kern/55745: spdmem_i2c_match() panics

[Hauke Fath <hf%spg.tu-darmstadt.de@localhost>]

>Number:         55745
>Category:       kern
>Synopsis:       spdmem_i2c_match() panics
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Oct 22 09:05:00 +0000 2020
>Originator:     Hauke Fath
>Release:        NetBSD 9.0_STABLE
>Organization:
Technische Universitaet Darmstadt
>Environment:
	
	
System: NetBSD Gstoder 9.0_STABLE NetBSD 9.0_STABLE (GA-MA770-UD3-$Revision$) #0: Mon Jul 13 16:36:43 CEST 2020 hf@Hochstuhl:/var/obj/netbsd-builds/9/amd64/sys/arch/amd64/compile/GA-MA770-UD3 amd64
Architecture: x86_64
Machine: amd64
>Description:

	For a few months, netbsd-9 kernels on my amd64 desktop 
	<https://www2.nt.tu-darmstadt.de/~hf/netbsd/GA-MA770-UD3/GA-MA770-UD3.kconfig>
	
	have been panicking during spdmem auto-configuration:
	<https://www2.nt.tu-darmstadt.de/~hf/netbsd/GA-MA770-UD3/GA-MA770-UD3-panic.jpg>

	The above kernel is the last one to boot, its dmesg is here:
	<https://www2.nt.tu-darmstadt.de/~hf/netbsd/GA-MA770-UD3/GA-MA770-UD3_2020_07_13.dmesg>


	
>How-To-Repeat:

	Configure a netbsd-9 kernel to probe spdmem.

	
>Fix:
	Yes, please.
	

>Unformatted: