Commit 0e684b65 authored Feb 02, 2017 by Steven Rostedt (VMware)

tracing: Reset parser->buffer to allow multiple "puts"

trace_parser_put() simply frees the allocated parser buffer. But it does not
reset the pointer that was freed. This means that if trace_parser_put() is
called on the same parser more than once, it will corrupt the allocation
system. Setting parser->buffer to NULL after free allows it to be called
more than once without any ill effect.

Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

parent ae98d27a

kernel/trace/trace.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1193,6 +1193,7 @@ int trace_parser_get_init(struct trace_parser *parser, int size)
		void trace_parser_put(struct trace_parser *parser)
		{
		kfree(parser->buffer);
		parser->buffer = NULL;
		}

		/*