From patchwork Thu Oct 24 14:28:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tiwei Bie X-Patchwork-Id: 2001780 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=rEBUFztz; dkim=pass (1024-bit key; unprotected) header.d=antgroup.com header.i=@antgroup.com header.a=rsa-sha256 header.s=default header.b=l7ehQW6r; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=patchwork.ozlabs.org) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XZ7rQ4KzDz1xw8 for ; Fri, 25 Oct 2024 01:40:54 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=klL1ZgjZxIjtqjW3xwH+I3qTIyPhe6x0FsOJ1N0m5N4=; b=rEBUFztzP3gNpURo2THcvIHFuE 29I9M3Zqk7K5InSuX5isK6PPSfWd3a+oSFIqBB7V38E9FYxQECkNvkeF12094oKL2A0hYHrrtHpR2 EW+TGxganD9VHxC+fJUQJ2bFvLUjlbsGcb/Hl3dqEoAfU02DkF8Ipasoq55/2jw2OiqvemHFKTXxH Pn0ZEHgh6VSfpcxz7qpqvyZTCnvhNpb1Ma1CDjlUHRu9Oz2AhmRYFahy1KROZTdgASXbsmxrZmJee iuumDDWdZog5GmDC329fhhuoefF60u2YtBPpMWi1d/sY3FBcH9ZvPy8i9QdleAuoGrfAM0KOouR0z jEZyDJqw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t3z1A-00000000mK0-17kF; Thu, 24 Oct 2024 14:40:52 +0000 Received: from out0-207.mail.aliyun.com ([140.205.0.207]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t3ypO-00000000jV6-3brc for linux-um@lists.infradead.org; Thu, 24 Oct 2024 14:28:46 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=antgroup.com; s=default; t=1729780116; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=klL1ZgjZxIjtqjW3xwH+I3qTIyPhe6x0FsOJ1N0m5N4=; b=l7ehQW6rNqL6+Q+AWeyrvaSmnBXLOJDuVom8+SiPFCxZ3xJlDPe70IVFSnsMqr13d9Nl7M9Gqeo4t01X79TusnojIzixxD03TNv4JCX0ZguzGvdJ1jNCd6BXfsYei2D6MpBzjz31s8y2txhkfau/Ij8e1aTo9XvEbudYpvwfg5E= Received: from ubuntu..(mailfrom:tiwei.btw@antgroup.com fp:SMTPD_---.ZreBszI_1729780109 cluster:ay29) by smtp.aliyun-inc.com; Thu, 24 Oct 2024 22:28:34 +0800 From: "Tiwei Bie" To: richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net Cc: , , "Tiwei Bie" Subject: [PATCH 0/4] um: Set parent-death signal for sub-processes Date: Thu, 24 Oct 2024 22:28:24 +0800 Message-Id: <20241024142828.2612828-1-tiwei.btw@antgroup.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241024_072843_423898_CD907FD7 X-CRM114-Status: UNSURE ( 5.15 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.1 (--) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: The ubd io and write_sigio threads/processes may leak e.g. when the main process is killed by "kill -9". Fix it by setting the parent-death signal for them. Tiwei Bie (4): um: Add os_set_pdeathsig helper function um: Set parent-death signal for ubd io thread/process um: Set parent-death signal for write_sigio thread/process um: Use os_set_pdeathsig helper [...] Content analysis details: (-2.1 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 RCVD_IN_VALIDITY_CERTIFIED_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to Validity was blocked. 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See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. [140.205.0.207 listed in bl.score.senderscore.com] 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org The ubd io and write_sigio threads/processes may leak e.g. when the main process is killed by "kill -9". Fix it by setting the parent-death signal for them. Tiwei Bie (4): um: Add os_set_pdeathsig helper function um: Set parent-death signal for ubd io thread/process um: Set parent-death signal for write_sigio thread/process um: Use os_set_pdeathsig helper in winch thread/process arch/um/drivers/chan_user.c | 3 +-- arch/um/drivers/ubd_kern.c | 1 + arch/um/include/shared/os.h | 2 ++ arch/um/os-Linux/process.c | 6 ++++++ arch/um/os-Linux/sigio.c | 1 + 5 files changed, 11 insertions(+), 2 deletions(-)