Re: next: kernel BUG at fs/ext4/mballoc.c:4369!

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On Mon, 17 Jul 2023 at 10:01, Theodore Ts'o <tytso@xxxxxxx> wrote:
>
> On Sun, Jul 16, 2023 at 11:32:51AM +0530, Naresh Kamboju wrote:
> > Following kernel BUG noticed while testing LTP fs testing on x86_64
> > arch x86_64 on the Linux next-20230716 built with clang toolchain.
>
> Hmm, I'm not seeing the next-20230716 tag at:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/
>
> or
>
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next-history.git/
>
> I see a tag for next-20230717 and for next-20230714, but not
> next-20230716.  Was this a typo?  Does it reproduce on the
> next-20230717 tree?

Sorry it is a Typo,
Here is the kernel version, 6.5.0-rc1-next-20230714

>
> Also, since I don't use LTP, can you give me a trimmed-down
> reproducer, to save me some time?

Boot images for x86_64,
I have defconfig + test KConfigs.

   kernel:
      url:
        https://storage.tuxsuite.com/public/linaro/lkft/builds/2SY3QjxEGsLoae4uGpfjPnZqwKC/bzImage
    modules:
      url:
        https://storage.tuxsuite.com/public/linaro/lkft/builds/2SY3QjxEGsLoae4uGpfjPnZqwKC/modules.tar.xz
    nfsrootfs:
      url:
        https://storage.tuxsuite.com/public/linaro/lkft/oebuilds/2SPaZ6KtLE32NNDGqKrHtwJJz1g/images/intel-corei7-64/lkft-console-image-intel-corei7-64-20230711051126.rootfs.tar.xz


Build and install LTP:

# git clone https://github.com/linux-test-project/ltp.git
# cd ltp
# make autotools
# ./configure
# make
# make install

Connect external newly formatted SSD drive via USB and mount.
This drive will be used by LTP at run time to create temporary test files.


Run LTP

  cd /opt/ltp/
  ./runltp -f fs - d /mount/SSD-external-storage-drive


ref:
 - https://github.com/linux-test-project/ltp

- Naresh

>
> Thanks!!
>
>                                         - Ted




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