diff options
| author | Jim_Guo <jim_guo@htc.com> | 2014-04-28 11:11:57 +0800 |
|---|---|---|
| committer | Brian Carlstrom <bdc@google.com> | 2014-08-04 22:47:48 -0700 |
| commit | ac304133ab4b988777bcc5ad12257cbb99c3871e (patch) | |
| tree | 517e9912d8d202fb125a47b526ced9e5d399bcf5 /test/ProfileTestMultiDex | |
| parent | 27a10f618357cf85cc0677a04f0a5a3a8a437aed (diff) | |
ART: Fix memory unmapped twice issue in ElfFile::Load(bool)
Root Cause:
The overlapped memory region will be unmapped by
(1) ~MemMap() of reservation MemMap (reserve) and
(2) ~MemMap() of "reuse" MemMap (segment).
Someone takes the memory region after (1) and it will be unmapped in (2).
So, SIGSEGV occurs when using the unmapped memory region.
Solution:
Fixes this issue by skip unmap "reuse" MemMap in destructor.
And always create reservation MemMap before "reuse" MemMap. (It also solved
the fixupELF case which does not reserve the whole needed memory region).
Bug: 16486685
(cherry picked from commit a62a588a9202f69e53fbeb3045ea8ea5ec2587f8)
Change-Id: Icb83c8e87fa168027d9d8adb34925000399d3d2a
Diffstat (limited to 'test/ProfileTestMultiDex')
0 files changed, 0 insertions, 0 deletions