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h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=sdwpvn88YqYn+PFnG/VmA6j5cmCZfbkJa0i5Cs+LZQt5dXQSGcZTxEL/0KeLMYYl/ UFxkcA4dBqGez51nO+VC+/fspD6+etar/FDZKN0IvjV/7KupJYA+oWu2Cbd7JK6JBs TDEWnQPHp2pGaXO3fkphVMRt0Bpql3vyOC8gjEig= Date: Wed, 19 Feb 2025 13:13:32 +0100 From: Greg Kroah-Hartman To: Naresh Kamboju Cc: 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-fsdevel@vger.kernel.org, linux-mm , Anders Roxell , Dan Carpenter , Arnd Bergmann , Herbert Xu , willy@infradead.org, Pankaj Raghav , Yang Shi , Catalin Marinas , David Hildenbrand Subject: Re: [PATCH 6.6 000/389] 6.6.76-rc2 review Message-ID: <2025021901-silenced-phonebook-9b81@gregkh> References: <20250206155234.095034647@linuxfoundation.org> <2025021739-jackpot-lip-09f9@gregkh> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Queue-Id: 566464000A X-Stat-Signature: tn4fwhpmymntfabmskf769po4rung4pf X-Rspamd-Server: rspam03 X-HE-Tag: 1739967216-510960 X-HE-Meta: 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 EkPY3oiA 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Feb 19, 2025 at 05:16:19PM +0530, Naresh Kamboju wrote: > On Mon, 17 Feb 2025 at 17:07, Greg Kroah-Hartman > wrote: > > > > On Mon, Feb 17, 2025 at 05:00:43PM +0530, Naresh Kamboju wrote: > > > On Sat, 8 Feb 2025 at 16:54, Naresh Kamboju wrote: > > > > > > > > On Thu, 6 Feb 2025 at 21:36, Greg Kroah-Hartman > > > > wrote: > > > > > > > > > > This is the start of the stable review cycle for the 6.6.76 release. > > > > > There are 389 patches in this series, all will be posted as a response > > > > > to this one. If anyone has any issues with these being applied, please > > > > > let me know. > > > > > > > > > > Responses should be made by Sat, 08 Feb 2025 15:51:12 +0000. > > > > > Anything received after that time might be too late. > > > > > > > > > > The whole patch series can be found in one patch at: > > > > > https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.6.76-rc2.gz > > > > > or in the git tree and branch at: > > > > > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.6.y > > > > > and the diffstat can be found below. > > > > > > > > > > thanks, > > > > > > > > > > greg k-h > > > > > > > > > > > > There are three different regressions found and reporting here, > > > > We are working on bisecting and investigating these issues, > > > > > > We observed a kernel warning on QEMU-ARM64 and FVP while running the > > > newly added selftest: arm64: check_hugetlb_options. This issue appears > > > on 6.6.76 onward and 6.12.13 onward, as reported in the stable review [1]. > > > However, the test case passes successfully on stable 6.13. > > > > > > The selftests: arm64: check_hugetlb_options test was introduced following > > > the recent upgrade of kselftest test sources to the stable 6.13 branch. > > > As you are aware, LKFT runs the latest kselftest sources (from stable > > > 6.13.x) on 6.12.x, 6.6.x, and older kernels for validation purposes. > > > > > > >From Anders' bisection results, we identified that the missing patch on > > > 6.12 is likely causing this regression: > > > > > > First fixed commit: > > > [25c17c4b55def92a01e3eecc9c775a6ee25ca20f] > > > hugetlb: arm64: add MTE support > > > > > > Could you confirm whether this patch is eligible for backporting to > > > 6.12 and 6.6 kernels? > > > If backporting is not an option, we will need to skip running this > > > test case on older kernels. > > > > The test case itself should properly "skip" if the feature is not > > present in the kernel. Why not fix that up instead? > > The reported test gets PASS at the end, but generates kernel warning > while running the test case (always reproducible) on 6.12 and 6.6. > > The reported warning was not seen on stable 6.13. So this implies that userspace can cause a kernel warning? That means it can cause a DoS, that's not good at all. So the commit you mention actually fixes a bug then? Otherwise this feels really odd, as that means that any kernel without that change can crash this way. What changed to cause this to happen? thanks, greg k-h