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

["Taylor R Campbell via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR kern/59185; it has been noted by GNATS.

From: Taylor R Campbell <riastradh%NetBSD.org@localhost>
To: "Emile `iMil' Heitor" <imil%home.imil.net@localhost>,
	Emmanuel Nyarko <emmankoko519%gmail.com@localhost>,
	Salil Wadnerkar <bsdprg%tuta.io@localhost>
Cc: gnats-bugs%NetBSD.org@localhost, netbsd-bugs%NetBSD.org@localhost
Subject: Re: kern/59185: panic over KASSERTMSG(dev->ud_ifaces == NULL) on Dell Latitude 7490
Date: Sat, 4 Oct 2025 19:03:59 +0000

 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=3De6d4449a128e73a9a88100a5cc833e5cae9f=
 ecae