Bug#940105: linux: serious corruption issue with btrfs

[Christoph Anton Mitterer <calestyo@scientia.net>]

Source: linux
Version: 5.2.9-2
Severity: critical
Tags: upstream patch
Justification: causes serious data loss


Hi.

There were some reports over the last weeks from users on linux-btrfs which
suffered from catastrophic btrfs corruption.
The bug which is apparently a regression introduced in 5.2 has now been found[0]
an a patch is available[1].

Since it's unclear how long it will take to be part of a stable release and when
Debian will pick this up in unstable, please consider to cherry-pick the patch.

Thanks,
Chris.

[0] https://lore.kernel.org/linux-btrfs/9731b0e7-81f3-4ee5-6f89-b4fd8d981736@petaramesh.org/T/#m38d726b09e784f1ffbd26edf13f723f71045723e
[1] https://patchwork.kernel.org/patch/11141559/


-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.2.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_DE.UTF-8, LC_CTYPE=en_DE.UTF-8 (charmap=UTF-8), LANGUAGE=en_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)