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authorJian J Wang <jian.j.wang@intel.com>2018-10-24 06:28:32 +0300
committerJian J Wang <jian.j.wang@intel.com>2018-10-26 05:30:34 +0300
commitbb685071c2602cf786ea84c69bbebf2158194a38 (patch)
tree092a1c2345f1bab1ea166641adbd9aea159c0175 /BaseTools/Source/Python/Common/VpdInfoFile.py
parent54efcfea8120d9a0595d0db6cd5c1dddd8dd61e1 (diff)
downloadedk2-bb685071c2602cf786ea84c69bbebf2158194a38.tar.xz
MdeModulePkg/Core: prevent re-acquire GCD memory lock
This issue is hidden in current code but exposed by introduction of freed-memory guard feature due to the fact that the feature will turn all pool allocation to page allocation. The solution is moving the memory allocation in CoreGetMemorySpaceMap() to be out of the GCD memory map lock. CoreDumpGcdMemorySpaceMap() => CoreGetMemorySpaceMap() => CoreAcquireGcdMemoryLock () * AllocatePool() => InternalAllocatePool() => CoreAllocatePool() => CoreAllocatePoolI() => CoreAllocatePoolPagesI() => CoreAllocatePoolPages() => FindFreePages() => PromoteMemoryResource() => CoreAcquireGcdMemoryLock() ** Cc: Star Zeng <star.zeng@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Ruiyu Ni <ruiyu.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jian J Wang <jian.j.wang@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>
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