commit b75228ccc3747305f7814333bbb24f1661d52644
Author: Jan Beulich <
[hidden email]>
AuthorDate: Fri Sep 14 13:22:34 2018 +0200
Commit: Jan Beulich <
[hidden email]>
CommitDate: Fri Sep 14 13:22:34 2018 +0200
rangeset: make inquiry functions tolerate NULL inputs
Rather than special casing the ->iomem_caps check in x86's
get_page_from_l1e() for the dom_xen case, let's be more tolerant in
general, along the lines of rangeset_is_empty(): A never allocated
rangeset can't possibly contain or overlap any range.
Reported-by: Andrew Cooper <
[hidden email]>
Signed-off-by: Jan Beulich <
[hidden email]>
Reviewed-by: Roger Pau Monné <
[hidden email]>
Reviewed-by: Wei Liu <
[hidden email]>
master commit: ad0a9f273d6d6f0545cd9b708b2d4be581a6cadd
master date: 2018-08-17 13:54:40 +0200
---
xen/common/rangeset.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/xen/common/rangeset.c b/xen/common/rangeset.c
index ade34f6a50..f57ec5fdb8 100644
--- a/xen/common/rangeset.c
+++ b/xen/common/rangeset.c
@@ -256,6 +256,9 @@ bool_t rangeset_contains_range(
ASSERT(s <= e);
+ if ( !r )
+ return false;
+
read_lock(&r->lock);
x = find_range(r, s);
contains = (x && (x->e >= e));
@@ -272,6 +275,9 @@ bool_t rangeset_overlaps_range(
ASSERT(s <= e);
+ if ( !r )
+ return false;
+
read_lock(&r->lock);
x = find_range(r, e);
overlaps = (x && (s <= x->e));
--
generated by git-patchbot for /home/xen/git/xen.git#staging-4.10
_______________________________________________
Xen-changelog mailing list
[hidden email]
https://lists.xenproject.org/xen-changelog
Locked
