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 1C0662E2F13 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-430c8321bc1so34239085ab.0 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=JL/8wOy4uFdqlFaXEmheyTSrBEzXBssFdOzB+8QewusT1lBY+cZn2INge9tsCKY5st gaqfxMspWbEPfv/ddBmHNuhJiJkJWgUieXlPzmHk0OsgQGSyBomIhGakRA3BlkeIqXE8 9XJSutiEkWaW6308ubsmai/psJpzgFrQMt+CJi7Cs/xYhb3AeDCSaqoOUg57ms8ICGfy D2HglVe/em+4Qz9xmrcrpd7UHqA1QJe/GS+7A8hl7CguRUllcxjdV6KOUY2SPXUu3xsm UC1OsBYV+IaqovhdI4lVGDNw5wIyqKUx2ujTvHhpuR7ymeTQH7SpDf8F6QIhUVL8SlPb 6HqA== X-Forwarded-Encrypted: i=1; AJvYcCVLSZ+5oFHyI4MLFJcYmc8WKZkdzK2h2ramAP+VKi6kG9pQGcPdSxTb/tDTTPp8HZnpTma30Cy/lPUVt+M=@vger.kernel.org X-Gm-Message-State: AOJu0YyVUZgOvFv77CBTeaJPUqTIPMtrTTsjitlGCzJ8/K/lGdQn9vg2 yl140B6P1rifOXXnljCLF2gPd3gzTfC/Nv0o1glQU5be9NvUd2OIgRUWufvkmxSDrDDMYP3pXsW U5gb9zS4v3/nAHrzXRfS8WAr9VK31TVKmztwGGxScrdvVjrAq8va9F4Xv/ks= X-Google-Smtp-Source: AGHT+IGlUpe7cydcYsCSWlW6XihJFInJ5PrrM/WDK2B5vlav5c+q5ILM6EBm0u8n69E78Yxpsybu0+hW5MT50ZjVBupDnAav8Nfe Precedence: bulk X-Mailing-List: linux-kernel@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