linux-kernel - Re: iwlwifi: Regression after migrating to 6.6.32

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Thu, 13 Jun 2024 15:10:35 +0800
From: Baochen Qiang <quic_bqiang@...cinc.com>
To: Fabio Estevam <festevam@...il.com>,
        Johannes Berg
	<johannes@...solutions.net>
CC: <miriam.rachel.korenblit@...el.com>, <kvalo@...nel.org>,
        Jakub Kicinski
	<kuba@...nel.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: iwlwifi: Regression after migrating to 6.6.32



On 6/13/2024 3:15 AM, Fabio Estevam wrote:
> Hi Johannes,
> 
> On Wed, Jun 12, 2024 at 4:10 PM Johannes Berg <johannes@...solutions.net> wrote:
> 
>> Strange. Is there an IOMMU involved on this platform?
> 
> IOMMU isn't available on i.MX8M as far as I know.
If IOMMU not present, likely the buffer is mapped by SWIOTLB. The iova 4215433216, aka 0xFB426800, is 2K aligned, which also supports such guessing. See definition of IO_TLB_SIZE.

> 
> Interestingly, such a warning does not happen with the 5.10 kernel.
> 
> I only noticed it yesterday, after migrating to 6.6.32.
> 
> Thanks
>