aboutsummaryrefslogtreecommitdiffstats
path: root/kernel
diff options
context:
space:
mode:
authorSteven Rostedt <rostedt@goodmis.org>2008-07-30 14:20:55 -0400
committerIngo Molnar <mingo@elte.hu>2008-08-15 11:54:40 -0400
commit5802294f1b1895ee19a3d0ae72805da453afb9de (patch)
treec6a09592897a8b9e0c6abf3a80070a8abb614744 /kernel
parentdd0078f4f04d939950a792c493d7d97d7ce663b8 (diff)
rcu: trace fix possible mem-leak
In the initialization of the RCU trace module, if rcupreempt_debugfs_init() fails, we never free the the trace buffer. This patch frees the trace buffer in case the debugfs fails. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Reviewed-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/rcupreempt_trace.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/rcupreempt_trace.c b/kernel/rcupreempt_trace.c
index 5edf82c34bbc..35c2d3360ecf 100644
--- a/kernel/rcupreempt_trace.c
+++ b/kernel/rcupreempt_trace.c
@@ -308,11 +308,16 @@ out:
308 308
309static int __init rcupreempt_trace_init(void) 309static int __init rcupreempt_trace_init(void)
310{ 310{
311 int ret;
312
311 mutex_init(&rcupreempt_trace_mutex); 313 mutex_init(&rcupreempt_trace_mutex);
312 rcupreempt_trace_buf = kmalloc(RCUPREEMPT_TRACE_BUF_SIZE, GFP_KERNEL); 314 rcupreempt_trace_buf = kmalloc(RCUPREEMPT_TRACE_BUF_SIZE, GFP_KERNEL);
313 if (!rcupreempt_trace_buf) 315 if (!rcupreempt_trace_buf)
314 return 1; 316 return 1;
315 return rcupreempt_debugfs_init(); 317 ret = rcupreempt_debugfs_init();
318 if (ret)
319 kfree(rcupreempt_trace_buf);
320 return ret;
316} 321}
317 322
318static void __exit rcupreempt_trace_cleanup(void) 323static void __exit rcupreempt_trace_cleanup(void)