invalid root item size

[Matthias Neuer <mneuer@web.de>]

Hi,

since I updated my system I noticed a lot of messages like the following
in dmesg (sda8 is /home).

BTRFS critical (device sda8): corrupt leaf: root=1 block=78397440
slot=32, invalid root item size, have 239 expect 439

I did a 'btrfs scrub' but it didn't find any errors. Then I started the
system in single user mode and tried 'btrfs check' but again, no error
could be found.

I read that the issue could come from bad RAM and so I ran memtest86+
for 12h but it seems my RAM is ok.

Is this a real problem and how can I fix it?

Thanks a lot,
Matthias

$ uname -a
Linux matze-debian 5.3.0-3-amd64 #1 SMP Debian 5.3.15-1 (2019-12-07)
x86_64 GNU/Linux

$ btrfs --version
btrfs-progs v5.4

# btrfs fi show
Label: none  uuid: 0957d767-7f29-4235-b812-329fe851b63e
         Total devices 1 FS bytes used 10.29GiB
         devid    1 size 15.64GiB used 15.64GiB path /dev/sda5

Label: none  uuid: 0d3f2898-446d-4967-bd54-a034108d06b9
         Total devices 1 FS bytes used 12.68GiB
         devid    1 size 18.62GiB used 18.61GiB path /dev/sda7

Label: none  uuid: d6954ba3-3d50-4886-ae3f-a92a5ca83923
         Total devices 1 FS bytes used 16.61GiB
         devid    1 size 24.70GiB used 24.70GiB path /dev/sda8

# btrfs fi df /home
Data, single: total=22.67GiB, used=16.38GiB
System, DUP: total=8.00MiB, used=4.00KiB
System, single: total=4.00MiB, used=0.00B
Metadata, DUP: total=1.00GiB, used=236.50MiB
Metadata, single: total=8.00MiB, used=0.00B
GlobalReserve, single: total=49.54MiB, used=0.00B