Bug#72319: Empty Executable File Forces Hurd Reboot

[Brent Fulgham]

Package: hurd
Version: 20000803

If you perform the following steps, the Hurd will either crash
or reboot:

root@orson:~# touch test
root@orson:~# ls -l
total 0
-rw-r--r--    1 root     root            0 Sep 23 20:48 test
root@orson:~# chmod a+rx test
root@orson:~# ls -l
total 0
-rwxr-xr-x    1 root     root            0 Sep 23 20:48 test
root@orson:~# ./test

[ ... hang ... ]  (Or sometimes reboot).

Under Linux, the behavior is more benign:

bfulgham@hopper:~# touch test
bfulgham@hopper:~# ls -l test
-rw-r--r--    1 bfulgham bfulgham        0 Sep 23 21:56 test
bfulgham@hopper:~# chmod a+rx test
bfulgham@hopper:~# ls -l test
-rwxr-xr-x    1 bfulgham bfulgham        0 Sep 23 21:56 test
bfulgham@hopper:~# ./test
bfulgham@hopper:~# 

Hurd behavior should be modified to safely handle this condition.

Thanks!

-Brent