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 1DC11C25B48 for ; Wed, 25 Oct 2023 00:07:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344721AbjJYAHg (ORCPT ); Tue, 24 Oct 2023 20:07:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55130 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344663AbjJYAHf (ORCPT ); Tue, 24 Oct 2023 20:07:35 -0400 Received: from mail-oa1-f70.google.com (mail-oa1-f70.google.com [209.85.160.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8E499DA for ; Tue, 24 Oct 2023 17:07:33 -0700 (PDT) Received: by mail-oa1-f70.google.com with SMTP id 586e51a60fabf-1e990f0629cso7871540fac.2 for ; Tue, 24 Oct 2023 17:07:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698192452; x=1698797252; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=h61pamVNNcEp402Yhu8TGYZL7jtM04uYQ13XOvQik5E=; b=X86oZKwBmm06QtMKb/GDz3YUN543R0khVbCcL3WAhva3eEqy9ttD4sFB8mRrVy4KbH HUt9Sg1w/7lzivD2ww3+6mHOwfGdQpOK1yP6StIh8x5ouaikL5jK1O7BfoDDqEghk9o7 xVrdjQ5guz274zxhEIOmKyioBSYle//tULo3DIawxFByXmSFbsAGZOekdtdVTblIV8YM neSseNezLtrfs+sKZAkwQZ0NgDvzGR0VZ4jFl7YRz9gCbYEON4j0nJNaa0okzw+SknNM P4QJrWrBXtDTvjEpAJdjgS4+JS/JSBqwrUZ4ddoBBifKQ8962VmI1ffAZEad35ehTJDz 3EqA== X-Gm-Message-State: AOJu0Yxx9LRN5aTOYUMVE6GtZRDwQtGSMKUVhDQ2vOUs2aWVffm4dMp1 SCLLYVRDRSQPDArnMIJGk36GXM/VW2UH3mpyLpe/AZjySVZm X-Google-Smtp-Source: AGHT+IFiUZ73nifBkYmIbZJWY6K2fUH4fZjbeeve6JWATWreguR4LDiCR3OKFBxncuacUu2ENnyxBzEq0NvMaeKy5+r8nopQOnQ/ MIME-Version: 1.0 X-Received: by 2002:a05:6870:7190:b0:1e9:f918:1295 with SMTP id d16-20020a056870719000b001e9f9181295mr6404221oah.7.1698192452670; Tue, 24 Oct 2023 17:07:32 -0700 (PDT) Date: Tue, 24 Oct 2023 17:07:32 -0700 In-Reply-To: <000000000000985ef90607610b0a@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e6dbc706087f3df8@google.com> Subject: Re: [syzbot] [mm?] WARNING: suspicious RCU usage in mas_walk (3) From: syzbot To: akpm@linux-foundation.org, hughd@google.com, liam.howlett@oracle.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, postmaster@duagon.onmicrosoft.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit edd33b8807a1fa6268a71758bf38de0b4adf2e70 Author: Hugh Dickins Date: Tue Oct 3 09:29:00 2023 +0000 mempolicy: migration attempt to match interleave nodes bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13d353cb680000 start commit: e8361b005d7c Add linux-next specific files for 20231023 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=103353cb680000 console output: https://syzkaller.appspot.com/x/log.txt?x=17d353cb680000 kernel config: https://syzkaller.appspot.com/x/.config?x=39bda8753f457952 dashboard link: https://syzkaller.appspot.com/bug?extid=79fcba037b6df73756d3 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13714705680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1236430b680000 Reported-by: syzbot+79fcba037b6df73756d3@syzkaller.appspotmail.com Fixes: edd33b8807a1 ("mempolicy: migration attempt to match interleave nodes") For information about bisection process see: https://goo.gl/tpsmEJ#bisection