NetBSD Problem Report #40811

From root@kefren.netbsd.ro  Sat Feb 28 19:26:06 2009
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Date: Sat, 28 Feb 2009 21:26:03 +0200 (EET)
From: kefren@ngnetworks.ro
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To: gnats-bugs@gnats.NetBSD.org
Subject: crash under disk load
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>Number:         40811
>Category:       kern
>Synopsis:       crash under disk load
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Feb 28 19:30:00 +0000 2009
>Originator:     Mihai Chelaru
>Release:        NetBSD 5.99.7
>Organization:

>Environment:


System: NetBSD kefren.netbsd.ro 5.99.7 NetBSD 5.99.7 (Home) #16: Sat Feb 28 19:42:18 EET 2009 root@kefren.netbsd.ro:/disk2/work/src/sys/arch/amd64/compile/obj/Home amd64
Architecture: x86_64
Machine: amd64
>Description:

	Under disk load system become sensitively slow (even mouse is moving in steps) and finally crashes after two-three seconds.
	Traceback looks always the same, the following one being generated by an install in pkgsrc with PKG_DEVELOPER set. While "Generating pre-install file lists" I saw a message that was saying there are too many temporary files. After that panic:

uvm_fault(0xffffffff80900580,0xffff80004fc87000,2) -> e
fatal page fault in supervisor mode
trap type 6 code 2 rip ffffffff805c3393 cs 8 rflags 10206 cr2 ffff80004fc87810 cpl 0 rsp ffff80004fba27d8
kernel: page fault trap, code = 0
Stopped in pid 127.1 (syslogd) at     netbsd: memset+67:     repe stosq
%
es:(%rdi)
18446603337508151296

Traceback:

memset+67
ffs_truncate+3062
ffs_write+2444
VOP_WRITE+102
vn_write+206
dofilewrite+129
sys_write+114
syscall+182

>How-To-Repeat:

>Fix:


>Unformatted:

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