A diff with the fix is attached. It is indeed the changes in /drivers/media/usb/pvrusb2/pvrusb2-eeprom.c between 4.4.0-87 and 4.4.0-89 that causes the driver to crash.
I reverted the changes and compiled them in 4.4.0-96. After finding the newly compiled pvrusb2.ko and placing it in my existing -96 kernel, everything worked perfectly. I can't fully figure out the bug though, in the working -87 version a dummy object is created and used in the call to tveeprom_hauppauge_analog(), which I can't see is using it. I guess there may be a macro or something that expands and then references the object. In the non-working -98 version, the fake object has been replaced with NULL and that seem to cause the problem. Meanwhile, the mainline kernel seem to have removed the parameter entirely. Source code for reference: Working: http://kernel.ubuntu.com/git/ubuntu/ubuntu-xenial.git/tree/drivers/media/usb/pvrusb2/pvrusb2- eeprom.c?h=Ubuntu-4.4.0-87.110 Non-working: http://kernel.ubuntu.com/git/ubuntu/ubuntu-xenial.git/tree/drivers/media/usb/pvrusb2/pvrusb2-eeprom.c?h=Ubuntu-4.4.0-89.112 Mainline kernel change that caused the bug: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/media/usb/pvrusb2/pvrusb2-eeprom.c?h=v4.14-rc1&id=6830733d53a4517588e56227b9c8538633f0c496 Later removal of the problematic function argument in mainline kernel: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/media/usb/pvrusb2/pvrusb2-eeprom.c?h=v4.14-rc1&id=446aba663b8240b24202cb8902b0d5c8f91aa3da (I have no idea if the current mainline kernel works or not) I hope this can get resolved for future 4.4.0 kernels in 16.04 LTS! ** Attachment added: "diff.txt" https://bugs.launchpad.net/ubuntu/+bug/1710419/+attachment/4955829/+files/diff.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1710419 Title: WinTV-PVR-USB2 24xxx (pvrusb2) will not mount To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1710419/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
