Hi Kazu, > > Apparently the following patch causes this and it's in 5.10-rc ? > > commit 02772fb9b68e6a72a5e17f994048df832fe2b15e > Author: Joerg Roedel <jroedel@xxxxxxx> > Date: Mon Sep 7 15:15:43 2020 +0200 > > x86/sev-es: Allocate and map an IST stack for #VC handler > > If so, it seems we should support this properly. > Not this one. I use 5.9.6 kernel for testing. It does not use VC handlers ( no SEV-ES support yet). First look in the kernel - didn’t show anything that sets 5th stack. Address seems valid. Will dig deeper. Might need to take a look at crash code, around ebase[] fetching. Will send update on my findings. > btw, hopefully we would like to release the new version (7.2.9) of crash > next week and are preparing, so some patches might be deferred to the next > (7.3.0 ?), especially patches for Linux 5.10. Got it. Thanks for update. My bigger patch that I've sent Today should definitely go post 7.2.9. Thanks, —Alexey -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility