linux-kernel - Re: [mainline]Warning while building tools/perf

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Message-ID: <43507075-ec04-44c8-a95f-49e074d933d8@linux.ibm.com>
Date: Fri, 25 Apr 2025 21:37:32 +0530
From: Venkat Rao Bagalkote <venkat88@...ux.ibm.com>
To: Namhyung Kim <namhyung@...nel.org>, James Clark <james.clark@...aro.org>,
        Athira Rajeev <atrajeev@...ux.ibm.com>, Ingo Molnar <mingo@...nel.org>,
        "open list:PERFORMANCE EVENTS SUBSYSTEM" <linux-perf-users@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, sgarzare@...hat.com,
        mst@...hat.com
Subject: Re: [mainline]Warning while building tools/perf


My bad, missed to mention the warning in the previous mail.

On 25/04/25 9:32 pm, Venkat Rao Bagalkote wrote:
> Hello,
>
>
> I am seeing a new build warning while building tools/perf on the 
> mainline kernel, with base:
>
> commit 02ddfb981de88a2c15621115dd7be2431252c568 (HEAD -> master, 
> origin/master, origin/HEAD)
> Merge: 30e268185e59 b0b7ee3b574a
> Author: Linus Torvalds <torvalds@...ux-foundation.org>
> Date:   Thu Apr 24 13:01:31 2025 -0700
>
>     Merge tag 'scsi-fixes' of 
> git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
>
>     Pull SCSI fixes from James Bottomley:
>      "The single core change is an obvious bug fix (and falls within 
> the LF
>       guidelines for patches from sanctioned entities). The other driver
>       changes are a bit larger but likewise pretty obvious"
>
>     * tag 'scsi-fixes' of 
> git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
>       scsi: mpi3mr: Add level check to control event logging
>       scsi: ufs: core: Add NULL check in 
> ufshcd_mcq_compl_pending_transfer()
>       scsi: core: Clear flags for scsi_cmnd that did not complete
>       scsi: ufs: Introduce quirk to extend PA_HIBERN8TIME for UFS devices
>       scsi: ufs: qcom: Add quirks for Samsung UFS devices
>       scsi: target: iscsi: Fix timeout on deleted connection
>       scsi: mpi3mr: Reset the pending interrupt flag
>       scsi: mpi3mr: Fix pending I/O counter
>       scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort()
>

Warning:

diff -u tools/perf/trace/beauty/include/uapi/linux/vhost.h 
include/uapi/linux/vhost.h

>
> Git Bisect is pointing to below commit as first bad commit.
>
>
> a940e0a685575424d33324ec7f0089045249de0a is the first bad commit
> commit a940e0a685575424d33324ec7f0089045249de0a
> Author: Stefano Garzarella <sgarzare@...hat.com>
> Date:   Mon Mar 3 09:52:37 2025 +0100
>
>     vhost: fix VHOST_*_OWNER documentation
>
>     VHOST_OWNER_SET and VHOST_OWNER_RESET are used in the documentation
>     instead of VHOST_SET_OWNER and VHOST_RESET_OWNER respectively.
>
>     To avoid confusion, let's use the right names in the documentation.
>     No change to the API, only the documentation is involved.
>
>     Signed-off-by: Stefano Garzarella <sgarzare@...hat.com>
>     Message-Id: <20250303085237.19990-1-sgarzare@...hat.com>
>     Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
>
>  include/uapi/linux/vhost.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
>
> Upon reverting the above commit, warning is not seen.
>
>
> Bisect log:
>
>
> git bisect start
> # status: waiting for both good and bad commits
> # good: [9c32cda43eb78f78c73aee4aa344b777714e259b] Linux 6.15-rc3
> git bisect good 9c32cda43eb78f78c73aee4aa344b777714e259b
> # status: waiting for bad commit, 1 good commit known
> # bad: [02ddfb981de88a2c15621115dd7be2431252c568] Merge tag 
> 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
> git bisect bad 02ddfb981de88a2c15621115dd7be2431252c568
> # good: [cc0dec3f659d19805fcaf8822204137c9f27a912] Merge branch 
> 'net-stmmac-fix-timestamp-snapshots-on-dwmac1000'
> git bisect good cc0dec3f659d19805fcaf8822204137c9f27a912
> # bad: [0251ddbffbeb213f0f74ef94b2cacce580eb8d76] Merge tag 
> 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
> git bisect bad 0251ddbffbeb213f0f74ef94b2cacce580eb8d76
> # good: [bc3372351d0c8b2726b7d4229b878342e3e6b0e8] Merge tag 
> 'for-6.15-rc3-tag' of 
> git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
> git bisect good bc3372351d0c8b2726b7d4229b878342e3e6b0e8
> # bad: [fbd3039a64b01b769040677c4fc68badeca8e3b2] virtio_console: fix 
> missing byte order handling for cols and rows
> git bisect bad fbd3039a64b01b769040677c4fc68badeca8e3b2
> # bad: [a940e0a685575424d33324ec7f0089045249de0a] vhost: fix 
> VHOST_*_OWNER documentation
> git bisect bad a940e0a685575424d33324ec7f0089045249de0a
> # good: [16c22c56d4282584742022a37d4f79a46ca6094a] virtio_pci: Use 
> self group type for cap commands
> git bisect good 16c22c56d4282584742022a37d4f79a46ca6094a
> # first bad commit: [a940e0a685575424d33324ec7f0089045249de0a] vhost: 
> fix VHOST_*_OWNER documentation
>
>
> If you happen to fix this, please add below tag.
>
>
> Reported-by: Venkat Rao Bagalkote <venkat88@...ux.ibm.com>
>
>
> Regards,
>
> Venkat.
>