Re: usb panic

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Sat, Sep 01, 2018 at 04:47:32PM +0100, Patrick Welche wrote:
> Just tried today's source on the usual -current/amd64 laptop, and:
> 
> fatal breakpoint trap in supervisor mode
> trap type 1 code 0 rip 0xffffffff8021cd05 cs 0x0 rflags 0x202 cr2 0 ilevel 0 rsp 0xfffff2b68fa981c0 pid 0.46 lowest kstack 0xffffab00adc0b2c0
> ...
> vpanic() at netbsd:breakpint+0x5
> ch_voltag_convert_in()
> usb_insert_transfer() +0xe6
> roothub_ctrl_transfer() +0x2c
> usbd_transfer() +0xa7
> usbd_do_request_flags() +0xba
> usbd_get_initial_ddesc() +0x55
> usbd_new_device() +0x1d2
> usb_doattach() +0xa1
> config_interrupts_thread() +0x35
> 
> (no external usb devices connected... back to netbsd.old...)

Bad computer day... added a load of DEBUG options, I don't get as far as
the USB:

Stopped in pid 0.80 (system)  == configroot

breakpoint
vpanic
snprintf
lockdebug_more
lockdebug_alloc
_mutex_init
intel_dp_init_connector
intel_dp_init
intel_modeset_init
i915_driver_load
drm_dev_register
drm_pci_attach
i915drmkms_attach_real
config_mountroot_thread