Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp778235pxb; Wed, 24 Feb 2021 15:04:06 -0800 (PST) X-Google-Smtp-Source: ABdhPJxhG3DO6vUot8qL9f1eF1G/UZIYuDzksHM2G6XriBI7tVfGJ/ETOw7+ayCVW5RYmeaTo8mF X-Received: by 2002:aa7:d296:: with SMTP id w22mr151173edq.264.1614207846003; Wed, 24 Feb 2021 15:04:06 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1614207845; cv=none; d=google.com; s=arc-20160816; b=gYj9pdqstx/kNQuqspqApMMV5M83rNqjF+mT84SO0I5YUn4XQJidu9dLMN9we08Qj+ OBNLfsGGTHT+c6XrgvBdc7yL0Z/AbWuZ0oKimhEGktoV5U96N5lQmBkhirpugWBkhhuT F0PXLqIVztbtyoRKCPzI6Gr/Jpe8RyjgYaWIvxGhjk/Nbm6/PQkSxh7MXnOkZWTaCK0D 46QFeHXaUBGYD8ohj7A7lY0qzSnIXZiAAKsSYcn/iQAiEEjToFfYPjklnw9IpgRextPC lA7jUn0zo3n3+poFdWrgR+e6nd0YTdZTTlfKZCQxhUUodDOEiMGzWmmEQ9Tryvm7aUiM w7Cw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:to:from:subject:message-id:in-reply-to:date :mime-version; bh=9jxPZuiCA7jaDkmkeef5PEjzR4rry7NtmgRm8f+yUDg=; b=sXNJan98WQzJzprXzMcht+1ATwhqOmkcEOijbSxO5AE/lAQ3UMDAvvZu8cgLpyB5Bs fASVW5HxGjJhdfkSTxnx4Wdi+VhIvLv2K0ofykwnXiDabUZbMyMrl0KYml4USUffhk6D II6Ww/wH2F3QbcqAMzvE1Y4UKZrB2+30UCnWsBEb+LKsS6lF9/8uq75h+i7L8qfZL8DY 7YAICe5VLVZO1C7PxAropQJHgijNoLttXaq+9POAc7Phth8wTqDHO5/1NW82Mnd/0rly eYRsR27SZXYpsnzgnoBsSdnZ1OZsLUGrxGe265bbN7+nycptjrBnV94iFU/zmedCuImE 8HEw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id p18si2200653ejy.191.2021.02.24.15.03.42; Wed, 24 Feb 2021 15:04:05 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237169AbhBXNeu (ORCPT + 99 others); Wed, 24 Feb 2021 08:34:50 -0500 Received: from mail-il1-f199.google.com ([209.85.166.199]:34271 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235572AbhBXM6t (ORCPT ); Wed, 24 Feb 2021 07:58:49 -0500 Received: by mail-il1-f199.google.com with SMTP id c16so1457099ile.1 for ; Wed, 24 Feb 2021 04:58:33 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=9jxPZuiCA7jaDkmkeef5PEjzR4rry7NtmgRm8f+yUDg=; b=BCHLaI5MeNHS+YLnK7EWEDLZed+FkRd0AiJwJpqmFATt6o+Yqp4XIIkMbx2iVfjAMn Zld7e1X+ciN1WKwftuH3B0dGOkRLo52RSp80EI8Kthkoqqx4SQHggGnMAcg05tS+nzTY mITYcd5FUPQMRZMy9+kidfwFErgDF7/1aK5h2Qa5rGw5H/lHNwkv7M1gNPW3nFbc8eKE zHGJx1NtI5xNfwdrb9ztQkQaloAWrJKX+zZRHSPZLLf7CvmQ3z/sKkxu0KBLhTujkFfr Gur+ZmPXqc/Jpb19r+75ZWUQ+PkEYCPy//alDxNT5rS5pYv0ZsXeRoLc5l0dO0r4SPoz CMrA== X-Gm-Message-State: AOAM53081D9iYcycWoUw7mXBkHjvy4xhlJIFzkDqJEN3QQp/HMvvbRyQ hMFaESZVpluyUSG0gpaC7KriGMpOno5vH2E7/2JIdHexvXCj MIME-Version: 1.0 X-Received: by 2002:a6b:4a0e:: with SMTP id w14mr24411528iob.140.1614171488521; Wed, 24 Feb 2021 04:58:08 -0800 (PST) Date: Wed, 24 Feb 2021 04:58:08 -0800 In-Reply-To: <0000000000005ccf1b05b7665adc@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002e14c105bc14962e@google.com> Subject: Re: BUG: unable to handle kernel NULL pointer dereference in call_rcu From: syzbot To: adobriyan@gmail.com, akpm@linux-foundation.org, andreyknvl@google.com, aryabinin@virtuozzo.com, dvyukov@google.com, elver@google.com, glider@google.com, gustavoars@kernel.org, linux-kernel@vger.kernel.org, longman@redhat.com, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com, torvalds@linux-foundation.org, vincenzo.frascino@arm.com, vvs@virtuozzo.com, walter-zh.wu@mediatek.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 97593cad003c668e2532cb2939a24a031f8de52d Author: Andrey Konovalov Date: Tue Dec 22 20:03:28 2020 +0000 kasan: sanitize objects when metadata doesn't fit bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=106689b6d00000 start commit: 614cb589 Merge tag 'acpi-5.11-rc1-2' of git://git.kernel.o.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=126689b6d00000 console output: https://syzkaller.appspot.com/x/log.txt?x=146689b6d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=bf519e1e96191576 dashboard link: https://syzkaller.appspot.com/bug?extid=9d3ede723bdc58553f13 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11830e93500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13d92057500000 Reported-by: syzbot+9d3ede723bdc58553f13@syzkaller.appspotmail.com Fixes: 97593cad003c ("kasan: sanitize objects when metadata doesn't fit") For information about bisection process see: https://goo.gl/tpsmEJ#bisection