The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 19, 2021
Filed:
Feb. 02, 2018
Huawei Technologies Co., Ltd., Shenzhen, CN;
Yutao Liu, Shanghai, CN;
Haibo Chen, Shanghai, CN;
Peitao Shi, Shanghai, CN;
Xinran Wang, Shanghai, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A computer processing node is described that is configured to perform a control flow integrity (CFI) method on a protected process operating on the processing node. The CFI method includes intercepting a system call originating from execution of the protected process executing in the runtime environment. A fast path operating within a kernel of the computer system accesses, from a kernel memory, a processor trace packet corresponding to the system call. The fast path attempts to establish a match between the processor trace packet and a program control flow (edge) entry within a credit-labeled control flow graph (CFG) definition having an associated credit value. The credit value represents a degree to which the program control flow is credible. Thereafter, the method further includes invoking, after the matching, a slow path for further processing of the processor trace packet if the associated credit value does not meet a specified threshold, and otherwise provide an indication to permit execution of the system call.