kern/52072: shark crashes at boot

[martin%NetBSD.org@localhost]

>Number:         52072
>Category:       kern
>Synopsis:       shark crashes at boot
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Mar 14 19:35:00 +0000 2017
>Originator:     Martin Husemann
>Release:        NetBSD 7.99.66
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD night-rest.duskware.de 7.99.66 NetBSD 7.99.66 (GENERIC) #54: Tue Mar 14 20:00:52 CET 2017 martin%martins.aprisoft.de@localhost:/ssd/src/sys/arch/shark/compile/GENERIC shark
Architecture: earmv4
Machine: shark
>Description:

My other shark (with non-static network config) crashes reliably at boot:

Waiting for DAD to complete for statically configured addresses...
Starting dhcpcd.
panic: kernel diagnostic assertion "VALID_R15_PSR(tf->tf_pc, tf->tf_spsr)" failed: file "../../../../arch/arm/arm/syscall.c", line 112 
cpu0: Begin traceback...
0xf4221e68: netbsd:db_panic+0xc00000000
0xf4221e80: netbsd:vpanic+0x13400000000
0xf4221e98: netbsd:kern_assert+0x4000000000
0xf4221f08: netbsd:swi_handler+0xbc00000000
0xf4221f84: netbsd:swi_entry+0x5c00000000
0xf4221fac: netbsd:idle_loop+0x13800000000
cpu0: End traceback...

Waiting for DAD to complete for statically configured addresses...
Starting dhcpcd.
Fatal kernel mode prefetch abort at 0x0156963c
trapframe: 0xf4221f00, spsr=40000092
r0 =00000024, r1 =f03335f8, r2 =00000000, r3 =00000001
r4 =f1184b00, r5 =f03335f8, r6 =f1182b70, r7 =00000010
r8 =00000000, r9 =00000000, r10=00000000, r11=f4221f6c
r12=f4221f70, ssp=f4221f50, slr=f01cd5e4, pc =0156963c

Stopped in pid 0.2 (system) at  156963c:        address 0x156963c is invalid
andeq   r0, r0, r0
db> bt
0xf4221f6c: netbsd:kpreempt_enable+0xc
0xf4221f84: netbsd:sched_curcpu_runnable_p+0x34
0xf4221fac: netbsd:idle_loop+0x148

The shark with static network config (so no dhcpcd) boots fine (same kernel
source).

>How-To-Repeat:

Boot a shark with dhcp network config

>Fix:
n/a