From patchwork Mon Jul 27 13:02:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: zhukeqian X-Patchwork-Id: 11686853 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4D1EA722 for ; Mon, 27 Jul 2020 13:04:37 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 2DAD22075A for ; Mon, 27 Jul 2020 13:04:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2DAD22075A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:60814 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k02o0-0007gi-Ay for patchwork-qemu-devel@patchwork.kernel.org; Mon, 27 Jul 2020 09:04:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48726) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k02n6-0006R7-Re; Mon, 27 Jul 2020 09:03:40 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:4159 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k02n4-0003eI-HC; Mon, 27 Jul 2020 09:03:40 -0400 Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id C22D3F64D3A1EA21647B; Mon, 27 Jul 2020 21:03:24 +0800 (CST) Received: from DESKTOP-5IS4806.china.huawei.com (10.174.187.22) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.487.0; Mon, 27 Jul 2020 21:02:53 +0800 From: Keqian Zhu To: , Subject: [PATCH] bugfix: irq: Avoid covering object refcount of qemu_irq Date: Mon, 27 Jul 2020 21:02:25 +0800 Message-ID: <20200727130225.32640-1-zhukeqian1@huawei.com> X-Mailer: git-send-email 2.8.4.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.174.187.22] X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.190; envelope-from=zhukeqian1@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/27 09:03:25 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , yezengruan@huawei.com, Keqian Zhu , Li Qiang , "Dr . David Alan Gilbert" , Esteban Bosse , Paolo Bonzini , wanghaibin.wang@huawei.com, =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Avoid covering object refcount of qemu_irq, otherwise it may causes memory leak. Signed-off-by: Keqian Zhu --- hw/core/irq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/hw/core/irq.c b/hw/core/irq.c index fb3045b912..59af4dfc74 100644 --- a/hw/core/irq.c +++ b/hw/core/irq.c @@ -125,7 +125,9 @@ void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n) int i; qemu_irq *old_irqs = qemu_allocate_irqs(NULL, NULL, n); for (i = 0; i < n; i++) { - *old_irqs[i] = *gpio_in[i]; + old_irqs[i]->handler = gpio_in[i]->handler; + old_irqs[i]->opaque = gpio_in[i]->opaque; + gpio_in[i]->handler = handler; gpio_in[i]->opaque = &old_irqs[i]; }