMTP id e9e14a558f8ab-3a1a2af837dso3160445ab.1 for ; Tue, 01 Oct 2024 16:25:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1727825102; x=1728429902; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=UsMQId/XwYhOxE9d7W62Z2F688TIyrJGVMr93l3gO0Y=; b=oLMXR5M0eUlG4VMdVj43HhUHfdqm5F+qt+Yj2NSMqGKfsuEavBMTXQwGWwk5+KDiJK BZ8JEO1c9ldd55+/FscZ54AxsubkA6mbPCWpsJ9OHq7YA4SDlViemQ4YLpSmJgThL91D 0DRGzgzMsnlnSKdnRY6ih7jP2Nz6EEhrLZ4MeNPVxFmgcoO2BsjG4c9FLidbwew9P3oM VDubFuATc9rT1unJ8glbm4zbffEdXRIy+nJSGw8xXwijh8lgKv7p9aDJqvK8eOZGTSWH +MFru3VDAjMZJ7Qmj+bQIbVsJMwkKfnL9QBGR2wCvvziZ5bPFnbR8FAfGs/vFmW6St0R Deiw== X-Forwarded-Encrypted: i=1; AJvYcCXj5vDDLFAXf3J8aXM4BqNPbxuStfIxv7G1m8PbdwVeOH9UCunK4GgfDTgqCcbQzyDs7A/MsM8gGJvUKOg=@vger.kernel.org X-Gm-Message-State: AOJu0Yz7+NsFFU8q3vivR7+Dyta20tz1X1K+TIfIY9bI5LEhJb5V0Fcu t31mfmrxh4xambGW8otTNPzoekJKhjWqxRbHW5fYe9vFf7CeSCMMlxQcv7Os2EP/syZ//x5aTKu wVk+D7gQfTF/hmW60507rSc1n11TAafCo9VbR6lC2ZXu7Xnv8I/78PhM= X-Google-Smtp-Source: AGHT+IF9vRyi7062yAWYdDjb45E9WNZeDP9QACERv5jKJ9PqoQsqctwe/rnQ6dkNdqAT1LDfYnKZHffsTcBkFNnObdN3Dpslkl7v Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:160e:b0:39f:4e36:4b93 with SMTP id e9e14a558f8ab-3a35eb0c614mr36026985ab.6.1727825102642; 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" 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