Length parameter of ScsiPortGetPhysicalAddress

NTDEV
1

Still trying to track down my hibernate crash. When I call
ScsiPortGetPhysicalAddress (which I assume is allowed and required
because the dump/hiber driver isn’t ‘virtual’), the Length parameter is
unchanged. The return value isn’t 0 though which means the call
succeeded.

Can anyone tell me what is going on?

Thanks

James

2

I have some dim recollection that one should ignore the length
parameter in the dump path.
Mark Roddy

On Thu, Jan 20, 2011 at 2:58 AM, James Harper
wrote:
> Still trying to track down my hibernate crash. When I call
> ScsiPortGetPhysicalAddress (which I assume is allowed and required
> because the dump/hiber driver isn’t ‘virtual’), the Length parameter is
> unchanged. The return value isn’t 0 though which means the call
> succeeded.
>
> Can anyone tell me what is going on?
>
> Thanks
>
> James
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer
>

3

What you see in Length? Zero? What do you set it to?

4

I was seeing random values that were definitely not lengths. I then initialized the length to -1 before I made the call and it remained -1, so the function is updating it.

I wish this stuff was documented better. I come from a Linux background so I’m used to poor or non-existent documentation but at least then I could just look at the source code if I had any doubts about how it was supposed to work. It seems that the crash dump driver gives me the worst of both worlds :frowning:

Sent from my iPhone

On 21/01/2011, at 11:09, “xxxxx@broadcom.com” wrote:

> What you see in Length? Zero? What do you set it to?
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer

5

Is not updating it I meant

Sent from my iPhone

On 21/01/2011, at 11:24, “James Harper” wrote:

> I was seeing random values that were definitely not lengths. I then initialized the length to -1 before I made the call and it remained -1, so the function is updating it.
>
> I wish this stuff was documented better. I come from a Linux background so I’m used to poor or non-existent documentation but at least then I could just look at the source code if I had any doubts about how it was supposed to work. It seems that the crash dump driver gives me the worst of both worlds :frowning:
>
> Sent from my iPhone
>
> On 21/01/2011, at 11:09, “xxxxx@broadcom.com” wrote:
>
>> What you see in Length? Zero? What do you set it to?
>>
>> —
>> NTDEV is sponsored by OSR
>>
>> For our schedule of WDF, WDM, debugging and other seminars visit:
>> http://www.osr.com/seminars
>>
>> To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer

6

James,

Which OS? Win7/2K8R2 SP1 have a bug where the hiber/crash kernel
checks the length of the initialization parameters against the size of
the structure as defined in storport.h. So, if you have a scsiport
driver you have to lie.

Paul

On 20 January 2011 07:58, James Harper wrote:
> Still trying to track down my hibernate crash. When I call
> ScsiPortGetPhysicalAddress (which I assume is allowed and required
> because the dump/hiber driver isn’t ‘virtual’), the Length parameter is
> unchanged. The return value isn’t 0 though which means the call
> succeeded.
>
> Can anyone tell me what is going on?
>
> Thanks
>
> James
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer
>

–
Paul Durrant
http://www.linkedin.com/in/pdurrant

7

> James,

Which OS? Win7/2K8R2 SP1 have a bug where the hiber/crash kernel
checks the length of the initialization parameters against the size of
the structure as defined in storport.h. So, if you have a scsiport
driver you have to lie.

I am testing on a 32 bit Windows 2008 server. Do you have any links to
articles explain the R2 bug? I’m using storport now though, not
scsiport.

Thanks

James

8

James,

It appears Microsoft don’t have anything on their support site yet,
although I guess that’s because they’ve not actually issued a fix yet.
It should not affect you though as the problem is limited to
win7/2k8r2 sp1. I don’t have any experience of storport so I don’t
have any other suggestions.

Paul

On 21 January 2011 10:42, James Harper wrote:
>> James,
>>
>> ? Which OS? Win7/2K8R2 SP1 have a bug where the hiber/crash kernel
>> checks the length of the initialization parameters against the size of
>> the structure as defined in storport.h. So, if you have a scsiport
>> driver you have to lie.
>>
>
> I am testing on a 32 bit Windows 2008 server. Do you have any links to
> articles explain the R2 bug? I’m using storport now though, not
> scsiport.
>
> Thanks
>
> James
>
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer
>

–
Paul Durrant
http://www.linkedin.com/in/pdurrant

9

Thanks Paul.

-----Original Message-----
From: xxxxx@lists.osr.com [mailto:bounce-438331-
xxxxx@lists.osr.com] On Behalf Of Paul Durrant
Sent: Friday, 21 January 2011 21:59
To: Windows System Software Devs Interest List
Subject: Re: [ntdev] Length parameter of ScsiPortGetPhysicalAddress

James,

It appears Microsoft don’t have anything on their support site yet,
although I guess that’s because they’ve not actually issued a fix yet.
It should not affect you though as the problem is limited to
win7/2k8r2 sp1. I don’t have any experience of storport so I don’t
have any other suggestions.

Paul

On 21 January 2011 10:42, James Harper wrote:
> >> James,
> >>
> >> ? Which OS? Win7/2K8R2 SP1 have a bug where the hiber/crash kernel
> >> checks the length of the initialization parameters against the size of
> >> the structure as defined in storport.h. So, if you have a scsiport
> >> driver you have to lie.
> >>
> >
> > I am testing on a 32 bit Windows 2008 server. Do you have any links to
> > articles explain the R2 bug? I’m using storport now though, not
> > scsiport.
> >
> > Thanks
> >
> > James
> >
> >
> > —
> > NTDEV is sponsored by OSR
> >
> > For our schedule of WDF, WDM, debugging and other seminars visit:
> > http://www.osr.com/seminars
> >
> > To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
> >
>
>
>
> –
> Paul Durrant
> http://www.linkedin.com/in/pdurrant
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer