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Commit 5802294f authored by Steven Rostedt's avatar Steven Rostedt Committed by Ingo Molnar
Browse files

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: default avatarSteven Rostedt <srostedt@redhat.com>
Reviewed-by: default avatar"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent dd0078f4

kernel/rcupreempt_trace.c

+6 −1
Original line number Diff line number Diff line
@@ -308,11 +308,16 @@ out: 


static int __init rcupreempt_trace_init(void)

{

	int ret;



	mutex_init(&rcupreempt_trace_mutex);

	rcupreempt_trace_buf = kmalloc(RCUPREEMPT_TRACE_BUF_SIZE, GFP_KERNEL);

	if (!rcupreempt_trace_buf)

		return 1;

	return rcupreempt_debugfs_init();

	ret = rcupreempt_debugfs_init();

	if (ret)

		kfree(rcupreempt_trace_buf);

	return ret;

}



static void __exit rcupreempt_trace_cleanup(void)