Patents by Inventor Soren Sandmann Pedersen

Soren Sandmann Pedersen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Generating stack traces of call stacks that lack frame pointers
    Patent number: 8732671
    Abstract: A processing device executing an application analyzer analyzes a call stack having a plurality of stack frames to identify potential return addresses for the plurality of stack frames. The processing device records a value of each of the potential return addresses and records a location on the call stack for each of the potential return addresses. The processing device then determines which of the potential return addresses are actual return addresses based on debugging information and the recorded locations of the potential return addresses. The processing device generates a stack trace based on the actual return addresses.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: May 20, 2014
    Assignee: Red Hat, Inc.
    Inventor: Søren Sandmann Pedersen
  • Heuristic backtracer
    Patent number: 8566797
    Abstract: A heuristic backtracer is described. In one embodiment, a scanner scans a stack of an application for a pointer to a word of a machine code of the application. A preceding byte locator identifies one or more bytes immediately preceding the pointed-to machine code. A parser parses the one or more bytes immediately preceding the pointed-to machine code of the machine code for a call instruction. A return address identifier determines the pointed-to as a return address when the one or more bytes constitute the call instruction.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: October 22, 2013
    Assignee: Red Hat, Inc.
    Inventor: Soren Sandmann Pedersen
  • GENERATING STACK TRACES OF CALL STACKS THAT LACK FRAME POINTERS
    Publication number: 20110214109
    Abstract: A processing device executing an application analyzer analyzes a call stack having a plurality of stack frames to identify potential return addresses for the plurality of stack frames. The processing device records a value of each of the potential return addresses and records a location on the call stack for each of the potential return addresses. The processing device then determines which of the potential return addresses are actual return addresses based on debugging information and the recorded locations of the potential return addresses. The processing device generates a stack trace based on the actual return addresses.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 1, 2011
    Inventor: Søren Sandmann Pedersen
  • Heuristic backtracer
    Publication number: 20090217006
    Abstract: A heuristic backtracer is described. In one embodiment, a scanner scans a stack of an application for a pointer to a word of a machine code of the application. A preceding byte locator identifies one or more bytes immediately preceding the pointed-to machine code. A parser parses the one or more bytes immediately preceding the pointed-to machine code of the machine code for a call instruction. A return address identifier determines the pointed-to as a return address when the one or more bytes constitute the call instruction.
    Type: Application
    Filed: February 27, 2008
    Publication date: August 27, 2009
    Inventor: Soren Sandmann Pedersen