Re: USB lockup

To: tech-kern%NetBSD.org@localhost
Subject: Re: USB lockup
From: Edgar Fuß <ef%math.uni-bonn.de@localhost>
Date: Mon, 23 Nov 2020 18:06:01 +0100

> The ddb backtrace usually is
> bus_space_read_4()
> bintime()
> ohci_softintr()
> usb_soft_intr()
> softint_dispatch()
> 
> The system call causing the lock-up is a USB_DEVICEINFO ioctl on /dev/usb0 
> with udi_addr=2, which corresponds to ugen0.
I tried a -current kernel from nyftp today, and it locks up the same way.

References:
- ktrace-ing a command that locks up the machine
  - From: Edgar Fuß
- Re: ktrace-ing a command that locks up the machine
  - From: Mouse
- Re: ktrace-ing a command that locks up the machine
  - From: Edgar Fuß
- Re: ktrace-ing a command that locks up the machine
  - From: Paul Goyette
- Re: ktrace-ing a command that locks up the machine
  - From: Paul Goyette
- USB lockup (was: ktrace-ing a command that locks up the machine)
  - From: Edgar Fuß

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