linux-kernel - Re: [bpf-next] selftests/bpf fails to compile

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Message-ID: <7e47814f-37de-417d-a84b-de21147e372f@linux.ibm.com>
Date: Tue, 11 Mar 2025 19:42:16 +0530
From: Venkat Rao Bagalkote <venkat88@...ux.ibm.com>
To: Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc: bpf <bpf@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Hari Bathini <hbathini@...ux.ibm.com>,
        Saket Kumar Bhaskar <skb99@...ux.ibm.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Kumar Kartikeya Dwivedi <memxor@...il.com>
Subject: Re: [bpf-next] selftests/bpf fails to compile


On 10/03/25 2:15 pm, Alexei Starovoitov wrote:
> On Mon, Mar 10, 2025 at 8:32 AM Venkat Rao Bagalkote
> <venkat88@...ux.ibm.com> wrote:
>> Greetings!!!
>>
>> selftests/bpf fails to compile with below error on bpf-next repo with
>> commit head: f28214603dc6c09b3b5e67b1ebd5ca83ad943ce3
>>
>> Repo link:
>> https://web.git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/
>>
>> Reverting below commit resolves the issue.
>>
>> Commit ID: 48b3be8d7f82bea6affe6b9f11ee67380b55ede8
> ...
>
>> If you happen to fix the issue, please add below tag.
>>
>> Reported-by: Venkat Rao Bagalkote <venkat88@...ux.ibm.com>
> Not quite. The issue is likely that your llvm is too old.
> Please upgrade.


Thanks for the feedback.

I did try the compilation on fedora41, with linux-mainline kernel and 
/sefltests/bpf compiled successfully. But on the same set-up 
/selftests/bpf failed to compile on bpf-next kernel.


OS: Fedora Linux 41 (Server Edition)
LLVM: llvm-19.1.7-3.fc41.ppc64le

gcc version 14.2.1 20250110 (Red Hat 14.2.1-7) (GCC)

Passing repo: 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Failing repo: 
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/

Regards,

Venkat.

>