Xen devel - Aug 2007 - [PATCH] libfsimage: FAT: Fix unaligned access

Hi,

Using pygrub on IA64, the following messages output:

pygrub(5742): unaligned access to 0x600000000013515c, ip=0x2000000003b721f0
pygrub(5742): unaligned access to 0x600000000013515e, ip=0x2000000003b721f0
pygrub(5742): unaligned access to 0x6000000000135162, ip=0x2000000003b721f0
pygrub(5742): unaligned access to 0x6000000000135164, ip=0x2000000003b721f0
pygrub(5742): unaligned access to 0x6000000000135166, ip=0x2000000003b721f0

The ip indicates this line of tools/libfsimage/fat/fsys_fat.c:231:
  next_cluster = * (unsigned long *) (FAT_BUF + (cached_pos >> 1));
If the partition is FAT16, this access causes an unaligned access.
This patch fixes it.

Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Signed-off-by: KUWAMURA Shin''ya <kuwa@jp.fujitsu.com>

Best Regards,
-- 
  KUWAMURA Shin''ya


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