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[Xen-devel] Crash of guest with nested vmx with Unknown nested vmexit reason 80000021.


  • To: xen-devel@xxxxxxxxxxxxx
  • From: Jeroen Groenewegen van der Weyden <groen692@xxxxxxxxx>
  • Date: Tue, 30 Sep 2014 17:55:18 +0200
  • Delivery-date: Tue, 30 Sep 2014 15:59:01 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>

Hi,

Recently I updated my openSuse box from 12.3 to 13.1. On this box I run xen with several guests. One of these guests is an appliance that has 4 kvm guests running.
When I start this appliance with the nested vmx feature the appliance crashes either immediately or after a few minutes.

This same guest was running without a problem on opensuse releases 11.4 until 12.3
( remark that about 3 year ago some patches were written by tim degan to make this appliance work )

dom0
opensuse 13.1 x86
kernel 3.11.10-21-xen
xen: 4.3..2_01-21.1

- domu (HVM)
- sles11sp2
- mem: 8 GB
- vcpu: 4
- kvm with 4 guest
any body any thought on this?

BR,
Jeroen


==== outup xl demsg
(XEN) vvmx.c:2459:d5 Unknown nested vmexit reason 80000021.
(XEN) Failed vm entry (exit reason 0x80000021) caused by invalid guest state (0).
(XEN) ************* VMCS Area **************
(XEN) *** Guest State ***
(XEN) CR0: actual=0x0000000080000033, shadow=0x0000000000000011, gh_mask=ffffffffffffffff
(XEN) CR4: actual=0x0000000000002050, shadow=0x0000000000000000, gh_mask=ffffffffffffffff
(XEN) CR3: actual=0x00000000feffc000, target_count=0
(XEN)      target0=0000000000000000, target1=0000000000000000
(XEN)      target2=0000000000000000, target3=0000000000000000
(XEN) RSP = 0x0000000000000398 (0x0000000000000398)  RIP = 0x000000000000045f (0x000000000000045f)
(XEN) RFLAGS=0x0000000000000006 (0x0000000000000006)  DR7 = 0x0000000000000400
(XEN) Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000
(XEN) CS: sel=0x9dcc, attr=0x0009b, limit=0x00000ecb, base=0x0000000000689920
(XEN) DS: sel=0x9db4, attr=0x00093, limit=0x000038b9, base=0x00000000006778b0
(XEN) SS: sel=0x9e7c, attr=0x00093, limit=0x00000401, base=0x00000000006ba960
(XEN) ES: sel=0x3ec8, attr=0x00093, limit=0x00000099, base=0x000000000073c608
(XEN) FS: sel=0x0000, attr=0x1c000, limit=0xffffffff, base=0x0000000000000000
(XEN) GS: sel=0x0000, attr=0x1c000, limit=0xffffffff, base=0x0000000000000000
(XEN) GDTR:                           limit=0x0000ffff, base=0x0000000001000000
(XEN) LDTR: sel=0x0820, attr=0x00082, limit=0x0000ffff, base=0x0000000001010400
(XEN) IDTR:                           limit=0x000003ff, base=0x0000000001010000
(XEN) TR: sel=0x0690, attr=0x00083, limit=0x0000002b, base=0x0000000001213a30
(XEN) Guest PAT = 0x0000050100070406
(XEN) TSC Offset = fffd869460e8dc28
(XEN) DebugCtl=0000000000000000 DebugExceptions=0000000000000000
(XEN) Interruptibility=0008 ActivityState=0000
(XEN) *** Host State ***
(XEN) RSP = 0xffff83083ff27f90  RIP = 0xffff82c4c01d9330
(XEN) CS=e008 DS=0000 ES=0000 FS=0000 GS=0000 SS=0000 TR=e040
(XEN) FSBase=0000000000000000 GSBase=0000000000000000 TRBase=ffff83083ff2dc80
(XEN) GDTBase=ffff8318035ee000 IDTBase=ffff8318035fa000
(XEN) CR0=0000000080050033 CR3=0000000eefcc0000 CR4=00000000000026f0
(XEN) Sysenter RSP=ffff83083ff27fc0 CS:RIP=e008:ffff82c4c0216c60
(XEN) Host PAT = 0x0000050100070406
(XEN) *** Control State ***
(XEN) PinBased=0000003f CPUBased=b6b9e5fa SecondaryExec=000004eb
(XEN) EntryControls=000011ff ExitControls=000fefff
(XEN) ExceptionBitmap=00040042
(XEN) VMEntry: intr_info=80000202 errcode=5d021101 ilen=00000003
(XEN) VMExit: intr_info=00000000 errcode=00000000 ilen=00000003
(XEN)         reason=80000021 qualification=00000000
(XEN) IDTVectoring: info=80000202 errcode=00000000
(XEN) TPR Threshold = 0x00
(XEN) EPT pointer = 0x0000000ef022501e
(XEN) Virtual processor ID = 0xc0d0
(XEN) **************************************
(XEN) domain_crash called from vmx.c:2342
(XEN) Domain 5 (vcpu#3) crashed on cpu#20:
(XEN) ----[ Xen-4.3.2_01-21.1  x86_64  debug=n  Not tainted ]----
(XEN) CPU:    20
(XEN) RIP:    9dcc:[<000000000000045f>]
(XEN) RFLAGS: 0000000000000006   CONTEXT: hvm guest
(XEN) rax: 0000000000000001   rbx: 00000000000026db   rcx: 000000009dd40003
(XEN) rdx: 00000000248816a0   rsi: 0000000000000000   rdi: 0000000026b010e4
(XEN) rbp: 00000000000003ae   rsp: 0000000000000398   r8:  0000000000000000
(XEN) r9:  0000000000000000   r10: 0000000000000000   r11: 0000000000000000
(XEN) r12: 0000000000000000   r13: 0000000000000000   r14: 0000000000000000
(XEN) r15: 0000000000000000   cr0: 0000000080000033   cr4: 0000000000002010
(XEN) cr3: 00000000feffc000   cr2: 0000000000000000
(XEN) ds: 9db4   es: 3ec8   fs: 0000   gs: 0000   ss: 9e7c   cs: 9dcc

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