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| author | Matt Fleming <matthew.fleming@imgtec.com> | 2009-09-28 11:43:01 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-10-01 02:19:24 -0400 |
| commit | 33974093c024f08caadd2fc71a83bd811ed1831d (patch) | |
| tree | 412ce703796e403697ea00a0d29296b21068f4b0 /kernel/trace/kmemtrace.c | |
| parent | 84d88d5d4efc37dfb8a93a4a58d8a227ee86ffa4 (diff) | |
tracing: Fix infinite recursion in ftrace_update_pid_func()
When CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST is enabled
__ftrace_trace_function contains the current trace function, not
ftrace_trace_function.
In ftrace_update_pid_func() we currently incorrectly assign the
value of ftrace_trace_function to __ftrace_trace_funcion before
returning.
Without this patch it is possible to execute an infinite recursion
whereby ftrace_test_stop_func() calls __ftrace_trace_function,
which was assigned ftrace_test_stop_func() in
ftrace_update_pid_func().
Signed-off-by: Matt Fleming <matthew.fleming@imgtec.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <1254152581-18347-1-git-send-email-matt@console-pimps.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/kmemtrace.c')
0 files changed, 0 insertions, 0 deletions