From nobody Fri Apr 3 02:23:01 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 793A2ECAAD8 for ; Sat, 17 Sep 2022 02:04:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229688AbiIQCE2 (ORCPT ); Fri, 16 Sep 2022 22:04:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40236 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229732AbiIQCEV (ORCPT ); Fri, 16 Sep 2022 22:04:21 -0400 Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E42C4BD118 for ; Fri, 16 Sep 2022 19:04:16 -0700 (PDT) Received: by mail-pj1-x1029.google.com with SMTP id m10-20020a17090a730a00b001fa986fd8eeso1480516pjk.0 for ; Fri, 16 Sep 2022 19:04:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date; bh=O+FIio6F6Ys8FBmVz4T0afCK9bRS+Qa/vDTw2yhOvu8=; b=HvqeBkQZ12yau4o1p4emYOFo9Wtma4Gh0/I52ysNYy9+x1M+bIiH93n0rUzaJa7k97 Rcxjmwtg2JMY5nfB9GvR6LkWBvZeDf6v0spq+ka0rycytEVp/Tk8GJu1pTU00zlh6/W+ 0oLM5W8odWAOWMnaVI6xq+6Lnpw0qZC3Um5kdCVLrZdj+uiioawhbCpJ0p+LvGYdrwDf xxlPQFjKK7sMhwiso6M/Oly2AY+KhZKKd3yF6GEO6phegsrODuBiG1w0yNexRyThQvht e9WASIqxxE6lkY0qlIhd11pL6Jn0pUU7B5hbv5aKnX1DQ5dp5mKQzAynxGXodrJ6RbZm 51Iw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date; bh=O+FIio6F6Ys8FBmVz4T0afCK9bRS+Qa/vDTw2yhOvu8=; b=TgMUNK13dzxGjxDG6QHLdOlD8rpwp5TXT6+WY75AR18ifnr+sFa9MUSJAiZesY3Zil HwQyC8SNhTOvYUMT8p6JMBeUylFTGlZB/GMfvC0zBLBvN2rZ4/DIZt+XsnBEmcVgdXEl Fmc+5hJYf0VIWi2oxOn0hTnvqZpKaXPJaCTHgRwvph8qhfnTPBKTOnS3y4+dykbPJRC1 vqeprjcmMje9WbSJfH7/z2oQNhZxTwrTvFeXyVX1Pxf4Qf0vQGW+bTHydGqljB1azoRZ 110Riz42TS5kaq2U/v/Mq9jP+IFg7iG0Hv+Lu5tNKcgV2jn4XSxjmjhz2sZDLOU3fDq4 T5Sw== X-Gm-Message-State: ACrzQf1lLkKnbCsNFTz1veElme7REuYP4UwN9pirYrkvzgfnoWsKdfZf 0JzRN4i8WyOOKCrL1YE6+q1WVUUG88HpzA== X-Google-Smtp-Source: AMsMyM5M9UUbdU/XWMWjAm8z/fw7jvFZK2GacApIMM2guNdlt51nfjbT6DN5S+eWMulnGRCtxGayzA== X-Received: by 2002:a17:902:f548:b0:178:44b:4ea9 with SMTP id h8-20020a170902f54800b00178044b4ea9mr2616760plf.77.1663380255845; Fri, 16 Sep 2022 19:04:15 -0700 (PDT) Received: from localhost.localdomain (lily-optiplex-3070.dynamic.ucsd.edu. [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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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"); =20 /* Expand the buffers to set size */ - tracing_update_buffers(); + if (tracing_update_buffers() < 0) + return; =20 buffers_allocated =3D 1; =20 --=20 2.25.1