From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DCA9525F995; Wed, 26 Nov 2025 06:15:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764137717; cv=none; b=G0WHt5btEyx86hTerFotBnprK4OWpYFMCEJw8a34yqsMXsfb9TMjgPcL/nEYfDstAj0org9qeDVb2Fh/FIsaa+iiElsecwmfgu/ZUlksua+8XLPasAm8oKrXgRins/kQdR4ZO2am1QNoaBl9b62tuxtUMHQRyMcOvePRtdzU1T4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764137717; c=relaxed/simple; bh=bdrLy/roSIjZ9hNJOVMpdv6owYEML9awCGFhifYXlJY=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=KBI04WAhB114DwykO2QYQkVQKi69W1xnAaln9ocL6sqnR5cXk0gXZaMbw1S9h2Eb3xqspWZvgxegnMr06DC5NfmuHnHD3Dpn242n47/INDFmepKgKHda18G5ZOm9/g4QzuJyK4nn7Q+4w7MkHlXfa3CSj71WP5rZd+78nM0LM2Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=EEjcqSNw; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="EEjcqSNw" Received: from [10.95.66.235] (unknown [167.220.238.139]) by linux.microsoft.com (Postfix) with ESMTPSA id A95212120EAD; Tue, 25 Nov 2025 22:15:07 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com A95212120EAD DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1764137711; bh=Bc4hdbhO9YOVvNp4UyeZiT+DiaSSmhbUeWedsGko6NU=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=EEjcqSNwBdZmCZCHYQAJypX7uA5A89diI6v3IuVYWMDVxu8hmKBC0cL3v0TiQfGaN 3JI8F7jnNGfpDM6vzdSmN9U5gYZEizZ4sjFvHMF69BS8xJE6bOusdP/XHSrq80maLA nmM0fVEHgnx06GxDN9dqhQkWXgi+BIhjknHWCcPY= Message-ID: Date: Wed, 26 Nov 2025 11:45:05 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Bug#1120602: [REGRESSION 6.12.y] hyper-v: BUG: kernel NULL pointer dereference, address: 00000000000000a0: RIP: 0010:hv_uio_channel_cb+0xd/0x20 [uio_hv_generic] To: Peter Morrow Cc: Salvatore Bonaccorso , 1120602@bugs.debian.org, Long Li , linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, regressions@lists.linux.dev, stable@vger.kernel.org, John Starks , Michael Kelley , Tianyu Lan , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Greg Kroah-Hartman References: <7a38c04d-4e54-4f1a-96fd-43f0f11ab97b@linux.microsoft.com> <176298819854.487825.11724175116974643582.reportbug@p15v.lan> <18bcf829-04f9-46ec-a874-7c2b9338cf3d@linux.microsoft.com> <25aff5ca-b5e1-4907-bd12-6571f8454146@linux.microsoft.com> Content-Language: en-US From: Naman Jain In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 11/21/2025 3:34 PM, Peter Morrow wrote: > Hi Naman/Salvatore, > > Is it possible to get this fixed in the 6.1 LTS series too? I just ran > into this crash when moving from bookworm based Debian kernel > 6.1.153-1 to 6.1.158-1. I saw that "uio_hv_generic: Let userspace take > care of interrupt mask" appeared in 6.1.156. > > Thanks, > Peter. > Hi Peter, Yes, I have sent a patch for older kernel versions as well. I am working to fix the review comments and send new revisions. Here is the link: https://lore.kernel.org/all/20251115085937.2237-1-namjain@linux.microsoft.com/ Regards, Naman