Bug#609389: libc-bin: getconf -a have many variables set not properly (i.e. LEVEL*CACHE*)
Package: libc-bin
Version: 2.11.2-7
Severity: normal
getconf -a have many variables set to 0.
for example
LEVEL1_ICACHE_SIZE 0
LEVEL1_ICACHE_ASSOC 0
LEVEL1_ICACHE_LINESIZE 0
LEVEL1_DCACHE_SIZE 0
LEVEL1_DCACHE_ASSOC 0
LEVEL1_DCACHE_LINESIZE 0
LEVEL2_CACHE_SIZE 0
LEVEL2_CACHE_ASSOC 0
LEVEL2_CACHE_LINESIZE 0
they are easly available on most architectures in /proc/cpuinfo
There are also few more, but I do not know if they apply to Linux system
(most notably some limits are not set, but i do not know if they correctly
do not have any limits, or somebody forget to set them somewhere).
They can lead to subtel bugs, for example involving buffer overflows.
My system:
# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 13
model name : Intel(R) Pentium(R) M processor 1.73GHz
stepping : 8
cpu MHz : 800.000
cache size : 2048 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx up bts est tm2
bogomips : 1596.20
clflush size : 64
cache_alignment : 64
address sizes : 32 bits physical, 32 bits virtual
power management:
# uname -a
Linux sredniczarny 2.6.37-rc8+ #68 SMP PREEMPT Thu Dec 30 04:03:38 CET 2010
i686 GNU/Linux
#
-- System Information:
Debian Release: 6.0
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.37-rc8+ (SMP w/1 CPU core; PREEMPT)
Locale: LANG=pl_PL.utf8, LC_CTYPE=pl_PL.utf8 (charmap=UTF-8) (ignored: LC_ALL set to pl_PL.utf8)
Shell: /bin/sh linked to /bin/dash
-- no debconf information
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