From: Catalin Marinas <catalin.marinas@arm.com>
To: Dan Carpenter <dan.carpenter@linaro.org>
Cc: Yang Shi <yang@os.amperecomputing.com>,
Naresh Kamboju <naresh.kamboju@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, patches@lists.linux.dev,
linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
akpm@linux-foundation.org, linux@roeck-us.net, shuah@kernel.org,
patches@kernelci.org, lkft-triage@lists.linaro.org,
pavel@denx.de, jonathanh@nvidia.com, f.fainelli@gmail.com,
sudipm.mukherjee@gmail.com, srw@sladewatkins.net, rwarsow@gmx.de,
conor@kernel.org, hargar@microsoft.com, broonie@kernel.org,
Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
linux-fsdevel@vger.kernel.org, linux-mm <linux-mm@kvack.org>,
Anders Roxell <anders.roxell@linaro.org>,
Arnd Bergmann <arnd@arndb.de>,
Herbert Xu <herbert@gondor.apana.org.au>,
willy@infradead.org, Pankaj Raghav <p.raghav@samsung.com>,
David Hildenbrand <david@redhat.com>
Subject: Re: [PATCH 6.6 000/389] 6.6.76-rc2 review
Date: Wed, 19 Feb 2025 15:52:54 +0000 [thread overview]
Message-ID: <Z7X-VrwJrLSBN-XZ@arm.com> (raw)
In-Reply-To: <b44dc8f6-7abf-4168-b96d-54f1562008e6@stanley.mountain>
Hi Dan,
On Wed, Feb 19, 2025 at 06:43:52PM +0300, Dan Carpenter wrote:
> What's happening is that we backport the latest kselftests and run
> them on the old kernels. This is a supported thing so kselftests
> are supposed to be able to handle that.
Yes, I do this occasionally as well (a single rootfs with the kselftests
that I use with different kernels).
> So we need to modify the testing/selftests/arm64/mte/check_hugetlb_options.c
> to check if the feature is present and disable the test for older
> kernels.
I'm not worried about the test failing yet, we can solve it later, but
rather the WARN_ON_ONCE() in the arm64 copy_highpage(). We should not
trigger this condition since hugetlb vmas don't have VM_MTE_ALLOWED set,
so PROT_MTE mappings should be refused and the test shouldn't get any
mapping.
I tried vanilla 6.6 and it trips over as well, so something wrong in how
we handle MTE hugetlb pages. I'm looking into it.
--
Catalin
next prev parent reply other threads:[~2025-02-19 15:53 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20250206155234.095034647@linuxfoundation.org>
2025-02-08 11:24 ` [PATCH 6.6 000/389] 6.6.76-rc2 review Naresh Kamboju
2025-02-17 11:30 ` Naresh Kamboju
2025-02-17 11:37 ` Greg Kroah-Hartman
2025-02-19 11:46 ` Naresh Kamboju
2025-02-19 12:13 ` Greg Kroah-Hartman
2025-02-19 14:00 ` Catalin Marinas
2025-02-19 15:43 ` Dan Carpenter
2025-02-19 15:52 ` Dan Carpenter
2025-02-19 15:52 ` Catalin Marinas [this message]
2025-02-19 17:18 ` Catalin Marinas
2025-02-19 18:09 ` Greg Kroah-Hartman
2025-02-19 19:16 ` Catalin Marinas
2025-02-19 18:31 ` Yang Shi
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