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[2607:f720:1300:3033::1:4dd]) by smtp.googlemail.com with ESMTPSA id z18-20020aa79912000000b005484d133127sm6213790pff.129.2022.09.16.19.04.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Sep 2022 19:04:15 -0700 (PDT) From: Li Zhong To: linux-kernel@vger.kernel.org Cc: mingo@redhat.com, rostedt@goodmis.org, Li Zhong Subject: [PATCH v1] kernel/trace/trace: check the return value of tracing_update_buffers() Date: Fri, 16 Sep 2022 19:03:53 -0700 Message-Id: <20220917020353.3836285-1-floridsleeves@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Check the return value of tracing_update_buffers() in case it fails. Signed-off-by: Li Zhong --- 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 d3005279165d..0e367e326147 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -3305,7 +3305,8 @@ void trace_printk_init_buffers(void) pr_warn("**********************************************************\n"); /* Expand the buffers to set size */ - tracing_update_buffers(); + if (tracing_update_buffers() < 0) + return; buffers_allocated = 1; -- 2.25.1