diff options
| author | Mohamed Khalfella <mkhalfella@purestorage.com> | 2023-07-14 20:33:41 +0000 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-07-23 11:18:52 -0400 |
| commit | 4b8b3905165ef98386a3c06f196c85d21292d029 (patch) | |
| tree | b933f374abed4c2110ea812439482240bc728703 /kernel/trace | |
| parent | 8a96c0288d0737ad77882024974c075345c72011 (diff) | |
tracing/histograms: Return an error if we fail to add histogram to hist_vars list
Commit 6018b585e8c6 ("tracing/histograms: Add histograms to hist_vars if
they have referenced variables") added a check to fail histogram creation
if save_hist_vars() failed to add histogram to hist_vars list. But the
commit failed to set ret to failed return code before jumping to
unregister histogram, fix it.
Link: https://lore.kernel.org/linux-trace-kernel/20230714203341.51396-1-mkhalfella@purestorage.com
Cc: stable@vger.kernel.org
Fixes: 6018b585e8c6 ("tracing/histograms: Add histograms to hist_vars if they have referenced variables")
Signed-off-by: Mohamed Khalfella <mkhalfella@purestorage.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace_events_hist.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index c8c61381eba4..d06938ae0717 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -6668,7 +6668,8 @@ static int event_hist_trigger_parse(struct event_command *cmd_ops, goto out_unreg; if (has_hist_vars(hist_data) || hist_data->n_var_refs) { - if (save_hist_vars(hist_data)) + ret = save_hist_vars(hist_data); + if (ret) goto out_unreg; } |