linux-kernel - Re: FAILED: load BTF from vmlinux: No such file or directory

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Message-ID: <Y2Lig+5ak3zKuPa1@sirena.org.uk>
Date:   Wed, 2 Nov 2022 21:34:59 +0000
From:   Mark Brown <broonie@...nel.org>
To:     kernel test robot <lkp@...el.com>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: FAILED: load BTF from vmlinux: No such file or directory

On Thu, Nov 03, 2022 at 05:27:38AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   8e5423e991e8cd0988d0c4a3f4ac4ca1af7d148a
> commit: 4e8ff35878685291978b93543d6b9e9290be770a ASoC: codecs: tlv320adc3xxx: Wrap adc3xxx_i2c_remove() in __exit_p()
> date:   2 weeks ago
> config: arc-buildonly-randconfig-r004-20221103
> compiler: arceb-elf-gcc (GCC) 12.1.0

...

> All errors (new ones prefixed by >>):
> 
>    Complex, interval and imaginary float types are not supported
>    Encountered error while encoding BTF.
> >> FAILED: load BTF from vmlinux: No such file or directory

This looks very much like a false positive, it is difficult to
understand how a change such as the one identified could trigger such an
issue.

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