From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C0BBA1863 for ; Wed, 28 Dec 2022 15:40:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1D915C433D2; Wed, 28 Dec 2022 15:40:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672242041; bh=IdNOCukQi4WqQbNJ8DBWaJ9xqZqO2hb2IG8hlx24j1s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=w2tHIRn9XcfcP/rFzAzBpJeqQe0wY2p2WUbIW/2Vv3mv78WGIp39rZouHt9R2smF1 mwUoz0p+dyZWm5uIkRLDn4Y9V0Mgbpx5ANCmSW4rQYnBP4wjZ91TsuMkycbhb6oVag mFNjsIkccALJonkqJX5tWTYNuufjRt7rb/2D/zaw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Michael Ellerman , Sasha Levin Subject: [PATCH 5.15 556/731] powerpc/xive: add missing iounmap() in error path in xive_spapr_populate_irq_data() Date: Wed, 28 Dec 2022 15:41:03 +0100 Message-Id: <20221228144312.653685105@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221228144256.536395940@linuxfoundation.org> References: <20221228144256.536395940@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Yang Yingliang [ Upstream commit 8b49670f3bb3f10cd4d5a6dca17f5a31b173ecdc ] If remapping 'data->trig_page' fails, the 'data->eoi_mmio' need be unmapped before returning from xive_spapr_populate_irq_data(). Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller") Signed-off-by: Yang Yingliang Reviewed-by: Cédric Le Goater Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20221017032333.1852406-1-yangyingliang@huawei.com Signed-off-by: Sasha Levin --- arch/powerpc/sysdev/xive/spapr.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/sysdev/xive/spapr.c b/arch/powerpc/sysdev/xive/spapr.c index 2bf78a30238b..43bd2579d942 100644 --- a/arch/powerpc/sysdev/xive/spapr.c +++ b/arch/powerpc/sysdev/xive/spapr.c @@ -437,6 +437,7 @@ static int xive_spapr_populate_irq_data(u32 hw_irq, struct xive_irq_data *data) data->trig_mmio = ioremap(data->trig_page, 1u << data->esb_shift); if (!data->trig_mmio) { + iounmap(data->eoi_mmio); pr_err("Failed to map trigger page for irq 0x%x\n", hw_irq); return -ENOMEM; } -- 2.35.1