This revision seems to fix the bug, so I guess that simply upgrading the grub
package to latest version would solve this issue; but I even tried to simply
apply this patch, and it worked.
$ bzr diff -r2151..2152
=== modified file 'ChangeLog'
--- ChangeLog 2010-02-02 23:43:55 +0000
+++ ChangeLog 2010-02-02 23:46:55 +0000
@@ -1,3 +1,8 @@
+2010-02-03 Torsten Landschoff <tors...@debian.org>
+
+ * kern/disk.c (grub_disk_read): Fix offset computation when reading
+ last sectors.
+
2010-02-03 Vladimir Serbinenko <phco...@gmail.com>
* disk/i386/pc/biosdisk.c (grub_biosdisk_read): Handle non-2048
aligned
=== modified file 'kern/disk.c'
--- kern/disk.c 2010-01-27 16:30:03 +0000
+++ kern/disk.c 2010-02-02 23:46:55 +0000
@@ -441,7 +441,7 @@
grub_errno = GRUB_ERR_NONE;
- num = ((size + real_offset + pos + GRUB_DISK_SECTOR_SIZE - 1)
+ num = ((size + real_offset + GRUB_DISK_SECTOR_SIZE - 1)
>> GRUB_DISK_SECTOR_BITS);
p = grub_realloc (tmp_buf, num << GRUB_DISK_SECTOR_BITS);
@@ -458,7 +458,7 @@
goto finish;
}
- grub_memcpy (buf, tmp_buf + pos + real_offset, size);
+ grub_memcpy (buf, tmp_buf + real_offset, size);
/* Call the read hook, if any. */
if (disk->read_hook)
--
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