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Sun, 28 Jan 2018 17:47:36 -0500 Received: from mail-by2nam03on0118.outbound.protection.outlook.com ([104.47.42.118]:52393 "EHLO NAM03-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932269AbeA1W3P (ORCPT ); Sun, 28 Jan 2018 17:29:15 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Dave Young , Linus Torvalds , Peter Zijlstra , "bp@suse.de" , "linux-efi@vger.kernel.org" , "linux-mm@kvack.org" , "Ingo Molnar" , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 45/49] mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep Thread-Topic: [PATCH AUTOSEL for 4.9 45/49] mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep Thread-Index: AQHTmIdEXRJjPruKZ0OhLYnv3s8C/Q== Date: Sun, 28 Jan 2018 22:28:06 +0000 Message-ID: <20180128222727.22404-45-alexander.levin@microsoft.com> References: <20180128222727.22404-1-alexander.levin@microsoft.com> In-Reply-To: <20180128222727.22404-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;MW2PR2101MB0924;7:ays25fap0lJbJmah2GZv4fUbS7wwDBTWSWcM4hha1WTtNPwJej7BPMgh14AuwBTc06char0/vQBA4yk0KVPgmOwXUxfY/rn30uT6iWshhY8fdSN/d0F+HJR1spfJZhccvf5dJun6459sm9ry/ytrX+NVLAChcX+em3kUzXOVmZfQRFnyYtGlnECUqOo32LrvW3wVzMuJgx3FXvdC1ULXf0imC982dfRlrcXoxFC6kN2XWzA4cA7wzQ5ScdZue/IZ x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 81bf0901-5f95-4e42-518d-08d5669e8cb0 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(4534165)(4627221)(201703031133081)(201702281549075)(48565401081)(5600026)(4604075)(3008032)(2017052603307)(7193020);SRVR:MW2PR2101MB0924; 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x-microsoft-antispam-message-info: 4pRciTtvaBXxB+qs5KLcL3RsnOJ2T9eH8FjIxIqAWMsyXaZ3BQkUp1XVtDp7f6vkUWH+SI5HjkTpW6I1UaYmxQ== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 81bf0901-5f95-4e42-518d-08d5669e8cb0 X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Jan 2018 22:28:06.3757 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2PR2101MB0924 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Dave Young [ Upstream commit 7f6f60a1ba52538c16f26930bfbcfe193d9d746a ] earlyprintk=3Defi,keep does not work any more with a warning in mm/early_ioremap.c: WARN_ON(system_state !=3D SYSTEM_BOOTING): Boot just hangs because of the earlyprintk within the earlyprintk implementation code itself. This is caused by a new introduced middle state in: 69a78ff226fe ("init: Introduce SYSTEM_SCHEDULING state") early_ioremap() is fine in both SYSTEM_BOOTING and SYSTEM_SCHEDULING states, original condition should be updated accordingly. Signed-off-by: Dave Young Acked-by: Thomas Gleixner Cc: Linus Torvalds Cc: Peter Zijlstra Cc: bp@suse.de Cc: linux-efi@vger.kernel.org Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/20171209041610.GA3249@dhcp-128-65.nay.redhat= .com Signed-off-by: Ingo Molnar Signed-off-by: Sasha Levin --- mm/early_ioremap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/early_ioremap.c b/mm/early_ioremap.c index 6d5717bd7197..57540de2b44c 100644 --- a/mm/early_ioremap.c +++ b/mm/early_ioremap.c @@ -103,7 +103,7 @@ __early_ioremap(resource_size_t phys_addr, unsigned lon= g size, pgprot_t prot) enum fixed_addresses idx; int i, slot; =20 - WARN_ON(system_state !=3D SYSTEM_BOOTING); + WARN_ON(system_state >=3D SYSTEM_RUNNING); =20 slot =3D -1; for (i =3D 0; i < FIX_BTMAPS_SLOTS; i++) { --=20 2.11.0