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Date:   Thu, 17 Jun 2021 14:51:49 +0100
From:   Matthew Wilcox <willy@infradead.org>
To:     Naresh Kamboju <naresh.kamboju@linaro.org>
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Subject: Re: [next] [clang] x86_64-linux-gnu-ld: mm/mremap.o: in function
 `move_pgt_entry': mremap.c:(.text+0x763): undefined reference to
 `__compiletime_assert_342'
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On Thu, Jun 17, 2021 at 06:15:45PM +0530, Naresh Kamboju wrote:
> On Thu, 17 Jun 2021 at 17:41, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
> > x86_64-linux-gnu-ld: mm/mremap.o: in function `move_pgt_entry':
> > mremap.c:(.text+0x763): undefined reference to `__compiletime_assert_342'
> 
> The git bisect pointed out the first bad commit.
> 
> The first bad commit:
> commit 928cf6adc7d60c96eca760c05c1000cda061604e
> Author: Stephen Boyd <swboyd@chromium.org>
> Date:   Thu Jun 17 15:21:35 2021 +1000
>     module: add printk formats to add module build ID to stacktraces

Your git bisect probably went astray.  There's no way that commit
caused that regression.