When bitmap_fill(..., 0) is called, do not try to write anything. Before
this patch, it tried to write almost LONG_MAX, surely overwriting
something.
Signed-off-by: Marek Marczykowski-Górecki <marma...@invisiblethingslab.com>
Reviewed-by: Andrew Cooper <andrew.coop...@citrix.com>
Reviewed-by: Jan Beulich <jbeul...@suse.com>
---
xen/include/xen/bitmap.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/xen/include/xen/bitmap.h b/xen/include/xen/bitmap.h
index fe3c720..0430c1c 100644
--- a/xen/include/xen/bitmap.h
+++ b/xen/include/xen/bitmap.h
@@ -126,6 +126,8 @@ static inline void bitmap_fill(unsigned long *dst, int
nbits)
size_t nlongs = BITS_TO_LONGS(nbits);
switch (nlongs) {
+ case 0:
+ break;
default:
memset(dst, -1, (nlongs - 1) * sizeof(unsigned long));
/* fall through */
--
git-series 0.9.1
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