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 1BF982E2EF8 for ; Fri, 24 Oct 2025 20:10:02 +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=1761336604; cv=none; b=p0Ml16A93VqxepZJUdSP6Omg9Ei2k/ZbgSFolDC1LfwiG0YV4dsxrMHx+kf0S4Z6fv7aJWBqCCaq0V2ePgEk8nGnIWlwRSMHx9fxK+hpNJKpZDwX4WZDF4yysOoEyAgwuwvhTmzbeGJch1Rkue6VeMtGOdFNvQ/1ZJUaJIFo74U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761336604; c=relaxed/simple; bh=5e1z4X0GXfz+sXjtmG8f7llpCLE6qws2zHAV//pxovg=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=EBxolDRjK5TKTLRcuHbMFljjVh9O62WoN/Hmhb2ixbq0xdQNbc2ZbRiLtGWaDMgPjG2uYwKYSrDwtXM127EyboBjURae+wXVFcwIRd/XzimjMi/NCZk3INDbUWN2CD+YxfniPuomHg+BS9VCntCsnW/1PrHPke4cZHMLeJ4edd0= 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-430db5635d6so32446585ab.3 for ; Fri, 24 Oct 2025 13:10:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761336602; x=1761941402; 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=pD5EQC3sKQgvZOVzVKbz3HY4CWX0jjmoHtrgq7Vyt5g=; b=VZYxVE1hckK3DwAkMln64HXeZS/FfHaRNJlOwVKnqIb6kVG9jsFQThWPAvrCpgZfR4 GEU8jva/mgKSp/MNTKTT2WiOa05lhIxnGD50Jfh9Y5NoFYPREuZKhz8BDsEaeyRQbeRH KOhTzlacfADhkxNTJKgOgxBIc+IN3qY/3CDBUlrythAEVHji3LMPfiHckVyFXYSGBi9L omlmsWV2n1oPvhMz2+4yL9a/2QL3sTdKb6sfwTr0Nw/Azwj/YeeiDwuHu0+s0Nmc+sOy TtWaxRzCYiX4aTPK9G0W/ETABxJtZI/YWiYY+HmuHt33kxhEL3T7S3lLImLBBeojjlAp XEiA== X-Forwarded-Encrypted: i=1; AJvYcCU94VrzLi9qp47xSkdhsR9hoj2E0KFR32MOmEhw4OuHV8//k/ZewXl165/4q0wmL91lbZs=@vger.kernel.org X-Gm-Message-State: AOJu0Yzd9ui1wEc1a3UGGIbHhRQQcZpRbSvrpvRTUFvV8eCOU1KxHG+H 04hXLS5OQaQDqsHSVcDnVTBfkwsWxaID0W+PXXnuy8GIyyRrA9N2gqKmhE8LwUmQnVIMA/pHkQ3 NVfjOhPu4YsFEWdo8/6dhDVBC4EdXRCh13CojhxTNfW5Xs6rFN/fvJA8jAmg= X-Google-Smtp-Source: AGHT+IGlUpe7cydcYsCSWlW6XihJFInJ5PrrM/WDK2B5vlav5c+q5ILM6EBm0u8n69E78Yxpsybu0+hW5MT50ZjVBupDnAav8Nfe Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a92:cda3:0:b0:3f3:4562:ca92 with SMTP id e9e14a558f8ab-430c525f520mr220412755ab.10.1761336602321; Fri, 24 Oct 2025 13:10:02 -0700 (PDT) Date: Fri, 24 Oct 2025 13:10:02 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68fbdd1a.a00a0220.9662e.000c.GAE@google.com> Subject: Re: [syzbot] [kvm?] KASAN: slab-use-after-free Write in kvm_gmem_release From: syzbot To: david@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, seanjc@google.com, syzkaller-bugs@googlegroups.com, tabba@google.com, xiaoyao.li@intel.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot tried to test the proposed patch but the build/boot failed: failed to apply patch: checking file virt/kvm/guest_memfd.c Hunk #1 FAILED at 708. Hunk #2 succeeded at 648 with fuzz 2 (offset -84 lines). 1 out of 2 hunks FAILED Tested on: commit: 2e590d67 Merge tag 'devicetree-fixes-for-6.18-2' of gi.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=67b63a24f3c26fca dashboard link: https://syzkaller.appspot.com/bug?extid=2479e53d0db9b32ae2aa compiler: patch: https://syzkaller.appspot.com/x/patch.diff?x=15343b04580000