Hi,
linux 2.4.2 can be killed with multiple 'mount --bind ' -s.
The problem is reproduceable (at least on my system),
and works with User Mode Linux, too. Example script follows:
----
#!/bin/sh
OUTER=100
INNER=30
for j in `seq $OUTER`
do
for i in `seq $INNER`
do
echo "$j:$i"
touch $i $i.m
mount --bind $i $i.m
done
done
----
The system usually hangs in the third iteration of the
outer loop. No error messages, vt switching still works, network
connections hang.
(Yes, the script looks cruel, however I ran into this problem
with a (broken) real-life setup that closely resembles this script with
parameters OUTER=2 or 3 and INNER=19 )
The system is otherwise stable, no overclocking, etc...
System information: debian 2.2, with upgraded modutils, mount,
ppp, iptables; HW: AMD Athlon 550, MB: Asus K7V-RM, 128M RAM
Detailed stuff:
Kernel version:
Linux version 2.4.2 (root@tonhal) (gcc version 2.95.2 20000220 \
(Debian GNU/Linux)) #5 Mon Feb 26 22:13:40 CET 2001
----
output of scripts/ver_linux:
-- Versions installed: (if some fields are empty or look
-- unusual then possibly you have very old versions)
Linux tonhal 2.4.2 #5 Mon Feb 26 22:13:40 CET 2001 i686 unknown
Kernel modules 2.4.1
Gnu C 2.95.2
Gnu Make 3.79.1
Binutils 2.9.5.0.37
Linux C Library 2.1.3
Dynamic linker ldd: version 1.9.11
Procps 2.0.6
Mount 2.11a
Net-tools 2.05
Console-tools 0.2.3
Sh-utils 2.0
Modules Loaded ipt_state ipt_MASQUERADE iptable_filter \
ip_conntrack_ftp iptable_nat ip_conntrack ip_tables ppp_deflate \
bsd_comp ppp_async ppp_generic slhc via-rhine serial via82cxxx_audio \
ac97_codec soundcore w83781d sensors i2c-viapro i2c-core
----
Third party modules: lm_sensors-2.5.4, i2c-2.5.4
----
Basic cpu and pci information:
----
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 1
model name : AMD-K7(tm) Processor
stepping : 2
cpu MHz : 550.029
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat mmx
syscall mmxext 3dnowext 3dnow
bogomips : 1097.72
-----
00:00.0 Host bridge: VIA Technologies, Inc. VT82C691 [Apollo PRO] (rev 02)
00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3 AGP]
00:04.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super] (rev 22)
00:04.1 IDE interface: VIA Technologies, Inc. VT82C586 IDE [Apollo] (rev 10)
00:04.4 Host bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 30)
00:04.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686 [Apollo Super
AC97/Audio] (rev 20)
00:09.0 Ethernet controller: VIA Technologies, Inc.: Unknown device 3065 (rev 42)
01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev 04)
-----
I can give more information on request.
Regards:
Gabor
P.S.: gotta get better English :-)
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