Re: NvmExpressDxe async application crash with UDK debugger

[Arka Sharma <arka.sw1988@gmail.com>]

Please find attached source. Also the variables to detect completion are
not volatile. I have checked in disassembly they are fetched from memory in
the completion loop.

Regards,
Arka

On 12 Apr 2017 10:37 a.m., "Tian, Feng" <feng.tian@intel.com> wrote:

> Arka,
>
> Could you please share us your test code?
>
> Thanks
> Feng
>
> -----Original Message-----
> From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of
> Arka Sharma
> Sent: Wednesday, April 12, 2017 12:59 PM
> To: edk2-devel@lists.01.org
> Subject: [edk2] NvmExpressDxe async application crash with UDK debugger
>
> Hi,
>
> I am testing async io in NvmExpressDxe. The target system is Asrock
> Z97 which I have connected to host with serial port where UDK debugger is
> running. So my application does following
>
> 1. CreateEvent
> 2. Call Passthru
> 3. CmdSent++;
> 4. Repeat 1-3 until not ready from driver 5. while (CmdRecd < CmdSent); 4.
> Close all the events.
>
> CmdRecvd is incremented inside EventCallback. I am allocating both CmdSent
> and CmdRecvd and passing the address of CmdRecvd in CreateEvent. With this
> I face WinDbg exception quite often and it says "Target encountered an
> exception: Vector = 6, Error Code = 00000000".
> I can share the application code for more clarity. I am building with /Od
> and GenFw with --keepexceptiontable
>
> Regards,
> Arka
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