linux-kernel - Re: [PATCH 5.4 000/367] 5.4.257-rc1 review

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Date:   Thu, 21 Sep 2023 05:20:17 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Florian Fainelli <f.fainelli@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org
Cc:     patches@...ts.linux.dev, linux-kernel@...r.kernel.org,
        torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
        shuah@...nel.org, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, pavel@...x.de, jonathanh@...dia.com,
        sudipm.mukherjee@...il.com, srw@...dewatkins.net, rwarsow@....de,
        conor@...nel.org
Subject: Re: [PATCH 5.4 000/367] 5.4.257-rc1 review

On 9/20/23 10:21, Florian Fainelli wrote:
> On 9/20/23 04:26, Greg Kroah-Hartman wrote:
>> This is the start of the stable review cycle for the 5.4.257 release.
>> There are 367 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, 22 Sep 2023 11:28:09 +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/v5.x/stable-review/patch-5.4.257-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-5.4.y
>> and the diffstat can be found below.
>>
>> thanks,
>>
>> greg k-h
> 
> perf does not build with:
> 
> libbpf.c: In function 'bpf_object__close':
> libbpf.c:4205:15: error: 'struct bpf_object' has no member named 'btf_vmlinux'
>    btf__free(obj->btf_vmlinux);
>                 ^~
> 
> due to 34d66b750e83d49c7d3d33d59e6a1b49e0d5db15 ("libbpf: Free btf_vmlinux when closing bpf_object")
> 
> the btf_vmlinux member was introduced with a6ed02cac690b635dbb938690e795812ce1e14ca ("libbpf: Load btf_vmlinux only once per object.") which is only in >= 5.6.
> 
> Suggset we drop that commit.


This problem affects 5.4, 5.10, and 5.15.

Guenter