Date: Wed, 9 May 2001 12:27:33 +0800 From: "David Xu" <bsddiy@163.net> To: <freebsd-questions@freebsd.org> Cc: <freebsd-stable@freebsd.org> Subject: kenel panic, vm_map_entry_create: kernel resources exhausted Message-ID: <002f01c0d840$5ed38180$3601a8c0@xyf>
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I am using FreeBSD 4.3-STABLE, my machine has 64 RAM.
I can use a fork bomb to crash kernel under some conditions,
fork bomb program is:
#include <unistd.h>
int main()
{
while(1)
{
if (fork() == 0)
break;
}
return 0;
}
when kernel panic, it prints: vm_map_entry_create: kernel resources
exhausted,
then after some seconds, it reboots.
I have found that if I use GENERIC kernel config, I can not trigger this
bug,
default maxusers value in GENERIC kernel config file is 32, this is fine,
if I change it to 128 and recompile/install kernel, I can use the fork bomb
to
crash kernel. it seems this problem is RAM size and maxusers parameter
related. what max value of maxusers should I use if my RAM is 64M?
---
Regards,
David Xu
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