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  • Thomas Gleixner's avatar
    tracing: fix trace_find_cmdline() · 50d88758
    Thomas Gleixner authored
    Impact: prevent stale command line output
    In case there is no valid command line mapping for a pid
    trace_find_cmdline() returns without updating the comm buffer. The
    trace dump keeps the previous entry which results in confusing trace
         <idle>-0     [000]   280.702056 ....
         <idle>-23456 [000]   280.702080 ....
    Update the comm buffer with "<...>" when no mapping is found.
    Signed-off-by: default avatarThomas Gleixner <>
    Cc: Steven Rostedt <>
    Cc: Frederic Weisbecker <>
    LKML-Reference: <new-submission>
    Signed-off-by: default avatarIngo Molnar <>