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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10ADCC6FD1C for ; Fri, 24 Mar 2023 14:39:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231964AbjCXOjO (ORCPT ); Fri, 24 Mar 2023 10:39:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51516 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229938AbjCXOjL (ORCPT ); Fri, 24 Mar 2023 10:39:11 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 455A45FD6 for ; Fri, 24 Mar 2023 07:38:53 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id E559933777; Fri, 24 Mar 2023 14:38:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1679668731; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=UKJTT114awypObJqVoyD5FQgq8SxHGNI6Q09/lVH1qA=; b=hAn7g8TKmj+IBZrk6WaTtKymuISuCtlh2WoDU//bvhZtlBOHLxeRm7kC8mEokCIQ5u1+6L Dmhtd6aOdH9xvvjFKY0LI0GbZ+U0giA68rNyxbKdUVa15bXY+SNz9uMMM166eGYNc00t7c lA26pdz6vnqiieHMThSB1TQh8oBod+o= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id C7439138ED; Fri, 24 Mar 2023 14:38:51 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id Pt+gLfu1HWQeUgAAMHmgww (envelope-from ); Fri, 24 Mar 2023 14:38:51 +0000 Date: Fri, 24 Mar 2023 15:38:51 +0100 From: Michal Hocko To: Joel Fernandes Cc: "Kirill A. Shutemov" , Linus Torvalds , Naresh Kamboju , Andrew Morton , linux-mm@kvack.org, LKML Subject: Re: WARN_ON in move_normal_pmd Message-ID: References: <20230324130530.xsmqcxapy4j2aaik@box.shutemov.name> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri 24-03-23 09:43:10, Joel Fernandes wrote: [...] > Michal, would you also mind providing the full stack you are seeing > just so we know it is the same issue (i.e. triggered via exec)? Yes, it is the exec path [ 544.236782][T20518] Call Trace: [ 544.237467][T20518] [ 544.238034][T20518] move_page_tables+0x8e4/0x930 [ 544.238039][T20518] shift_arg_pages+0xb5/0x180 [ 544.238044][T20518] ? mprotect_fixup+0x1ce/0x2e0 [ 544.238046][T20518] setup_arg_pages+0x256/0x2b0 [ 544.238049][T20518] load_elf_binary+0x375/0x15d0 [ 544.238052][T20518] ? __kernel_read+0x2e8/0x310 [ 544.238056][T20518] ? __kernel_read+0x2e8/0x310 [ 544.238059][T20518] bprm_execve+0x2ec/0x650 [ 544.238062][T20518] do_execveat_common.isra.42+0x1ed/0x230 [ 544.238064][T20518] __x64_sys_execve+0x32/0x40 [ 544.238067][T20518] do_syscall_64+0x5b/0x80 [ 544.238072][T20518] ? __SCT__preempt_schedule_notrace+0x8/0x8 [ 544.238075][T20518] ? __SCT__preempt_schedule_notrace+0x8/0x8 [ 544.238076][T20518] ? exit_to_user_mode_prepare+0xfc/0x230 [ 544.250270][T20518] ? syscall_exit_to_user_mode+0x18/0x40 [ 544.250292][T20518] ? do_syscall_64+0x67/0x80 [ 544.250294][T20518] ? exc_page_fault+0x67/0x150 [ 544.250297][T20518] entry_SYSCALL_64_after_hwframe+0x61/0xcb -- Michal Hocko SUSE Labs