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two bugs in configfile parser
From: |
Patrick Georgi |
Subject: |
two bugs in configfile parser |
Date: |
Fri, 01 Aug 2008 01:44:53 +0200 |
User-agent: |
Thunderbird 2.0.0.16 (Windows/20080708) |
Hi,
given the following grub.cfg (simplified test case):
menuentry "test" {
if test "a" = "a" ; then
echo foo
fi
}
I have some issues. To reproduce, load grub with that file, enter the
editor on the menu item, run it with ctrl-x.
Two things can happen (I have some local patches which lead to one
happening slightly more often than the other, so it seems to be quite
sensitive to $whatever):
1. it crashes on malloc magic problems. It seems to be related to the
leading spaces on "echo foo". If I remove them, it works. I guess,
they're skipped at some place, and after that, the string should be
grub_free()d. grub's mm doesn't support that.
2. it corrupts the text once it finishes. After removing the leading
spaces, it runs correctly and returns to the editor. Unfortunately,
starting with " echo foo", the text is corrupted. Another run (with all
those garbage strings) ends in malloc magic error.
That code runs fine if executed directly from the menu.
Regards,
Patrick Georgi
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