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=-6.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_PASS,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 67FB6C43441 for ; Sat, 17 Nov 2018 06:00:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 19D5E2081C for ; Sat, 17 Nov 2018 06:00:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=augury.com header.i=@augury.com header.b="D4SEkSeU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 19D5E2081C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=augury.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-bluetooth-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725810AbeKQQQG (ORCPT ); Sat, 17 Nov 2018 11:16:06 -0500 Received: from mail-wm1-f66.google.com ([209.85.128.66]:33947 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725791AbeKQQQG (ORCPT ); Sat, 17 Nov 2018 11:16:06 -0500 Received: by mail-wm1-f66.google.com with SMTP id f1-v6so2272384wmg.1 for ; Fri, 16 Nov 2018 22:00:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=augury.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=lKjUBvp8cZYpTdNf6HyoRHBaIh49PY7FXb3aWN7UQRg=; b=D4SEkSeUSiNCrMNaNv6uF6ipQCyAwAxQbcJjN4OMTI40Q3zbYgtl7u7DnqRkWMNWN6 cNaz+ZP3i/rLX+JNeE5+eMwhQCzrVtOhnbEV7x3pUg47s4kRfGKb/ZPF0RnsQqwoZwuw 1E9uhygZACIjzHNwflqNQM9zFkmCyOGIiUkTo= 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:mime-version :content-transfer-encoding; bh=lKjUBvp8cZYpTdNf6HyoRHBaIh49PY7FXb3aWN7UQRg=; b=HS6kVl1pGzxTdnewUv14aOWsxzKtQ2CQ3zIt7EMiVnnnULs+WqGny5SeVEbGuyGk7E oO7fADRV1GZb0bFegfpzu25i9U5iqvfERVigcC+pIyUfXNevZ2n7CqnhxDLTkpFMxB9J JPUwCcn5L49bJY/LRirTn/LAu4dEv0mT81OooyfshC2SJ6iah146g4Hf1SM3/+rZQhTi 5BhOns78rn4xEqzvwm200H//8BGRveI3Wc7uVx6yTlgwh23umctp3/K8vaZl5+0AipX5 FxIbmHhiH0Xuey+Snbx2yA1y/xoYL1HK2NSuvVZg6vwOeaAv7xSHa+eExBrHzrf1rr9z Oh2g== X-Gm-Message-State: AA+aEWYFdnz2t+iAkdoxUjdY5aed0mME5oyq1+8l6CeDsQH7PYcOdvpu 0FohCSLGpIniAjRm9B489P0T1jUun/jW9VsO0Zh3G+6parJVjSrk0KcIaOZX6VnmDP0hp/yQZ5i fCROlbbGlEmGwDTDimVd4GZjyoq8JqcnhE6bbOOdfkk4WfblijA+iNy7MInszafR2AApfEBATEc 9dcjg= X-Google-Smtp-Source: AFSGD/UpmwkF5Jyjs55KHJFosadL5/dmkRJeDA+9nFBtHMpKeZC0oTaNnNW0B04jyImRO8gesHjWlg== X-Received: by 2002:a1c:4843:: with SMTP id v64mr263335wma.79.1542434431754; Fri, 16 Nov 2018 22:00:31 -0800 (PST) Received: from localhost.localdomain (bzq-79-182-246-1.red.bezeqint.net. [79.182.246.1]) by smtp.gmail.com with ESMTPSA id q11-v6sm26935130wrj.7.2018.11.16.22.00.29 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 16 Nov 2018 22:00:30 -0800 (PST) From: Gal Ben-Haim To: linux-bluetooth@vger.kernel.org Cc: Gal Ben-Haim Subject: [PATCH BlueZ] core: Catch SIGPIPE Date: Sat, 17 Nov 2018 08:00:24 +0200 Message-Id: <20181117060024.10390-1-gbenhaim@augury.com> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org bluetoothd receives a SIGPIPE and terminates if writing to a pipe that was acquired by AcquireNotify and there are no readers. it can be reproduced by terminating the reader process without closing the reader end of the pipe. Catching SIGPIPE will cause the write call to return an EPIPE error which will be logged as "io_send: Broken pipe". --- src/main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/main.c b/src/main.c index 4716f5388..54cdb8d3f 100644 --- a/src/main.c +++ b/src/main.c @@ -533,6 +533,8 @@ static gboolean signal_handler(GIOChannel *channel, GIOCondition cond, case SIGUSR2: __btd_toggle_debug(); break; + case SIGPIPE: + break; } return TRUE; @@ -549,6 +551,7 @@ static guint setup_signalfd(void) sigaddset(&mask, SIGINT); sigaddset(&mask, SIGTERM); sigaddset(&mask, SIGUSR2); + sigaddset(&mask, SIGPIPE); if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) { perror("Failed to set signal mask"); -- 2.19.1