Good day. I am investigating about a weird behavior of my system that leads to frequent freezes. The main components of my system are: Fedora 33 (kernel 5.9.13-200.fc33.x86_64), cryptsetup 2.3.4, an AMD Ryzen 5 3600, 16 GB RAM 3200 MHz, a Samsung 860 PRO used for 32 GB swap and LVM Cache, that is encrypted with following criteria: # cryptsetup status ssd_cache /dev/mapper/ssd_cache is active and is in use. type: LUKS2 cipher: aes-xts-plain64 keysize: 512 bits key location: keyring device: /dev/sdc sector size: 512 offset: 32768 sectors size: 500085424 sectors mode: read/write flags: discards During write bursts of swap (for example when booting some virtual machines), the system completely freezes, I cannot even move the mouse pointer. The system may remain in stuck state even for 10 minutes. When the (host) system turns back to normal, I can see for example in virtual machines, the following error in console ======== Message from syslogd@localhost at Dec 15 01:14:32 ... kernel:watchdog: BUG: soft lockup - CPU#0 stuck for 124s! [0x564a0d4baad0-:1924] ======== To check if the complete stuck of the system was caused by encryption, I tried to disable SSD swap, and create a unencrypted swap on a regular HDD, and then when I had write bursts, the system slowed, but it did not freeze. How could I proceed in my investigation to find out if it is a matter of system configuration, a bug, etc.? Thank you _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx https://www.saout.de/mailman/listinfo/dm-crypt
