The patch titled
lib/iommu-helper.c: fix off-by-one error in find_next_zero_area()
has been added to the -mm tree. Its filename is
lib-iommu-helperc-fix-off-by-one-error-in-find_next_zero_area.patch
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------------------------------------------------------
Subject: lib/iommu-helper.c: fix off-by-one error in find_next_zero_area()
From: Akinobu Mita <akinobu.mita@xxxxxxxxx>
My user space testing exposed off-by-one error find_next_zero_area in
iommu-helper. Some zero area cannot be found by this bug.
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Joerg Roedel <joerg.roedel@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
diff -puN lib/iommu-helper.c~lib-iommu-helperc-fix-off-by-one-error-in-find_next_zero_area lib/iommu-helper.c
--- a/lib/iommu-helper.c~lib-iommu-helperc-fix-off-by-one-error-in-find_next_zero_area
+++ a/lib/iommu-helper.c
@@ -19,7 +19,7 @@ again:
index = (index + align_mask) & ~align_mask;
end = index + nr;
- if (end >= size)
+ if (end > size)
return -1;
for (i = index; i < end; i++) {
if (test_bit(i, map)) {
_
Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are
lib-iommu-helperc-fix-off-by-one-error-in-find_next_zero_area.patch
iommu-helper-simplify-find_next_zero_area.patch
bitmap-introduce-bitmap_set-bitmap_clear-bitmap_find_next_zero_area.patch
iommu-helper-use-bitmap-library.patch
isp1362-hcd-use-bitmap_find_next_zero_area.patch
mlx4-use-bitmap_find_next_zero_area.patch
sparc-use-bitmap_find_next_zero_area.patch
ia64-use-bitmap_find_next_zero_area.patch
genalloc-use-bitmap_find_next_zero_area.patch
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