Arch Linux

Description:

I saw this on the Red Hat bug tracker and reproduced on my Arch Linux installation. Bash is eating up memory when dealing with a special script.

The original bug report: https://bugzilla.redhat.com/show_bug.cgi?id=1245233

Additional info:

sijie@sijie-t900 ~ $ pacman -Q bash
bash 4.3.039-1

bash --version
GNU bash，版本 4.3.39(1)-release (x86_64-unknown-linux-gnu)

Steps to reproduce:

I simply followed the steps in the original Red Hat bug report.

sijie@sijie-t900 ~ $ cat loop.sh
#!/bin/bash
run() { local -a A=(); local -a A=(); }
while :; do run; done

sijie@sijie-t900 ~ $ cat test2.sh
#!/bin/bash
$(readlink /proc/$$/exe) loop.sh &
SHPID=$!
sleep 1
MEM=$(ps p $SHPID o "%z" | grep -v VSZ)
echo "memory consumption: $MEM"
sleep 15
MEM2=$(ps p $SHPID o "%z" | grep -v VSZ)
kill $SHPID
echo "memory consumption: $MEM2"
#compare memory consumption
[ $MEM -eq $MEM2 ]

sijie@sijie-t900 ~ $ ./test2.sh
memory consumption: 43244
memory consumption: 443468