• Steven Rostedt's avatar
    tracing: Warn on output if the function tracer was found corrupted · e0a413f6
    Steven Rostedt authored
    
    
    As the function tracer is very intrusive, lots of self checks are
    performed on the tracer and if something is found to be strange
    it will shut itself down keeping it from corrupting the rest of the
    kernel. This shutdown may still allow functions to be traced, as the
    tracing only stops new modifications from happening. Trying to stop
    the function tracer itself can cause more harm as it requires code
    modification.
    
    Although a WARN_ON() is executed, a user may not notice it. To help
    the user see that something isn't right with the tracing of the system
    a big warning is added to the output of the tracer that lets the user
    know that their data may be incomplete.
    Reported-by: default avatarThomas Gleixner <tglx@linutronix.de>
    Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
    e0a413f6