From nobody Tue May 7 22:09:12 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass(p=quarantine dis=none) header.from=suse.com ARC-Seal: i=1; a=rsa-sha256; t=1607508718; cv=none; d=zohomail.com; s=zohoarc; b=nW2VPUv5GRwCnd5dG3cRurbI1juwiHDJbYQSeqxoSkVBnaVjUq55X5/HQu7lFHjTP3T6Wm6HaRNHAWT99bYiuPtEERfHUUYKpDWW1tI3MtALzFCghKXoTc5s4X6yptd5+r9Ixa8B9xlLJAxpwhhJOfrEGg+yzO4S9XpZq1SnOXo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1607508718; h=Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=lp/BX/zYvTTJSC9VfCvCXfJRULVfbr1TBpetvpV+Cfo=; b=T23XeRBKu+xaUGroXKGgvUZ4LTmYP2hiVm1JwHgCtcEzQhVrdVBepL9UCpfJ0sdb2aPk3NGq5MM3m0d6+X7XbWrRqh3jNtDLjDQAXjR/8+I1ZkZCDFKeBJLKHWIAucUoW1pf+W7XJDCGj6VdszzFN4Do12AihnP2MYSGWawou4o= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass header.from= (p=quarantine dis=none) header.from= Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1607508718305159.16667456359232; Wed, 9 Dec 2020 02:11:58 -0800 (PST) Received: from list by lists.xenproject.org with outflank-mailman.48083.85056 (Exim 4.92) (envelope-from ) id 1kmwRN-0005hT-6a; Wed, 09 Dec 2020 10:11:21 +0000 Received: by outflank-mailman (output) from mailman id 48083.85056; Wed, 09 Dec 2020 10:11:21 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kmwRN-0005hM-3H; Wed, 09 Dec 2020 10:11:21 +0000 Received: by outflank-mailman (input) for mailman id 48083; Wed, 09 Dec 2020 10:11:19 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kmwRL-0005hH-28 for xen-devel@lists.xenproject.org; Wed, 09 Dec 2020 10:11:19 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id c0210185-84b6-4c17-a603-10f535e9e90c; Wed, 09 Dec 2020 10:11:17 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id AC6CFAC94; Wed, 9 Dec 2020 10:11:16 +0000 (UTC) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: c0210185-84b6-4c17-a603-10f535e9e90c X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1607508676; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=lp/BX/zYvTTJSC9VfCvCXfJRULVfbr1TBpetvpV+Cfo=; b=CDXncT75s8PkuuzKBjWJ+/rdiXZ+WdhzCg1/7T/SWjXNpddihYd5xSJe/k16ukZGzghXAm oQ5wTadzIhPc0MvnfNb9/0We/IXiQU3HkCllxc5/dTlKxjXA97f89OJGtaIHvVw/Sf4Cfm cO4sAMeS2KWjwBa/YpnQ4QkFWy+NO7Y= From: Juergen Gross To: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org Cc: Juergen Gross , Boris Ostrovsky , Stefano Stabellini Subject: [PATCH] xen/xenbus: make xs_talkv() interruptible for SIGKILL Date: Wed, 9 Dec 2020 11:11:14 +0100 Message-Id: <20201209101114.31522-1-jgross@suse.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) Content-Type: text/plain; charset="utf-8" In case a process waits for any Xenstore action in the xenbus driver it should be interruptible via SIGKILL. Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky --- drivers/xen/xenbus/xenbus_xs.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/xen/xenbus/xenbus_xs.c b/drivers/xen/xenbus/xenbus_xs.c index 3a06eb699f33..1f4d3593e89e 100644 --- a/drivers/xen/xenbus/xenbus_xs.c +++ b/drivers/xen/xenbus/xenbus_xs.c @@ -205,8 +205,15 @@ static bool test_reply(struct xb_req_data *req) =20 static void *read_reply(struct xb_req_data *req) { + int ret; + do { - wait_event(req->wq, test_reply(req)); + ret =3D wait_event_interruptible(req->wq, test_reply(req)); + + if (ret =3D=3D -ERESTARTSYS && fatal_signal_pending(current)) { + req->msg.type =3D XS_ERROR; + return ERR_PTR(-EINTR); + } =20 if (!xenbus_ok()) /* --=20 2.26.2