Bug#318244: segmentation fault with many files

[Tuukka Toivonen <tuukkat@ee.oulu.fi>]

On Fri, 29 Jul 2005, GOTO Masanori wrote:

>Manoj Srivastava wrote:
>>  could  be something that libc was not prepared for (memory
>>  exhausted?). 

Now that you mentioned it, some memory information:

> free
             total       used       free     shared    buffers     cached
Mem:        516520     456300      60220          0     142988      49504
-/+ buffers/cache:     263808     252712
Swap:      1004052     173664     830388

> ulimit -a
core file size        (blocks, -c) 0
data seg size         (kbytes, -d) unlimited
file size             (blocks, -f) unlimited
max locked memory     (kbytes, -l) unlimited
max memory size       (kbytes, -m) unlimited
open files                    (-n) 1024
pipe size          (512 bytes, -p) 8
stack size            (kbytes, -s) 8192
cpu time             (seconds, -t) unlimited
max user processes            (-u) unlimited
virtual memory        (kbytes, -v) unlimited

>Tuukka, is it easy to reappear this problem again?

Yes, it is easy to reproduce with the following script: create a new empty 
directory and run the script in it:

#!/bin/bash

#FILES=130000 No crash
#FILES=140000 Crash

# This script crashes with the following message:

#> ./go.sh 
#./go.sh: line 22: 21020 Segmentation fault      make clean

FILES=140000

cat >Makefile <<EOF

config.h: \$(wildcard */xxxx)
	echo hmm

EOF

j=0
while [ $j -lt $FILES ]; do
	touch xx-$j
	j=$(($j+1))
done

make clean