Date: Sat, 11 Mar 2006 11:40:53 GMT From: Martin <nakal@nurfuerspam.de> To: freebsd-threads@FreeBSD.org Subject: Re: threads/80435: panic on high loads Message-ID: <200603111140.k2BBerFh096411@freefall.freebsd.org>
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The following reply was made to PR threads/80435; it has been noted by GNATS.
From: Martin <nakal@nurfuerspam.de>
To: bug-followup@FreeBSD.org
Cc:
Subject: Re: threads/80435: panic on high loads
Date: Sat, 11 Mar 2006 12:36:04 +0100
Hi,
I've a similar panic. Not exactly the same, but in a similar
situation. You can trigger it with a slightly modified fork bomb:
#include <stdlib.h>
#include <unistd.h>
int main(void)
{
while(1) {
fork();
malloc(1024);
}
return 0;
}
The resulting panic is:
fault code = supervisor write, page not present
backtrace:
pmap_qenter()
vm_thread_new()
thread_init()
slab_zalloc()
uma_zone_slab()
uma_zalloc_bucket()
uma_zalloc_arg()
thread_alloc()
proc_init()
slab_zalloc()
uma_zone_slab()
uma_zalloc_bucket()
uma_zalloc_arg()
fork1()
fork()
syscall()
Xint0x80()
-- syscall (2, FreeBSD ELF32, fork)
Reproducible on: -STABLE
uname -a:
FreeBSD klotz.local 6.1-PRERELEASE FreeBSD 6.1-PRERELEASE #0: Mon Mar 6
00:21:54 CET 2006 root@klotz.local:/usr/obj/usr/src/sys/KLOTZ i386
--
Martin
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