From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04A8BC433E0 for ; Thu, 4 Jun 2020 10:01:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D841C206DC for ; Thu, 4 Jun 2020 10:01:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="IGSSRmtm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728416AbgFDKBy (ORCPT ); Thu, 4 Jun 2020 06:01:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726411AbgFDKBx (ORCPT ); Thu, 4 Jun 2020 06:01:53 -0400 Received: from mail-pl1-x641.google.com (mail-pl1-x641.google.com [IPv6:2607:f8b0:4864:20::641]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 57ECBC03E96D for ; Thu, 4 Jun 2020 03:01:52 -0700 (PDT) Received: by mail-pl1-x641.google.com with SMTP id q16so2010744plr.2 for ; Thu, 04 Jun 2020 03:01:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=lmlB+pXtYmTxvOHVpxLinB7XLVQiN2it0eFpYDWFPp8=; b=IGSSRmtmpdky3rgwegSDEySfjuUJ2LVkZV2xvh9aO93mhqax8N8nuxhwVcjz0b/Gcj UIcAq42et3lewAn4TsiQ7+VifsxhjDGyyqPtVs5/a5XOE0WT+Bp1Pdg0AwHtH4LHE2MA 6A2XNP2cgCaD73tESkCFaRfbF2IKmT9+QPQoH08drKD7PnzolRphdcvNbhybGzCipgIi yEA0I+tF7hRDBLwdKCBP3FDWVwDY2v5KqyF9F4d0EO44R7kc8AmsR003b0E1dN8ddppR 8kCKr6SVXDDA2wMx/zghCP+uhvJZRsB0XeLQ7wyMMLdMoWQ7/mkWn8ul6E2sdKxPgklT n7fw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=lmlB+pXtYmTxvOHVpxLinB7XLVQiN2it0eFpYDWFPp8=; b=Rp7BPNTDohDOqaK7DeToQub/kFUmizUyYksWVSZMjKPXf+c4DsLKrYqxmvPXj9Foqh 8pdv7Ts1enN7TQGb9jL2FzG9GKKUFIoep9UxeCbyIFIBCwI88L2iTuEn2Oe+jYjKaNF4 4IHE5d5/HBu0LdNQenS3YZoQC0QF9E46yYiIfsmXmOjJU0QRReYCrSmDEB73NI5593R1 UXVT7Nyy8lTGO/l0qqhucCL0OqupHdrvOuF7K6PfaNS+ikCUvLf6bATrfpodDdK0MSse zJhBxZlzE2eHwWiEpwDYdDYyiRNtf9xZcdINVM3QPKX6EWufhN+qBdoLn4DipAEywVog t3Jg== X-Gm-Message-State: AOAM5311iMUDm+K7nTVEYtiHSHBwnrZmki/G9lHZ5Hmm8hJrnLyMiUCx CY+t+R4jX1XYPZ0ix+a5g6hSJQ== X-Google-Smtp-Source: ABdhPJxZTc90zWLsV6P9Ws4zb95s6ky6KR+UaZDb84BhMPOjFe3tqmx/+tQh3/qZUtqlurXxgyOjng== X-Received: by 2002:a17:902:47:: with SMTP id 65mr3843773pla.54.1591264911843; Thu, 04 Jun 2020 03:01:51 -0700 (PDT) Received: from localhost.localdomain ([117.252.66.248]) by smtp.gmail.com with ESMTPSA id np5sm5786992pjb.43.2020.06.04.03.01.46 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 04 Jun 2020 03:01:50 -0700 (PDT) From: Sumit Garg To: daniel.thompson@linaro.org Cc: kgdb-bugreport@lists.sourceforge.net, jason.wessel@windriver.com, dianders@chromium.org, pmladek@suse.com, sergey.senozhatsky@gmail.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, Sumit Garg Subject: [PATCH v6 2/4] kdb: Check status of console prior to invoking handlers Date: Thu, 4 Jun 2020 15:31:17 +0530 Message-Id: <1591264879-25920-3-git-send-email-sumit.garg@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1591264879-25920-1-git-send-email-sumit.garg@linaro.org> References: <1591264879-25920-1-git-send-email-sumit.garg@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Check if a console is enabled prior to invoking corresponding write handler. Suggested-by: Sergey Senozhatsky Signed-off-by: Sumit Garg Reviewed-by: Daniel Thompson Reviewed-by: Douglas Anderson Revieved-by: Petr Mladek --- kernel/debug/kdb/kdb_io.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c index 2d42a02..58b7d25 100644 --- a/kernel/debug/kdb/kdb_io.c +++ b/kernel/debug/kdb/kdb_io.c @@ -560,6 +560,8 @@ static void kdb_msg_write(const char *msg, int msg_len) } for_each_console(c) { + if (!(c->flags & CON_ENABLED)) + continue; c->write(c, msg, msg_len); touch_nmi_watchdog(); } -- 2.7.4