Yll Buzoku

Volker, Checking the file /iodev/usb/usb_ehci.cc on the master branch of the github repo, I can confirm the line is still there, now at line 2143. I'll need some more time to build a minimal example to test if the bug is still present, but seeing as the line of code is still there, I suspect so. I'm currently running Bochs 2.7 (built from SVN August 1, 2021) on (I think) all my machines. I'll test first against that, and if the bug is still there, I'll build a current version and test against it....

Hey, sorry, I should've caught that, twas early in the morning. The suggested bugfix would be: Line 1951: - if (q!=NULL) { Line 1951: + if (q! =NULL && q ->dev != NULL) { Im running some custom OS code, which erroneously was trying to access a device on address 1 without first setting a device to respond to address 1 (which has since been corrected and has been observed to work in Bochs and on real hardware ). When I have time, ill check this in QEMU to see if its present there too, and once I have...

Sending standard device requests to non assigned address on EHCI controller causes Seg. Fault