[PATCH]segmentation fault in xfs_io mwrite command #2

[Utako Kusaka <utako@xxxxxxxxxxxxxx>]

Hi,

My previous patch is not enough.
If mmap offset is not 0, segmentation fault occurs in mwrite.
This patch fixes it.

Example:
# xfs_io -f file7 -c "mmap 4096 4096" -c "mwrite"
Segmentation fault

Signed-off-by: Utako Kusaka <utako@xxxxxxxxxxxxxx>
---

--- xfsprogs-2.8.18-orgn/io/mmap.c      2006-12-13 13:57:22.000000000 +0900
+++ xfsprogs-2.8.18/io/mmap.c   2007-01-19 16:29:44.000000000 +0900
@@ -562,6 +562,7 @@ mwrite_f(
        if (!start)
                return 0;

+       offset -= mapping->offset;
        if (rflag) {
                for (tmp = offset + length -1; tmp >= offset; tmp--)
                        ((char *)mapping->addr)[tmp] = seed;