tracing/fastboot: fix len of func buffer

Impact: fix possible stack overrun

This is a port of a patch included in the mainline (KSYM_SYMBOL_LEN fixes).
The current func len is not large enough to contain the max symbol len, the
right size must be KSYM_SYMBOL_LEN.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/include/trace/boot.h b/include/trace/boot.h
index 6b54537..3ec58b4 100644 (file)
--- a/include/trace/boot.h
+++ b/include/trace/boot.h
@@ -9,7 +9,7 @@
  */
 struct boot_trace_call {
        pid_t                   caller;
-       char                    func[KSYM_NAME_LEN];
+       char                    func[KSYM_SYMBOL_LEN];
 };
 
 /*
@@ -17,7 +17,7 @@ struct boot_trace_call {
  * while it returns.
  */
 struct boot_trace_ret {
-       char                    func[KSYM_NAME_LEN];
+       char                    func[KSYM_SYMBOL_LEN];
        int                             result;
        unsigned long long      duration;               /* nsecs */
 };