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From: Liam Howlett <liam.howlett@oracle.com>
To: Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: open list <linux-kernel@vger.kernel.org>,
	Linux-Next Mailing List <linux-next@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	Andrew Morton <akpm@linux-foundation.org>,
	Matthew Wilcox <willy@infradead.org>,
	David Howells <dhowells@redhat.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	SeongJae Park <sj@kernel.org>, Vlastimil Babka <vbabka@suse.cz>,
	Will Deacon <will@kernel.org>,
	Davidlohr Bueso <dave@stgolabs.net>
Subject: Re: BUG: kernel NULL pointer dereference, address: 00000004 - mas_update_gap
Date: Tue, 17 May 2022 15:27:08 +0000	[thread overview]
Message-ID: <20220517152702.rttuqbgx7f4idhd7@revolver> (raw)
In-Reply-To: <CA+G9fYuOHwkkqTdcqGa7kazBwCOF-P0Kw0gthvAzjU0t5EVSAQ@mail.gmail.com>

* Naresh Kamboju <naresh.kamboju@linaro.org> [220516 02:35]:
> While running LTP sched tests on i386 the following kernel BUG noticed on
> Linux next-20220513 [1].
> 
...

> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> 
> metadata:
>   git_ref: master
>   git_repo: ''
>   git_sha: 1e1b28b936aed946122b4e0991e7144fdbbfd77e
>   git_describe: next-20220513
>   kernel_version: 5.18.0-rc6
>   kernel-config: https://builds.tuxbuild.com/296PiI1oM7N6Vk7m9lxuipmXW7B/config
>   build-url: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next/-/pipelines/538244935
>   artifact-location: https://builds.tuxbuild.com/296PiI1oM7N6Vk7m9lxuipmXW7B
>   toolchain: gcc-11
> 
> --
> Linaro LKFT
> https://lkft.linaro.org
> 
> [1] https://lkft.validation.linaro.org/scheduler/job/5021335#L1718


I was able to reproduce this issue with ltp running:
"./runltp -p -q -f sched"

I have sent a fix out [1] that allows the test to execute on i386 qemu.

Thanks,
Liam

1. https://lore.kernel.org/linux-mm/20220517152209.3486724-1-Liam.Howlett@oracle.com/


      reply	other threads:[~2022-05-17 15:27 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-16  6:34 Naresh Kamboju
2022-05-17 15:27 ` Liam Howlett [this message]

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