Bugs item #1672286, was opened at 2007-03-02 10:50
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: cinap_lenrek (cinap_lenrek)
Assigned to: Nobody/Anonymous (nobody)
Summary: process creation randomly fails in plan9
Initial Comment:
the following code produces random segfaults in the created process unter
kvm-12. works with -no-kvm option.
---
#include <u.h>
#include <libc.h>
#include <thread.h>
void emptyproc(void *)
{
}
void threadmain(int agrc, char **argv)
{
int i;
for(i=0; i<10000; i++){
proccreate(emptyproc, nil, 1024);
}
}
---
cpu% ./test
test 7531: suicide: sys: trap: fault write addr=0xe80424b3 pc=0x00001d6d
test 7907: suicide: sys: trap: fault write addr=0x3 pc=0x000014db
the pc and addr values are completly bogus and seem to be random.
the guest is a netbooted plan9 cpu-kernel. i can test it with some other
official plan9 image if you want.
host is:
[EMAIL PROTECTED]:~# uname -a
Linux excel.9hal 2.6.20.1 #8 SMP PREEMPT Wed Feb 28 20:34:11 CET 2007 i686
GNU/Linux
r
[EMAIL PROTECTED]:~# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 6
model name : Intel(R) Pentium(R) D CPU 3.00GHz
stepping : 2
cpu MHz : 3000.399
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni
monitor ds_cpl vmx cid cx16 xtpr lahf_lm
bogomips : 6005.68
clflush size : 64
processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 6
model name : Intel(R) Pentium(R) D CPU 3.00GHz
stepping : 2
cpu MHz : 3000.399
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni
monitor ds_cpl vmx cid cx16 xtpr lahf_lm
bogomips : 6000.75
c
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