Re: tracing: don't stuff stale pointers in filp->private_data

From: Steven Rostedt
Date: Sat Sep 21 2013 - 11:46:44 EST


Or make the assignment in an else block.

-- Steve


Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote:
>On Fri, Sep 20, 2013 at 12:47:32PM -0400, Dave Jones wrote:
>> Probably harmless, but still not a nice thing to do.
>>
>> Signed-off-by: Dave Jones <davej@xxxxxxxxxxxxxxxxx>
>>
>> diff --git a/kernel/trace/trace_events.c
>b/kernel/trace/trace_events.c
>> index 368a4d5..75d3556 100644
>> --- a/kernel/trace/trace_events.c
>> +++ b/kernel/trace/trace_events.c
>> @@ -1124,6 +1124,7 @@ static int system_tr_open(struct inode *inode,
>struct file *filp)
>> if (ret < 0) {
>> trace_array_put(tr);
>> kfree(dir);
>> + dir = NULL;
>> }
>>
>> filp->private_data = dir;
>
>Er... Why not simply return ret; instead?

--
Sent from my Android phone with K-9 Mail. Please excuse my brevity.
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