port-arm/55186: tests crash arm pmap

[martin%NetBSD.org@localhost]

>Number:         55186
>Category:       port-arm
>Synopsis:       tests crash arm pmap
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-arm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Apr 19 18:50:00 +0000 2020
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.56
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD unpluged.duskware.de 9.99.56 NetBSD 9.99.56 (UNPLUGED) #310: Sun Apr 19 09:06:43 CEST 2020 martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/evbarm/compile/UNPLUGED evbarm
Architecture: earm
Machine: evbarm
>Description:

Running tests crash the kernel:

[ 10730.9354023] panic: kernel diagnostic assertion "!cache_needs_cleaning" failed: file "../../../../arch/arm/arm32/pmap.c", line 2598
[ 10730.9354023] cpu0: Begin traceback...
[ 10730.9354023] 0xd4dd3cd4: netbsd:db_panic+0x14
[ 10730.9354023] 0xd4dd3cec: netbsd:vpanic+0x11c
[ 10730.9354023] 0xd4dd3d04: netbsd:kern_assert+0x40
[ 10730.9354023] 0xd4dd3d3c: netbsd:pmap_clean_page.isra.17+0x100
[ 10730.9354023] 0xd4dd3d74: netbsd:pmap_page_remove.isra.26+0x44
[ 10730.9354023] 0xd4dd3d9c: netbsd:uvm_loanbreak+0x98
[ 10730.9354023] 0xd4dd3edc: netbsd:uvm_fault_internal+0x1b4c
[ 10730.9354023] 0xd4dd3fac: netbsd:data_abort_handler+0x250
[ 10730.9354023] cpu0: End traceback...


>How-To-Repeat:

cd /usr/tests/lib/libc/sys && atf-run t_mmap

>Fix:
n/a