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avoid Linux 2.2.x memory range check bug.

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okuji 2001-03-16 09:10:44 +00:00
parent c2e925be16
commit c610524eb0
4 changed files with 12 additions and 3 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2001-03-16 OKUJI Yoshinori <okuji@gnu.org>
From Bodo Rueskamp <br@itchigo.com>:
* stage2/boot.c (load_initrd): Avoid the last 64kb for
Linux 2.2.x bug.
2001-03-03 OKUJI Yoshinori <okuji@gnu.org> 2001-03-03 OKUJI Yoshinori <okuji@gnu.org>
* docs/multiboot.texi (History): Written. * docs/multiboot.texi (History): Written.

1
THANKS
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@ -10,6 +10,7 @@ Alessandro Rubini <rubini@gnu.org>
Alexander K. Hudek <alexhudek@home.com> Alexander K. Hudek <alexhudek@home.com>
Andrew Clausen <clausen@gnu.org> Andrew Clausen <clausen@gnu.org>
Bernhard Treutwein <Bernhard.Treutwein@Verwaltung.Uni-Muenchen.DE> Bernhard Treutwein <Bernhard.Treutwein@Verwaltung.Uni-Muenchen.DE>
Bodo Rueskamp <br@itchigo.com>.
Bradford Hovinen <hovinen@redrose.net> Bradford Hovinen <hovinen@redrose.net>
Brian Brunswick <brian@skarpsey.demon.co.uk> Brian Brunswick <brian@skarpsey.demon.co.uk>
Bryan Ford <baford@cs.utah.edu> Bryan Ford <baford@cs.utah.edu>

2
docs/grub.8
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@ -1,5 +1,5 @@
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.23. .\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.23.
.TH GRUB "8" "February 2001" "grub (GNU GRUB 0.5.97)" FSF .TH GRUB "8" "March 2001" "grub (GNU GRUB 0.5.97)" FSF
.SH NAME .SH NAME
grub \- the grub shell grub \- the grub shell
.SH SYNOPSIS .SH SYNOPSIS

6
stage2/boot.c
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@ -632,8 +632,10 @@ load_initrd (char *initrd)
moveto = (LINUX_INITRD_MAX_ADDRESS - len) & 0xfffff000; moveto = (LINUX_INITRD_MAX_ADDRESS - len) & 0xfffff000;
/* XXX: Linux 2.3.xx has a bug in the memory range check, so avoid /* XXX: Linux 2.3.xx has a bug in the memory range check, so avoid
the last page. */ the last page.
moveto -= 0x1000; XXX: Linux 2.2.xx has a bug in the memory range check, which is
worse than that of Linux 2.3.xx, so avoid the last 64kb. *sigh* */
moveto -= 0x10000;
memmove ((void *) RAW_ADDR (moveto), (void *) cur_addr, len); memmove ((void *) RAW_ADDR (moveto), (void *) cur_addr, len);
printf (" [Linux-initrd @ 0x%x, 0x%x bytes]\n", moveto, len); printf (" [Linux-initrd @ 0x%x, 0x%x bytes]\n", moveto, len);