https://bugzilla.suse.com/show_bug.cgi?id=1179538 https://bugzilla.suse.com/show_bug.cgi?id=1179538#c4 --- Comment #4 from Borislav Petkov <bpetkov@suse.com> --- Kernel 5.10 on the host and guest works fine: + gdb -batch a.out -ex start -ex 'p /x $mxcsr = 0x9f80' -ex 'p /x $mxcsr' -ex stepi -ex 'p /x $mxcsr' Temporary breakpoint 1 at 0x401001: file amd64-init-x87-values.S, line 27. Temporary breakpoint 1, main () at amd64-init-x87-values.S:27 27 nop $1 = 0x9f80 $2 = 0x9f80 28 fwait $3 = 0x9f80 I *think* this will trigger with the OBS host kernel. Considering how the upstream reporter stopped seeing this after a while, this looks like it "got fixed" in kvm/qemu recently. Just how it looks from here though - I have no hard evidence yet. Thx. -- You are receiving this mail because: You are on the CC list for the bug.