linux-kernel - Re: [mainline]tools/perf build warnings

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Message-ID: <1ec497ed-b98c-46aa-a9c2-5fa906790298@linux.ibm.com>
Date: Wed, 16 Apr 2025 19:33:41 +0530
From: Venkat Rao Bagalkote <venkat88@...ux.ibm.com>
To: Athira Rajeev <atrajeev@...ux.ibm.com>
Cc: Madhavan Srinivasan <maddy@...ux.ibm.com>,
        Namhyung Kim <namhyung@...nel.org>, Ingo Molnar <mingo@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, jiang.peng9@....com.cn,
        shao.mingyin@....com.cn, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [mainline]tools/perf build warnings


On 16/04/25 6:41 pm, Athira Rajeev wrote:
>
>> On 16 Apr 2025, at 5:12 PM, Venkat Rao Bagalkote <venkat88@...ux.ibm.com> wrote:
>>
>> Hello,
>>
>>
>> I am observing a new build warning on today mainline kernel, with head commit: g834a4a689699
>>
>> Repo:https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>>
>>
>> Warnings:
>>
>> diff -u tools/include/vdso/unaligned.h include/vdso/unaligned.h
>>
>>
>> If you happen to fix this, please add below tag.
>>
>>
>> Reported-by: Venkat Rao Bagalkote <venkat88@...ux.ibm.com>
> Hi Venkat
>
> Can you please check with https://web.git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git/?h=tmp.perf-tools-next
> with the tmp.perf-tools-next branch..


I verified with perf-tools-next repo on both branches namely 
tmp.perf-tools-next and perf-tools-next, and I think this warning got 
recently introduced.

Git Bisect is pointing to acea9943271b62905033f2f8ca571cdd52d6ea7b as 
first bad commit.


Below is the bisect log:

git bisect log
git bisect start
# status: waiting for both good and bad commits
# bad: [834a4a689699090a406d1662b03affa8b155d025] Merge tag 'for-linus' 
of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
git bisect bad 834a4a689699090a406d1662b03affa8b155d025
# status: waiting for good commit(s), bad commit known
# good: [0af2f6be1b4281385b618cb86ad946eded089ac8] Linux 6.15-rc1
git bisect good 0af2f6be1b4281385b618cb86ad946eded089ac8
# bad: [ef7785882672e73847fb80f6c39e76998d4db57b] Merge tag 
'bcachefs-2025-04-10' of git://evilpiepirate.org/bcachefs
git bisect bad ef7785882672e73847fb80f6c39e76998d4db57b
# good: [e4742a89cfaced383db758bef94037637899487a] Merge tag 
'block-6.15-20250410' of git://git.kernel.dk/linux
git bisect good e4742a89cfaced383db758bef94037637899487a
# good: [eaa517b77e63442260640d875f824d1111ca6569] ethtool: cmis_cdb: 
Fix incorrect read / write length extension
git bisect good eaa517b77e63442260640d875f824d1111ca6569
# good: [ac253a537da3b210fa4b65d522d5533fc68f9515] Merge tag 
'perf-urgent-2025-04-10' of 
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good ac253a537da3b210fa4b65d522d5533fc68f9515
# good: [3c9de67dd37029cca1d0f391ff565b3809b40a1f] Merge tag 
'x86-urgent-2025-04-10' of 
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 3c9de67dd37029cca1d0f391ff565b3809b40a1f
# bad: [0c7cae12f67c4c5fd232cffb27023deb409e1e20] Merge tag 
'irq-urgent-2025-04-10' of 
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 0c7cae12f67c4c5fd232cffb27023deb409e1e20
# bad: [34833819d2270ef96fa98fe3c1d3d297b5dec986] Merge tag 
'timers-urgent-2025-04-10' of 
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 34833819d2270ef96fa98fe3c1d3d297b5dec986
# good: [92e250c624ea37fde64bfd624fd2556f0d846f18] timekeeping: Add a 
lockdep override in tick_freeze()
git bisect good 92e250c624ea37fde64bfd624fd2556f0d846f18
# bad: [acea9943271b62905033f2f8ca571cdd52d6ea7b] vdso: Address variable 
shadowing in macros
git bisect bad acea9943271b62905033f2f8ca571cdd52d6ea7b
# first bad commit: [acea9943271b62905033f2f8ca571cdd52d6ea7b] vdso: 
Address variable shadowing in macros


Regards,

Venkat.

>
> Also there is a patchset here:
> https://lore.kernel.org/linux-perf-users/FE96FD04-4396-4C34-A70D-2A592FD5F916@linux.ibm.com/T/#m3e9d6aac4c34ebf42f18f3c213b7dff8f8c70d9d
>
> Which I think you have already tested..
>
> Thanks
> Athira
>>
>> Regards,
>>
>> Venkat.
>>
>>
>>