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Bug#977647: 5.10.1 Debian kernel does not boot on amd64 with btrfs rootfs



Control: tag -1 moreinfo
Control: severity -1 important
Justification: does not affect all users

Hi,

Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> writes:

> Package: linux-image-5.10.0-trunk-amd64-unsigned
> Version: 5.10.1-1~exp1
> Severity: grave
> Justification: renders package unusable
>

I just confirmed that 5.10.1-1~exp1 + btrfs boots when using a
debian-testing-amd64-netinst.iso downloaded today (once the repo has
been added and the package installed from experimental, of course).  I
tested both signed and unsigned variants.

> Dear Debian kernel maintainers,
>
> Debian kernel 5.10.1 in experimental does not boot on my x86_64 notebook
> with btrfs rootfs.
> As I am suspecting btrfs as
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=977645
>
> This strengthen my suspicion about 5.10.1 btrfs...
>
> Photo of booting console is found at
> https://photos.app.goo.gl/zyCg4ZH8zDgwoiBr8
>

Is it possible to shift+page-up to reveal the backtrace?  The backtrace
section ends with "---[ end trace 75435… ]---" If that's not possible,
see if you can get a copy from /var/log after rebooting with a working
kernel or when using a network disk.  If that's not possible, and you
have good reflexes, you could try ctr+s or scroll-lock to pause the
kernel output at just the right moment, but it's probably easier to just
set up remote logs:

  https://wiki.debian.org/Rsyslog

Finally, what btrfs features (profiles, compression, layers of storage,
etc) are being used?

Thank you,
Nicholas

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