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Date:   Sat, 14 Oct 2023 12:38:30 -0400
From:   Sasha Levin <sashal@kernel.org>
To:     Younes Manton <younes.m@gmail.com>
Cc:     stable@vger.kernel.org
Subject: Re: Request backport of "perf inject: Fix GEN_ELF_TEXT_OFFSET for
 jit"
Message-ID: <ZSrEBsL38S6rXTkX@sashalap>
References: <CAMVNhxS-6qNfxy8jHrY5EtZASTL9gAvZi=BdTkUA5_5CSQ2Cmg@mail.gmail.com>
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On Fri, Oct 13, 2023 at 07:22:02PM -0400, Younes Manton wrote:
>The following commit:
>
>[babd04386b1df8c364cdaa39ac0e54349502e1e5] perf jit: Include program
>header in ELF files
>
>introduced a bug in perf that causes samples to be attributed to the
>wrong instructions in the annotated assembly output of `perf report`
>and `perf annotate`.
>
>The following commit:
>
>[89b15d00527b7825ff19130ed83478e80e3fae99] perf inject: Fix
>GEN_ELF_TEXT_OFFSET for jit
>
>fixes the bug.
>
>Buggy commit is present in 4.19, 5.4, 5.10, and 5.15. The fix is in
>6.1, 6.4, and 6.5. Can it also be backported to at least the 5.x
>kernels, if not 4.19?
>
>The output looks very confusing when parts of the code one expects to
>accumulate ticks don't and other parts that shouldn't be executed at
>all accumulate ticks.
>
>I opened https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2020197
>and was directed here, hopefully I understood the request correctly.
>Thank you.

Queued up, thanks.

-- 
Thanks,
Sasha