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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 28DC3C4360F for ; Thu, 4 Apr 2019 07:35:01 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EAA8B2075E for ; Thu, 4 Apr 2019 07:35:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="G4T9OUwb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EAA8B2075E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=jFpSx7e03JjDz4Gx2IOdbnLvcMT45FzkKySs1/cZpao=; b=G4T9OUwb63e5xS R7CPsARl1H9Uko6d5EopZVVRvp/+zteeLECEbvkIQDwWIt8RCdwAbJA0n57n7VfdQ0I8JwhYbUG0h CjS/0cGwr0NbCNbgMyDBYeitoXqCEWi1BXcFTOm1yr3bEp0iF+s+0KpXbAWjVr7YpCysGbcUAc+fO ZKAuwArpVk0GRWP8Fa8bvH9ahJH4KOPeXgAudjfZC5VB6fJDtKsj1+nD9vu4QAlu99KrC7Ok+/V7r OjKM/Add99DtpeQGgA4NwR+XNUgUSdsntzFrgp+yFPt5EXsz6s3nAB4/wQcjp81Oh1MREESoyeekd a1WOG1V4Y/gi44xKl8Lw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hBwtj-00052B-Dh; Thu, 04 Apr 2019 07:34:55 +0000 Received: from szxga04-in.huawei.com ([45.249.212.190] helo=huawei.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hBwtg-00051o-2u for linux-arm-kernel@lists.infradead.org; Thu, 04 Apr 2019 07:34:53 +0000 Received: from DGGEMS407-HUB.china.huawei.com (unknown [10.3.19.207]) by Forcepoint Email with ESMTP id 00F4FB6C860712811FE0; Thu, 4 Apr 2019 15:34:46 +0800 (CST) Received: from localhost.localdomain.localdomain (10.175.113.25) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.408.0; Thu, 4 Apr 2019 15:34:37 +0800 From: Kefeng Wang To: Thomas Gleixner , Marc Zyngier , , Subject: [PATCH] genirq: Fix uninitialized request_mutex Date: Thu, 4 Apr 2019 15:45:12 +0800 Message-ID: <20190404074512.145533-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190404_003452_302648_6DE8485C X-CRM114-Status: UNSURE ( 8.06 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kefeng Wang Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org When !CONFIG_SPARSE_IRQ, request_mutex of struct irq_desc won't be initialiezed, it leads to system hung, fix it. Fixes: 9114014cf4e6 ("genirq: Add mutex to irq desc to serialize request/free_irq()") Signed-off-by: Kefeng Wang --- kernel/irq/irqdesc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index 13539e12cd80..9f8a709337cf 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -558,6 +558,7 @@ int __init early_irq_init(void) alloc_masks(&desc[i], node); raw_spin_lock_init(&desc[i].lock); lockdep_set_class(&desc[i].lock, &irq_desc_lock_class); + mutex_init(&desc[i].request_mutex); desc_set_defaults(i, &desc[i], node, NULL, NULL); } return arch_early_irq_init(); -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel