From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4495FC433EF for ; Mon, 14 Feb 2022 09:35:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C11AB6B0072; Mon, 14 Feb 2022 04:35:43 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BC2896B0073; Mon, 14 Feb 2022 04:35:43 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AB23F6B0078; Mon, 14 Feb 2022 04:35:43 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0030.hostedemail.com [216.40.44.30]) by kanga.kvack.org (Postfix) with ESMTP id 9991A6B0072 for ; Mon, 14 Feb 2022 04:35:43 -0500 (EST) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 46D299A271 for ; Mon, 14 Feb 2022 09:35:43 +0000 (UTC) X-FDA: 79140878166.16.D61FCBE Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf03.hostedemail.com (Postfix) with ESMTP id 0F40020005 for ; Mon, 14 Feb 2022 09:35:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=/kVIgFJ8ubFPieTzVWtZtI9HqscvRt6tDLYaMfGuR94=; b=r8H/h8Igq0GzYQRu9lX+4vZpkz PZT8xyiFTwmYfH8zubh1ywbnAQuGsxBwPjrNNrXA/o5U2JjK2PG0V0xRX/sJIDHEu54dC9/6UiQmL F+Y3JW1EqyYpAxhmND0M+vmbJxIzO/juCEX+l1Qxgp3yY0pks+vRezLo8UnjVQpQDnV21BZMIq5eU cLBiNTmqSIIC6wmCTCn7UcAw94DlAlbMufV+uEMoQM32jv5F+3qmu69tvjWwB6IZXb47Xsbg77XjX QWG7HLXHrI/r9z3omtqEEq49GOXiD1gj/PIcUnY9oVdJvwe1GhbBV1iVjaieum7WgA5MFUOuUx9Vo TDY7Hsgw==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1nJXlV-00CkQY-Gv; Mon, 14 Feb 2022 09:35:25 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id CF6CF300472; Mon, 14 Feb 2022 10:35:22 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 94416203C074A; Mon, 14 Feb 2022 10:35:22 +0100 (CET) Date: Mon, 14 Feb 2022 10:35:22 +0100 From: Peter Zijlstra To: Paul Menzel Cc: Michael Ellerman , linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, Josh Poimboeuf , Jason Baron , rcu@vger.kernel.org, LKML , "Paul E. McKenney" , Zhouyi Zhou , christophe.leroy@csgroup.eu Subject: Re: BUG: sleeping function called from invalid context at include/linux/sched/mm.h:256 Message-ID: References: <244218af-df6a-236e-0a52-268247dd8271@molgen.mpg.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <244218af-df6a-236e-0a52-268247dd8271@molgen.mpg.de> X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 0F40020005 X-Stat-Signature: mogt559zhds4drxn6j6up87zjoq6mm7p X-Rspam-User: Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b="r8H/h8Ig"; spf=none (imf03.hostedemail.com: domain of peterz@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=peterz@infradead.org; dmarc=none X-HE-Tag: 1644831341-371011 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000015, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sun, Feb 13, 2022 at 12:05:50AM +0100, Paul Menzel wrote: > [ 0.012154][ T1] BUG: sleeping function called from invalid context at > [ 0.022443][ T1] [c0000000084837d0] [c000000000961aac] > dump_stack_lvl+0xa0/0xec (unreliable) > [ 0.023356][ T1] [c000000008483820] [c00000000019b314] > __might_resched+0x2f4/0x310 > [ 0.024174][ T1] [c0000000084838b0] [c0000000004c0c70] > kmem_cache_alloc+0x220/0x4b0 > [ 0.025000][ T1] [c000000008483920] [c000000000448af4] > __pud_alloc+0x74/0x1d0 > [ 0.025772][ T1] [c000000008483970] [c00000000008fe3c] > hash__map_kernel_page+0x2cc/0x390 > [ 0.026643][ T1] [c000000008483a20] [c0000000000a9944] > do_patch_instruction+0x134/0x4a0 do_patch_instruction() rightfully disables IRQs, but then it goes and tries a memory alloc, which seems a bit daft. I'm thinking Christophe might know more... he's recently been poking at Power text poking..