kern/186051: [vmware] [panic] FreeBSD 8.4+, 9.x+, 10.0 guest panic with VMWare Server on boot

Mon Apr 28 14:50:01 UTC 2014

The following reply was made to PR kern/186051; it has been noted by GNATS.

From: John Baldwin <jhb at freebsd.org>
To: Steven Spence <freebsd at stratum16.com>
Cc: bug-followup at freebsd.org
Subject: Re: kern/186051: [vmware] [panic] FreeBSD 8.4+, 9.x+, 10.0 guest panic with VMWare Server on boot
Date: Mon, 28 Apr 2014 10:32:23 -0400

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 On Monday, April 21, 2014 01:45:10 PM Steven Spence wrote:
 > Output of "sysctl machdep.idle"
 > 
 > machdep.idle: amdc1e
 > 
 > This is from a 8.3-RELEASE-p15 box.

 Hummm.  We really shouldn't be doing anything differently.  However, we do a
 bit more (including a wrmsr) during idle halt on your machine.  Can you build
 a stable/8 kernel with debug symbols in an 8.3 guest and capture the panic
 messages from booting that kernel?

 > Thanks,
 > Steven
 > 
 > On 04/21/2014 12:37 PM, John Baldwin wrote:
 > > It appears to be crashing because VMWare is raising a privileged
 > > instruction trap in the OS when it invokes 'hlt'.  That seems like a bug
 > > in VMWare.  There isn't a way to disable 'hlt' from the loader prompt
 > > unfortunately.
 > > 
 > > Can you show the output of 'sysctl machdep.idle' under your working
 > > kernel?

 -- 
 John Baldwin

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 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">On Monday, April 21, 2014 01:45:10 PM Steven Spence wrote:</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> Output of "sysctl machdep.idle"</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> </p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> machdep.idle: amdc1e</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> </p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> This is from a 8.3-RELEASE-p15 box.</p>
 <p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; "> </p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">Hummm.  We really shouldn't be doing anything differently.  However, we do a</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">bit more (including a wrmsr) during idle halt on your machine.  Can you build</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">a stable/8 kernel with debug symbols in an 8.3 guest and capture the panic</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">messages from booting that kernel?</p>
 <p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; "> </p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> Thanks,</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> Steven</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> </p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> On 04/21/2014 12:37 PM, John Baldwin wrote:</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> > It appears to be crashing because VMWare is raising a privileged</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> > instruction trap in the OS when it invokes 'hlt'.  That seems like a bug</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> > in VMWare.  There isn't a way to disable 'hlt' from the loader prompt</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> > unfortunately.</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> > </p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> > Can you show the output of 'sysctl machdep.idle' under your working</p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">> > kernel?</p>
 <p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; "> </p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">-- </p>
 <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">John Baldwin</p></body></html>
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