Failed to load VMMR0.r0 (VERR_VMM_SMAP_BUT_AC_CLEAR) [FIXED IN SVN]

[CyberManifest]

New VirtualBox virtual machine after new install of test build of VirtualBox 5.0.101955 and Extension Pack 5.0.101934 crashes with the following error: Failed to open a session for the virtual machine Microsoft Windows 10 Virtual Machine.

Failed to load VMMR0.r0 (VERR_VMM_SMAP_BUT_AC_CLEAR).

Result Code: NS_ERROR_FAILURE (0x80004005) Component: ConsoleWrap Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Host: Apple MacBook Pro (Retina, 13-inch, Early 2015); OS X Yosemite 10.10.4 (14E46) Guest: Microsoft Windows 10 Pro 64bit VirtualBox: 5.0.1 r101955

[felixbuenemann]

I have the same problem in VirtualBox 5.0.2-r102096, while the older 5.0.0-r101573 works fine.

System: Mac OS X 10.11 Beta (15A244d), MacBook Pro 13" Early 2015 (MacBookPro12,1), Core i7-5557U (Broadwell), 16GB RAM

[bird]

Could you check /var/system.log* looking for "EFLAGS.AC is clear!" messages from when the problem occurred, please? It will help figuring out where it goes wrong.

[John Malcolm Anderson]

I have the same issue.

When launching the OS from VirtualBox I get this error:

Failed to load VMMR0.r0 (VERR_VMM_SMAP_BUT_AC_CLEAR).

Result Code: 
NS_ERROR_FAILURE (0x80004005)

Component: 
ConsoleWrap

Interface: 
IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Host Details:

• Model Name: MacBook Pro (Retina, 13-inch, Early 2015)
• Model Identifier: MacBookPro12,1
• Processor Name: Intel Core i5
• Processor Speed: 2.7 GHz
• Number of Processors: 1
• Total Number of Cores: 2
• L2 Cache (per Core): 256 KB
• L3 Cache: 3 MB
• Memory: 8 GB
• Boot ROM Version: MBP121.0167.B07

VirtualBox Details:

• OS: Ubuntu (64-bit)
• Base Memory: 512 MB
• Boot Order: Hard-Disk
• Acceleration: VT-x/AMD-V, Nested Paging, PAE/NX
• Video Memory: 128 MB

[pompeiisneaks]

System log output referencting all Virtualbox failures

[pompeiisneaks]

I'm having the same issue on Mac OS X 10.10.4 3.1 GHz i7 16 GB RAM. I've attached my system.log, and I've replaced my hostname and domain in the logs but left the rest there. I'm just attempting to install a new VM with the Ubuntu 15.05 64 bit ISO attached as the installer and it won't boot, I also tried an existing vm and it starts at first but fails with the same error. Any other debugging info you'd need, just let me know. Virtualbox Version: 5.0.2 r102096

~Phil

[mark@…]

Oracle VM VirtualBox Manager 5.0.2 on Mac OS X 10.10.4 (Yosemite)

$ egrep 'EFLAGS.AC' /var/log/system.log # the follow lines repeat

Aug 14 14:37:41 Marks-Air kernel[0]: ModuleInit, line 160: EFLAGS.AC is clear! (0x202)
Aug 14 14:37:41 Marks-Air kernel[0]: ModuleInit, line 189: EFLAGS.AC is clear! (0x202)
Aug 14 14:37:41 Marks-Air kernel[0]: ModuleInit, line 193: EFLAGS.AC is clear! (0x202)
Aug 14 14:37:41 Marks-Air kernel[0]: ModuleInit, line 197: EFLAGS.AC is clear! (0x202)
Aug 14 14:37:41 Marks-Air kernel[0]: ModuleInit, line 201: EFLAGS.AC is clear! (0x202)
Aug 14 14:37:41 Marks-Air kernel[0]: ModuleInit, line 205: EFLAGS.AC is clear! (0x202)
Aug 14 14:37:41 Marks-Air kernel[0]: ModuleInit, line 211: EFLAGS.AC is clear! (0x246)
Aug 14 14:37:41 Marks-Air kernel[0]: ModuleInit, line 216: EFLAGS.AC is clear! (0x202)
Aug 14 14:37:41 Marks-Air kernel[0]: ModuleInit, line 221: EFLAGS.AC is clear! (0x202)
Aug 14 14:37:41 Marks-Air kernel[0]: ModuleInit, line 231: EFLAGS.AC is clear! (0x202)
Aug 14 14:37:41 Marks-Air kernel[0]: vboxdrv: Bad CPU context error at line 4886 in SUPDrv.cpp: EFLAGS.AC is 0!
Aug 14 14:37:41 Marks-Air kernel[0]: vboxdrv: Bad CPU context error at line 4912 in SUPDrv.cpp: EFLAGS.AC is 0!

$ sudo systemstats #excerpt

CPU Summary
===========
      Avg. Frequency:	1.947 GHz
      Package Power::	Pkg: 3.05W, CPU 1.96W, GPU: 0.05W
  Pkg Interrupt Rate:	Total: 2018Hz   ARPT: 66Hz   CMRA: 1Hz   HDEF: 1Hz   IGPU: 261Hz   IPI: 1068Hz   MacBookAir7,2: 41Hz   SMC: 1Hz   TMR: 574Hz   XHC1: 4Hz
     Pkg C-State Res:	Total: 57.2%   C2: 9%   C3: 3%   C6: 1%   C7: 43%   C8: 1%
   Cores C-State Res:	   C3: 0%   C6: 0%   C7: 72%
     GPU C-State Res:	   RC1: 1%   RC6: 85%
       XCPM Tier Res:	   TT5: 0%   background: 2%   idle: 86%   normal: 12%   rt_short: 0%
                 A/C:	43.1%
         User Active:	42.8%
             Battery:	58.6%
         User Active:	58.3%
           User Idle:	79.6%

[Frank Mehnert]

Thanks! Could you try the new OS X test build from here?

[berryfl]

Replying to frank:

Thanks! Could you try the new OS X test build from here?

Test build solves my problem, MacBook Air (13-inch, Early 2015)

[John Malcolm Anderson]

Replying to frank:

Thanks! Could you try the new OS X test build from here?

Great - thanks! :) that test build fixed my problem too. (MacBook Pro (Retina, 13-inch, Early 2015))

[felixbuenemann]

Works on VB 5.0.3-r102137 (MacBookPro12,1).

[pompeiisneaks]

Yes I can confirm as well that this build fixed the issue.

Thanks!

[subfuzion]

I can confirm works on OS X as well.

[abhinandan]

Had the same problem MacBook Pro 13" Early 2015, test build confirm works on my OSX

[Frank Mehnert]

Fix is part of VBox 5.0.4. Thanks to all testers!