From: Christoph Hellwig <hch@lst.de>
To: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: Christoph Hellwig <hch@lst.de>,
Bruno Gravato <bgravato@gmail.com>, Stefan <linux-kernel@simg.de>,
Keith Busch <kbusch@kernel.org>,
bugzilla-daemon@kernel.org, Adrian Huang <ahuang12@lenovo.com>,
Linux kernel regressions list <regressions@lists.linux.dev>,
linux-nvme@lists.infradead.org, Jens Axboe <axboe@fb.com>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
LKML <linux-kernel@vger.kernel.org>,
Mario Limonciello <mario.limonciello@amd.com>
Subject: Re: [Bug 219609] File corruptions on SSD in 1st M.2 socket of AsRock X600M-STX + Ryzen 8700G
Date: Fri, 17 Jan 2025 10:55:22 +0100 [thread overview]
Message-ID: <20250117095522.GA2391@lst.de> (raw)
In-Reply-To: <f81bb87a-c181-4973-be05-f7df84133a46@leemhuis.info>
On Fri, Jan 17, 2025 at 10:51:09AM +0100, Thorsten Leemhuis wrote:
> By booting with 'ignore_loglevel dyndbg="file drivers/pci/* +p"' I
> suppose? No, that is not printed (but other debug lines from the pci
> code are).
>
> Side note: that "PCI-DMA: Using software bounce buffering for IO
> >> (SWIOTLB)" message does show up on two other AMD machines I own as
> well. One also has a Ryzen 8000, the other one a much older one.
>
> And BTW a few bits of the latest development in the bugzilla ticket
> (https://bugzilla.kernel.org/show_bug.cgi?id=219609 ):
>
> * iommu=pt and amd_iommu=off seems to work around the problem (in
> addition to disabling the iommu in the BIOS setup).
That suggests the problem is related to the dma-iommu code, and
my strong suspect is the swiotlb bounce buffering for untrusted
device. If you feel adventurous, can you try building a kernel
where dev_use_swiotlb() in drivers/iommu/dma-iommu.c is hacked
to always return false?
next prev parent reply other threads:[~2025-01-17 9:55 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-08 14:38 [Regression] File corruptions on SSD in 1st M.2 socket of AsRock X600M-STX Thorsten Leemhuis
2025-01-08 15:07 ` Keith Busch
2025-01-09 8:28 ` Christoph Hellwig
2025-01-09 8:52 ` Thorsten Leemhuis
2025-01-09 15:44 ` [Bug 219609] File corruptions on SSD in 1st M.2 socket of AsRock X600M-STX + Ryzen 8700G Stefan
2025-01-10 11:17 ` Bruno Gravato
2025-01-15 6:37 ` Bruno Gravato
2025-01-15 8:40 ` Thorsten Leemhuis
2025-01-16 17:29 ` Thorsten Leemhuis
2025-01-17 8:05 ` Christoph Hellwig
2025-01-17 9:51 ` Thorsten Leemhuis
2025-01-17 9:55 ` Christoph Hellwig [this message]
2025-01-17 10:30 ` Thorsten Leemhuis
2025-02-04 6:26 ` Christoph Hellwig
2025-01-17 13:36 ` Bruno Gravato
2025-01-20 14:31 ` Thorsten Leemhuis
2025-01-28 7:41 ` Christoph Hellwig
2025-01-28 12:00 ` Stefan
2025-01-28 12:52 ` Dr. David Alan Gilbert
2025-01-28 14:24 ` Stefan
2025-02-02 8:32 ` Bruno Gravato
2025-02-04 6:12 ` Christoph Hellwig
2025-02-04 9:12 ` Bruno Gravato
2025-02-03 18:48 ` Stefan
2025-02-06 15:58 ` Stefan
2025-01-17 21:31 ` Stefan
2025-01-18 1:03 ` Keith Busch
2025-01-15 10:47 ` Stefan
2025-01-15 13:14 ` Bruno Gravato
2025-01-15 16:26 ` Stefan
2025-01-10 0:10 ` [Regression] File corruptions on SSD in 1st M.2 socket of AsRock X600M-STX Keith Busch
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