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[Qemu-devel] [PATCH] exec: Skip mru section if it's a partial page and n
From: |
BALATON Zoltan |
Subject: |
[Qemu-devel] [PATCH] exec: Skip mru section if it's a partial page and not resolving subpage |
Date: |
Tue, 14 Nov 2017 23:42:35 +0100 |
This fixes a crash caused by picking the wrong memory region in
address_space_lookup_region seen with client code accessing a device
model that uses alias memory regions.
Signed-off-by: BALATON Zoltan <address@hidden>
---
exec.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/exec.c b/exec.c
index 97a24a8..e5f2b9a 100644
--- a/exec.c
+++ b/exec.c
@@ -413,6 +413,7 @@ static MemoryRegionSection
*address_space_lookup_region(AddressSpaceDispatch *d,
bool update;
if (section && section != &d->map.sections[PHYS_SECTION_UNASSIGNED] &&
+ (resolve_subpage || !section->offset_within_region) &&
section_covers_addr(section, addr)) {
update = false;
} else {
--
2.7.6
- [Qemu-devel] [PATCH] exec: Skip mru section if it's a partial page and not resolving subpage,
BALATON Zoltan <=