linux-kernel - [PATCH 4/7] tracing: Don't inc err_log entry count if entry allocation fails

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Date:   Thu, 27 Jan 2022 15:44:18 -0600
From:   Tom Zanussi <zanussi@...nel.org>
To:     rostedt@...dmis.org
Cc:     mhiramat@...nel.org, linux-kernel@...r.kernel.org,
        Tom Zanussi <zanussi@...nel.org>
Subject: [PATCH 4/7] tracing: Don't inc err_log entry count if entry allocation fails

tr->n_err_log_entries should only be increased if entry allocation
succeeds.

Doing it when it fails won't cause any problems other than wasting an
entry, but should be fixed anyway.

Signed-off-by: Tom Zanussi <zanussi@...nel.org>
---
 kernel/trace/trace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index a73d78dcda2c..addd8297874e 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -7740,7 +7740,8 @@ static struct tracing_log_err *get_tracing_log_err(struct trace_array *tr)
 		err = kzalloc(sizeof(*err), GFP_KERNEL);
 		if (!err)
 			err = ERR_PTR(-ENOMEM);
-		tr->n_err_log_entries++;
+		else
+			tr->n_err_log_entries++;
 
 		return err;
 	}
-- 
2.17.1