Message ID | 20211015235219.2191207-8-mcgrof@kernel.org (mailing list archive) |
---|---|
State | Handled Elsewhere |
Headers | show
Return-Path: <linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=VKj0PyAg; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=<UNKNOWN>) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4HWNRl5fdVz9sS8 for <incoming@patchwork.ozlabs.org>; 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Sat, 16 Oct 2021 10:52:57 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=vLYLL0oFZhxGylgSJPWXsGjPK2psQoUWyxkb9au47Xw=; b=VKj0PyAggUPHY58Y64VhZFHAZk FhpZFFJ2m6Cm3SHaekc0CDiJyLp+OD6ip4tp6f0fm0KLP8DzK5r4zUN+TBF+Zr9exRvHYoP1U4ZSo xvSMZDGCzyHG9yaWXd/DzzmwcgGlruPb5+CD0ctA68F79eEVs002wvsQCyuEyhihClXsJYS97NwsL 0m5eBo0Qkmdn5r8hNV7zk/1puPeJ1cjcM3zzlg31bplOURK1wIXcWSlBuo2kj1ISDbTfOi3ggEGBn h4r+mufchQFxCHDsxXaWIpgxoqkHJHOwvHKOU/0fa0aDDgmXK1any8EXm3niZiuki8Z2zds4ZpISB ehigutRw==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mbWzt-009C37-6Y; Fri, 15 Oct 2021 23:52:21 +0000 From: Luis Chamberlain <mcgrof@kernel.org> To: axboe@kernel.dk, geoff@infradead.org, mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, jim@jtan.com, minchan@kernel.org, ngupta@vflare.org, senozhatsky@chromium.org, richard@nod.at, miquel.raynal@bootlin.com, vigneshr@ti.com, dan.j.williams@intel.com, vishal.l.verma@intel.com, dave.jiang@intel.com, ira.weiny@intel.com, kbusch@kernel.org, hch@lst.de, sagi@grimberg.me Subject: [PATCH 07/13] nvdimm/blk: add error handling support for add_disk() Date: Fri, 15 Oct 2021 16:52:13 -0700 Message-Id: <20211015235219.2191207-8-mcgrof@kernel.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211015235219.2191207-1-mcgrof@kernel.org> References: <20211015235219.2191207-1-mcgrof@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org> List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe> List-Archive: <http://lists.ozlabs.org/pipermail/linuxppc-dev/> List-Post: <mailto:linuxppc-dev@lists.ozlabs.org> List-Help: <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help> List-Subscribe: <https://lists.ozlabs.org/listinfo/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe> Cc: nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, Luis Chamberlain <mcgrof@kernel.org>, linux-mtd@lists.infradead.org, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" <linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> |
Series |
block: add_disk() error handling stragglers
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expand
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diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c index 591fa1f86f1e..9f1eb41404ac 100644 --- a/drivers/nvdimm/blk.c +++ b/drivers/nvdimm/blk.c @@ -265,7 +265,9 @@ static int nsblk_attach_disk(struct nd_namespace_blk *nsblk) } set_capacity(disk, available_disk_size >> SECTOR_SHIFT); - device_add_disk(dev, disk, NULL); + rc = device_add_disk(dev, disk, NULL); + if (rc) + goto out_before_devm_err; /* nd_blk_release_disk() is called if this fails */ if (devm_add_action_or_reset(dev, nd_blk_release_disk, disk))
We never checked for errors on add_disk() as this function returned void. Now that this is fixed, use the shiny new error handling. Since nvdimm/blk uses devm we just need to move the devm registration towards the end. And in hindsight, that seems to also provide a fix given del_gendisk() should not be called unless the disk was already added via add_disk(). The probably of that issue happening is low though, like OOM while calling devm_add_action(), so the fix is minor. We manually unwind in case of add_disk() failure prior to the devm registration. Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> --- drivers/nvdimm/blk.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)