Date: Wed, 30 Oct 2002 02:40:36 -0800 (PST) From: "Łukasz Gryglicki" <morgothdbma@o2.pl> To: freebsd-gnats-submit@FreeBSD.org Subject: i386/44745: Program written in C++ can hang system (started by normal non-root user!) Message-ID: <200210301040.g9UAealj071656@www.freebsd.org>
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>Number: 44745
>Category: i386
>Synopsis: Program written in C++ can hang system (started by normal non-root user!)
>Confidential: no
>Severity: serious
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Oct 30 02:50:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator: Łukasz Gryglicki
>Release: FreeBSD Release v4.5
>Organization:
student
>Environment:
FreeBSD RELEASE 4.5 i386 /usr/src/sys/compile/MORGOTH etc.. (gcc 2.95)
Sorry but I'm using NT-Shit (2000) by now!
>Description:
My program (memory allocator) can hang system when tries to allocate more than RAM + SWAP memory. I think kernel should kill it! For example I've go 192MB ram & 700MB swap when I call alloc_bsd 1200MB, it hungs my system even I'm doing it as normal user UID=500. If You are intrested of this problem I can sent full source_code
>How-To-Repeat:
SOURCE_CODE alloc_bsd.c
>Fix:
Fix kernel memory management (this program does not allocate all 1200MB
at a time, because kernel kill it, but allocates 1MB and again, again, again)
I got message: swap_pagger get_free_block failed or something like this
and system hanged up)
:-(
>Release-Note:
>Audit-Trail:
>Unformatted:
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