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From:   Naresh Kamboju <naresh.kamboju@linaro.org>
Date:   Thu, 5 Oct 2023 20:25:02 +0530
Message-ID: <CA+G9fYvHPnba-0=uGS70EjcPgHht13j3s-_fmd2=srL0xyPjNg@mail.gmail.com>
Subject: Re: [PATCH 6.5 000/321] 6.5.6-rc1 review
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Alexei Starovoitov <ast@kernel.org>,
        Hou Tao <houtao1@huawei.com>
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, bpf <bpf@vger.kernel.org>,
        Anders Roxell <anders.roxell@linaro.org>,
        =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= <bjorn@kernel.org>
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On Thu, 5 Oct 2023 at 11:05, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>
> On Wed, 4 Oct 2023 at 23:53, Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> >
> > This is the start of the stable review cycle for the 6.5.6 release.
> > There are 321 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 Fri, 06 Oct 2023 17:51:12 +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-6.5.6-rc1.gz
> > or in the git tree and branch at:
> >         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.5.y
> > and the diffstat can be found below.
> >
> > thanks,
> >
> > greg k-h
>
> The following kernel warning was noticed on qemu-armv7 while booting
> with kselftest merge configs enabled build on stable-rc 6.5.6-rc1.
>
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
>
> > Hou Tao <houtao1@huawei.com>
> >     bpf: Ensure unit_size is matched with slab cache object size
>
>
> bpf: Ensure unit_size is matched with slab cache object size
> [ Upstream commit c930472552022bd09aab3cd946ba3f243070d5c7 ]
>
> [    2.525383] ------------[ cut here ]------------
> [    2.525743] WARNING: CPU: 0 PID: 1 at kernel/bpf/memalloc.c:385
> bpf_mem_alloc_init+0x3b0/0x3b4
> [    2.527241] bpf_mem_cache[0]: unexpected object size 128, expect 96


Anders investigated this report and picked up the following patches to
solve the reported problem.

d52b59315bf5e bpf: Adjust size_index according to the value of KMALLOC_MIN_SIZE
b1d53958b6931 bpf: Don't prefill for unused bpf_mem_cache
c930472552022 bpf: Ensure unit_size is matched with slab cache object size

- Naresh