Tony Breeds
2005-Dec-13 05:54 UTC
[Xen-devel] [PATCH] Fix user direct access in grant_table.c
From: Rusty Russell <rusty@rustcorp.com.au>
Tony found a direct userspace access with his unit test for
grant_table.c. We access "uop->frame_list" (a pointer) directly,
rather
than using "op.frame_list".
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
diff -r aebe8f5c7069 xen/common/grant_table.c
--- a/xen/common/grant_table.c Mon Dec 12 18:45:53 2005
+++ b/xen/common/grant_table.c Tue Dec 13 15:23:23 2005
@@ -579,7 +579,7 @@
(void)put_user(GNTST_okay, &uop->status);
for ( i = 0; i < op.nr_frames; i++ )
(void)put_user(gnttab_shared_mfn(d, d->grant_table, i),
- &uop->frame_list[i]);
+ &op.frame_list[i]);
}
put_domain(d);
Yours Tony
linux.conf.au http://linux.conf.au/ || http://lca2006.linux.org.au/
Jan 23-28 2006 The Australian Linux Technical Conference!
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