From patchwork Fri Apr 9 09:53:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 418761 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 33ED1C433B4 for ; Fri, 9 Apr 2021 10:02:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0DD966135A for ; Fri, 9 Apr 2021 10:02:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233470AbhDIKCn (ORCPT ); Fri, 9 Apr 2021 06:02:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:45194 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233544AbhDIKAR (ORCPT ); Fri, 9 Apr 2021 06:00:17 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id EA7306120F; Fri, 9 Apr 2021 09:59:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1617962356; bh=2IlAAvJl980xN2comXzCKxkWcE4IIyjNVu1VRmB5qJ4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xc/MyZUz3xcV4+HBglC4+Jh9Qmh4gL2Dhy/Bje9D0Qe4SqMMR2KIqLqBK4P29wmer y1trYkGp8J3PEsjubxkOWvknBFydsbEWyu8I6jkJxmb2KR1xmzIiXQrPuQKa6AnncQ nq0xSwu+n7N0j9AZWWwRD+h80qQMUT34lNSAj9Eg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sergei Trofimovich , Andrew Morton , Linus Torvalds , Sasha Levin Subject: [PATCH 5.10 26/41] ia64: mca: allocate early mca with GFP_ATOMIC Date: Fri, 9 Apr 2021 11:53:48 +0200 Message-Id: <20210409095305.661735268@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210409095304.818847860@linuxfoundation.org> References: <20210409095304.818847860@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sergei Trofimovich [ Upstream commit f2a419cf495f95cac49ea289318b833477e1a0e2 ] The sleep warning happens at early boot right at secondary CPU activation bootup: smp: Bringing up secondary CPUs ... BUG: sleeping function called from invalid context at mm/page_alloc.c:4942 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.12.0-rc2-00007-g79e228d0b611-dirty #99 .. Call Trace: show_stack+0x90/0xc0 dump_stack+0x150/0x1c0 ___might_sleep+0x1c0/0x2a0 __might_sleep+0xa0/0x160 __alloc_pages_nodemask+0x1a0/0x600 alloc_page_interleave+0x30/0x1c0 alloc_pages_current+0x2c0/0x340 __get_free_pages+0x30/0xa0 ia64_mca_cpu_init+0x2d0/0x3a0 cpu_init+0x8b0/0x1440 start_secondary+0x60/0x700 start_ap+0x750/0x780 Fixed BSP b0 value from CPU 1 As I understand interrupts are not enabled yet and system has a lot of memory. There is little chance to sleep and switch to GFP_ATOMIC should be a no-op. Link: https://lkml.kernel.org/r/20210315085045.204414-1-slyfox@gentoo.org Signed-off-by: Sergei Trofimovich Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- arch/ia64/kernel/mca.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index 2703f7795672..bd0a51dc345a 100644 --- a/arch/ia64/kernel/mca.c +++ b/arch/ia64/kernel/mca.c @@ -1822,7 +1822,7 @@ ia64_mca_cpu_init(void *cpu_data) data = mca_bootmem(); first_time = 0; } else - data = (void *)__get_free_pages(GFP_KERNEL, + data = (void *)__get_free_pages(GFP_ATOMIC, get_order(sz)); if (!data) panic("Could not allocate MCA memory for cpu %d\n",