I did rebuild debian kernel (linux-source-5.4 == 5.4.19-1~bpo10+1) with ubuntu 5.4.0-26-generic and it works again. And tested kernel for a few days - no corruption!
Looks like something wrong with original debian config which causes random data loss on my SSD. Attaching diffconfig's. config-5.4.19 - debian source code compiled with ubuntu config config-5.4.0-0.bpo.4-amd64 - debian default kernel config-5.4.0-26-generic - ubuntu kernel /usr/src/linux-headers-5.4.19/scripts/diffconfig config-5.4.19 config-5.4.0-26-generic > ~/debian-5.4.19-ubuntu-5.4.0-26-generic.txt /usr/src/linux-headers-5.4.19/scripts/diffconfig config-5.4.0-0.bpo.4-amd64 config-5.4.19 > ~/debian-5.4.0-0.bpo.4-debian-5.4.19.txt Maybe anyone can suggest which configs / values should I try to enable / disable. -- AK
debian-5.4.19-ubuntu-5.4.0-26-generic.txt.gz
Description: application/gzip
debian-5.4.0-0.bpo.4-debian-5.4.19.txt.gz
Description: application/gzip
