Re: kern/59185: panic over KASSERTMSG(dev->ud_ifaces == NULL) on Dell Latitude 7490

[Emmanuel Nyarko <emmankoko519%gmail.com@localhost>]

Hi,


> On 4 Oct 2025, at 7:42 PM, Taylor R Campbell <riastradh%NetBSD.org@localhost> wrote:
> 
>> Date: Sat, 4 Oct 2025 19:06:11 +0000
>> From: Taylor R Campbell <riastradh%NetBSD.org@localhost>
>> 
>>> Date: Sat, 4 Oct 2025 19:03:59 +0000
>>> From: Taylor R Campbell <riastradh%NetBSD.org@localhost>
>>> 
>>> Can you please try the attached patch and see if it helps?
>>> 
>>> I suspect this is the same issue as:
>>> 
>>> PR kern/59624: Booting NetBSD-11 from USB on my Dell machine panics
>>> and hangs
>>> https://gnats.NetBSD.org/59624
>>> 
>>> PR kern/57447: HEAD fails to probe USB devices and fails to boot up
>>> https://gnats.NetBSD.org/57447
>>> 
>>> syzbot: UBSan: Undefined Behavior in usb_free_device (2)
>>> https://syzkaller.appspot.com/bug?id=e6d4449a128e73a9a88100a5cc833e5cae9fecae
>> 
>> ...patch attached this time
> 
> Corrected patch attached!
> <pr59185-usbconfignoabuse-v2.diff>

I tested this patch and i am now able to boot from netbsd-11 kernel on my Dell machine.

Thanks!

Emmanuel.