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| author | Xiaoke Wang <xkernel.wang@foxmail.com> | 2022-01-25 07:07:15 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-01 19:27:00 +0300 |
| commit | e33fa4a46ee22de88a700e2e3d033da8214a5175 (patch) | |
| tree | 6283a060f9a98f1b7e56488b3e6bc4b426a9c5af /kernel/trace | |
| parent | fb9b60bbda5536dd268dcf00ca38a1f241ebb28b (diff) | |
| download | linux-e33fa4a46ee22de88a700e2e3d033da8214a5175.tar.xz | |
tracing/histogram: Fix a potential memory leak for kstrdup()
commit e629e7b525a179e29d53463d992bdee759c950fb upstream.
kfree() is missing on an error path to free the memory allocated by
kstrdup():
p = param = kstrdup(data->params[i], GFP_KERNEL);
So it is better to free it via kfree(p).
Link: https://lkml.kernel.org/r/tencent_C52895FD37802832A3E5B272D05008866F0A@qq.com
Cc: stable@vger.kernel.org
Fixes: d380dcde9a07c ("tracing: Fix now invalid var_ref_vals assumption in trace action")
Signed-off-by: Xiaoke Wang <xkernel.wang@foxmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace_events_hist.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index 12a735bd90a5..83efce3a87ca 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -3581,6 +3581,7 @@ static int trace_action_create(struct hist_trigger_data *hist_data, var_ref_idx = find_var_ref_idx(hist_data, var_ref); if (WARN_ON(var_ref_idx < 0)) { + kfree(p); ret = var_ref_idx; goto err; } |