From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To: Christoph Hellwig <hch@lst.de>, Frank Scheiner <frank.scheiner@web.de>
Cc: Jan Engelhardt <jengelh@inai.de>,
Sparc kernel list <sparclinux@vger.kernel.org>,
debian-sparc <debian-sparc@lists.debian.org>
Subject: Re: Regression in 028abd92 for Sun UltraSPARC T1
Date: Tue, 02 Sep 2025 22:18:07 +0200 [thread overview]
Message-ID: <e705404a9f66e0cffc0c474b565b2755d8d560c2.camel@physik.fu-berlin.de> (raw)
In-Reply-To: <20210325075036.GA27022@lst.de>
Hi Christoph,
On Thu, 2021-03-25 at 08:50 +0100, Christoph Hellwig wrote:
> I have to admit I'm completely lost at this point. This new trace looks
> totally strange to me, and I'm pretty sure whatever symptoms you see are
> due to different alignments / code sections etc just triggered by the
> removal, we need help from the real sparc experts.
This has finally been tracked down to a regression in the copy_{to,from}_user
code on SPARC as it's found in arch/sparc/lib. Patches to fix these issues
have already been posted in [1].
I'm waiting for Frank to test the patches on his SPARC T1 which is the only
SPARC sub-arch we don't have test results for yet.
Adrian
> [1] https://lore.kernel.org/all/20250826160312.2070-1-kernel@mkarcher.dialup.fu-berlin.de/
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer
`. `' Physicist
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
prev parent reply other threads:[~2025-09-02 20:18 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 21:30 Regression in 028abd92 for Sun UltraSPARC T1 Frank Scheiner
2021-03-22 21:48 ` John Paul Adrian Glaubitz
2021-03-22 21:55 ` Frank Scheiner
2021-03-23 16:50 ` Jan Engelhardt
2021-03-23 16:57 ` Christoph Hellwig
2021-03-23 17:39 ` Frank Scheiner
2021-03-23 22:17 ` Frank Scheiner
2021-03-24 8:28 ` Christoph Hellwig
2021-03-24 12:30 ` Frank Scheiner
2021-03-24 12:42 ` Anatoly Pugachev
2021-03-24 12:48 ` Frank Scheiner
2021-03-24 12:49 ` John Paul Adrian Glaubitz
2021-03-24 13:09 ` Frank Scheiner
2021-03-24 13:16 ` John Paul Adrian Glaubitz
2021-03-24 13:19 ` Frank Scheiner
2021-03-24 13:24 ` Anatoly Pugachev
2021-03-24 13:29 ` Frank Scheiner
2021-03-24 13:57 ` Frank Scheiner
2021-03-24 15:22 ` Jan Engelhardt
2021-03-24 15:58 ` Frank Scheiner
2021-03-24 16:10 ` Christoph Hellwig
2021-03-24 16:33 ` Frank Scheiner
2021-03-24 16:37 ` Frank Scheiner
2021-03-25 7:50 ` Christoph Hellwig
2025-09-02 20:18 ` John Paul Adrian Glaubitz [this message]
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