NetBSD Problem Report #52672

From www@NetBSD.org  Sun Oct 29 17:49:20 2017
Return-Path: <www@NetBSD.org>
Received: from mail.netbsd.org (mail.netbsd.org [199.233.217.200])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(Client CN "mail.NetBSD.org", Issuer "mail.NetBSD.org CA" (not verified))
	by mollari.NetBSD.org (Postfix) with ESMTPS id 0041D7A1C8
	for <gnats-bugs@gnats.NetBSD.org>; Sun, 29 Oct 2017 17:49:19 +0000 (UTC)
Message-Id: <20171029174918.C274D7A1F1@mollari.NetBSD.org>
Date: Sun, 29 Oct 2017 17:49:18 +0000 (UTC)
From: coypu@sdf.org
Reply-To: coypu@sdf.org
To: gnats-bugs@NetBSD.org
Subject: 'continue' in ddb panics if under load
X-Send-Pr-Version: www-1.0

>Number:         52672
>Category:       port-xen
>Synopsis:       'continue' in ddb panics if under load
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    port-xen-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Oct 29 17:50:00 +0000 2017
>Originator:     coypu
>Release:        NetBSD 8.99.5
>Organization:
>Environment:
NetBSD lio.xen.prgmr.com 8.99.5 NetBSD 8.99.5 (XEN3_DOMU) #21: Sun Oct 29 17:08:27 UTC 2017  lio@lio.xen.prgmr.com:/home/lio/obj/sys/arch/amd64/compile/XEN3_DOMU amd64

>Description:
ss          e02b
netbsd:breakpoint+0x5:  leave
db{0}> c  
WARNING: SPL NOT LOWERED ON TRAP EXIT 8 6
fatal asynchronous system trap in supervisor mode
trap type 3 code 0 rip 0xffffffff80206505 cs 0xe030 rflags 0x202 cr2 0x75611aca6020 ilevel 0x8 rsp 0xffffa001c065f800
curlwp 0xffffa00015174460 pid 1765.1 lowest kstack 0xffffa001c065c2c0
panic: trap
cpu0: Begin traceback...
vpanic() at netbsd:vpanic+0x140
snprintf() at netbsd:snprintf
startlwp() at netbsd:startlwp
alltraps() at netbsd:alltraps+0x104
xencons_tty_input() at netbsd:xencons_tty_input+0xb2
xencons_handler() at netbsd:xencons_handler+0x6a
xen_intr_biglock_wrapper() at netbsd:xen_intr_biglock_wrapper+0x1d
evtchn_do_event() at netbsd:evtchn_do_event+0x27e
do_hypervisor_callback() at netbsd:do_hypervisor_callback+0x17a
hypervisor_callback() at netbsd:hypervisor_callback+0xa3
pmap_zero_page() at netbsd:pmap_zero_page+0x197
uvm_pagealloc_strat() at netbsd:uvm_pagealloc_strat+0x513
uvmfault_promote() at netbsd:uvmfault_promote+0x2aa
uvm_fault_internal() at netbsd:uvm_fault_internal+0xc83
trap() at netbsd:trap+0x393
--- trap (number 6) ---
75611c0a8baa:
cpu0: End traceback...

dumping to dev 142,1 (offset=20971519, size=0): not possible
rebooting...


compiling in background (not printing) doesn't seem to change things.
>How-To-Repeat:

>Fix:

Home	PR Database Search