https://bugzilla.kernel.org/show_bug.cgi?id=215740 --- Comment #11 from Alan Stern (stern@xxxxxxxxxxxxxxxxxxx) --- I don't think it has anything to do with the init3: section. The stack trace shows that the problem stems from hub_ext_port_status(), probably called by port_event() within hub_event(). And the place where hub_ext_port_status() calls usb_control_msg() indirectly is protected by a mutex! The I/O buffer being mapped multiple times is hub->status->port, and it doesn't get used anywhere else in the hub driver AFAICS. (There is a comment about the phy driver also using that buffer; I don't know what it refers to.) [It would be easier to track this down if the DMA subsystem would cause these erroneous mappings to fail instead of pretending that they have succeeded. Grumble...] I'm stumped. I'll try to find time to reproduce it on my own system. Probably would have noticed it before now if I had tried connecting an external hub recently, but that just hasn't come up. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
