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由 Steven Rostedt (VMware) 提交于
commit 9ef16693 upstream. The ftrace set_ftrace_filter and set_ftrace_notrace files are specific for an instance now. They need to take a reference to the instance otherwise there could be a race between accessing the files and deleting the instance. It wasn't until the :mod: caching where these file operations started referencing the trace_array directly. Cc: stable@vger.kernel.org Fixes: 673feb9d ("ftrace: Add :mod: caching infrastructure to trace_array") Signed-off-by: NSteven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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