https://bugzilla.kernel.org/show_bug.cgi?id=65561 Bug ID: 65561 Summary: KVM:Entry failed on Single stepping sti instruction Product: Virtualization Version: unspecified Kernel Version: 3.8.8 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: jatin.iitdelhi@xxxxxxxxx Regression: No Hello, I am running a code in which I need to single step some section of code running in a qemu(+kvm) emulated virtual machine with. The vm hangs everytime I try to single step the sti instruction. Exact error message is: KVM: entry failed, hardware error 0x80000021 If you're running a guest on an Intel machine without unrestricted mode support, the failure can be most likely due to the guest entering an invalid state for Intel VT. For example, the guest maybe running in big real mode which is not supported on less recent Intel processors. EAX=00000001 EBX=00000001 ECX=00000000 EDX=00000050 ESI=00000000 EDI=0000038f EBP=c000edc8 ESP=c000ed90 EIP=c0022f85 EFL=00000302 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA] CS =0008 00000000 ffffffff 00c09b00 DPL=0 CS32 [-RA] SS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA] FS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA] GS =0010 00000000 ffffffff 00c09300 DPL=0 DS [-WA] LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT TR =0028 c0107000 00000067 00408b00 DPL=0 TSS32-busy GDT= c004ae20 0000002f IDT= c00495e0 000007ff CR0=80010015 CR2=00000000 CR3=00101000 CR4=00000000 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff4ff0 DR7=0000000000000400 EFER=0000000000000000 Code=44 24 04 65 00 00 00 c7 04 24 78 c9 03 c0 e8 78 fc 00 00 fb <8b> 45 f4 c9 c3 55 89 e5 83 ec 10 e8 6d ff ff ff 89 45 fc fa 8b 45 fc c9 c3 55 89 e5 83 ec The problem is reproducible and I am hitting it everytime I try to run it. -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
