Windows 8.1 + E-MU USB-Audio 1.0 Driver bug discovered

Patrick · Oct 21, 2013

Upon analyzing a crash as usual, I came upon an 8.1 case in which the user was experiencing USBXHCI.SYS crashes. I took a quick look at the modules list and determined that the driver emusba10.sys (E-MU USB-Audio 1.0 driver) was the probable cause as it was dated from 2010 and was all I had to go on in terms of USB related devices and or software on this system.

Sure enough, a Microsoft engineer posted and eventually investigated the issue and determined:

Based on my investigation, this appears to be a bug in emusba10.sys driver from Creative Labs . This driver is sending a malformed URB. Windows 8 validated the URB before processing. This validation was removed in Windows 8.1 as part of some optimization. Until we come up with resolution for this, please don't plug this device to USB 3.0 port / blue port. Sorry for the inconvenience.

With this said, if any BSOD analysts come across an 8.1 (or 8) based system with USBXHCI.SYS crashes, check the modules list for emusba10.sys and let them know it's a known bug.

Thread itself - BSOD with DRIVER_IRQL_NOT_LESS_OR_EQUAL in USBXHCI.SYS when watching - Microsoft Community

Regards,

Patrick

Vir Gnarus · Oct 22, 2013

I got to learn about URBs today. Yay!

Patrick · Dec 11, 2013

Just an update, a fix has been released in a monthly update!

BSOD Kernel Dump Analysis: E-MU USB-Audio 1.0 fix released!

jcgriff2 · Dec 15, 2013

Nice find, Patrick!

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Windows 8.1 + E-MU USB-Audio 1.0 Driver bug discovered

Patrick

Sysnative Staff

Vir Gnarus

BSOD Kernel Dump Expert

Patrick

Sysnative Staff

jcgriff2

Co-Founder / Admin
BSOD Instructor/Expert
Microsoft MVP (Ret.)

Windows 8.1 + E-MU USB-Audio 1.0 Driver bug discovered

Patrick

Sysnative Staff

Vir Gnarus

BSOD Kernel Dump Expert

Patrick

Sysnative Staff

jcgriff2

Co-Founder / AdminBSOD Instructor/ExpertMicrosoft MVP (Ret.)

Co-Founder / Admin
BSOD Instructor/Expert
Microsoft MVP (Ret.)