NetBSD Problem Report #52937
From www@NetBSD.org Sun Jan 21 09:55:46 2018
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 202667A1E1
for <gnats-bugs@gnats.NetBSD.org>; Sun, 21 Jan 2018 09:55:46 +0000 (UTC)
Message-Id: <20180121095545.381667A264@mollari.NetBSD.org>
Date: Sun, 21 Jan 2018 09:55:45 +0000 (UTC)
From: alnsn@yandex.ru
Reply-To: alnsn@yandex.ru
To: gnats-bugs@NetBSD.org
Subject: NetBSD 8.0_BETA panics in pmap_remove_pte
X-Send-Pr-Version: www-1.0
>Number: 52937
>Category: kern
>Synopsis: NetBSD 8.0_BETA panics in pmap_remove_pte
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sun Jan 21 10:00:01 +0000 2018
>Last-Modified: Thu Jan 25 00:25:01 +0000 2018
>Originator: Alexander Nasonov
>Release: NetBSD 8.0_BETA
>Organization:
XMM SWAP LTD
>Environment:
NetBSD ns3078965 8.0_BETA NetBSD 8.0_BETA (NOIPMI) #0: Sun Dec 17 22:39:04 GMT 2017 alnsn@nebeda:/home/alnsn/netbsd-8/src/sys/arch/amd64/compile/obj/NOIPMI amd64
>Description:
The kernel was compiled without ipmi as a workaround for this bug:
pkg/52764 (NetBSD 8.0_BETA crashed - ipmi0: workqueue busy: updates stopped)
This time it crashed differently:
panic: pmap_remove_pte: PG_PVLIST with pv-untracked page va = 0x7f7eba200000 pa = 0xffe8dea6c0000 (0xffe8dea6c0)
cpu5: Begin traceback...
vpanic() at netbsd:vpanic+0x140
snprintf() at netbsd:snprintf
pmap_remove_pte() at netbsd:pmap_remove_pte+0x2e3
pmap_remove() at netbsd:pmap_remove+0x23d
uvm_unmap_remove() at netbsd:uvm_unmap_remove+0x207
uvmspace_free() at netbsd:uvmspace_free+0xe4
exit1() at netbsd:exit1+0x1a0
sigexit() at netbsd:sigexit+0x15a
sendsig() at netbsd:sendsig
lwp_userret() at netbsd:lwp_userret+0x1be
trap() at netbsd:trap+0x926
--- trap (number 6) ---
7f7eba200770
cpu5: End traceback...
dumping to dev 20,1 (offset=327, size=8272343):
dump device not ready
dmesg: https://www.netbsd.org/~alnsn/ovh-dmesg-netbsd8.out
>How-To-Repeat:
Not known.
The box had been running fine to several days. Eventually, it stopped accepting ssh connections over tor and panicked a couple of hours later.
>Fix:
Not known.
>Audit-Trail:
From: Alexander Nasonov <alnsn@yandex.ru>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
netbsd-bugs@netbsd.org
Subject: Re: kern/52937: NetBSD 8.0_BETA panics in pmap_remove_pte
Date: Thu, 25 Jan 2018 00:24:40 +0000
Alexander Nasonov wrote:
> This time it crashed differently:
>
> panic: pmap_remove_pte: PG_PVLIST with pv-untracked page va = 0x7f7eba200000 pa = 0xffe8dea6c0000 (0xffe8dea6c0)
It crashed again:
panic: kernel diagnostic assertion "(pte & PG_G) == 0 || pm == pmap_kernel()" failed: file "/path/to/src/sys/arch/x86/x86/pmap_tlb.c", line 229
WARNING: SPL NOT LOWERED ON TRAP EXIT 7 0
cpu7: Begin traceback...
vpanic() at netbsd:vpanic+0x140
ch_voltag_convert_in() at netbsd:ch_voltag_convert_in
pmap_tlb_shootdown() at netbsd:pmap_tlb_shootdown+0x51
pmap_remove_pte() at netbsd:pmap_remove_pte+0x212
pmap_remove() at netbsd:pmap_remove+0x23d
uvm_unmap_remove() at netbsd:uvm_unmap_remove+0x207
uvmspace_free() at netbsd:uvmspace_free+0xe4
exit1() at netbsd:exit1+0x1a0
sigexit() at netbsd:sigexit+0x15a
sendsig() at netbsd:sendsig
lwp_userret() at netbsd:lwp_userret+0x1be
trap() at netbsd:trap+0x926
--- trap (number 3) ---
cpu7: End traceback...
dumping to dev 20,1 (offset=327, size=8272343):
dump device not ready
Alex
(Contact us)
$NetBSD: query-full-pr,v 1.43 2018/01/16 07:36:43 maya Exp $
$NetBSD: gnats_config.sh,v 1.9 2014/08/02 14:16:04 spz Exp $
Copyright © 1994-2017
The NetBSD Foundation, Inc. ALL RIGHTS RESERVED.