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 D934CC7EE24 for ; Thu, 11 May 2023 21:41:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239404AbjEKVl1 (ORCPT ); Thu, 11 May 2023 17:41:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239312AbjEKVlW (ORCPT ); Thu, 11 May 2023 17:41:22 -0400 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6593A7A88 for ; Thu, 11 May 2023 14:41:12 -0700 (PDT) Received: by mail-io1-f69.google.com with SMTP id ca18e2360f4ac-76c56492fa0so594708639f.2 for ; Thu, 11 May 2023 14:41:12 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683841271; x=1686433271; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=vTjs854kFVrlK1WSSeijLY6ud+VzKqMJvGStYdeesmI=; b=VBsqGyxc1qQpmnZYGsJQhPjgkVbn8IdJuiBZntFh/11sXmPcpCUv59lSBC1CONhtic Ry4GVy4nZ0o4V0kz4FyBGUIP3wQl07fG/ro0n/Yayq2vO2n0Sxb/Vxq9H269PwNdhhQ2 XY8bjvEXeFnVWawX4NYZr9bRdxsO4wmmgEld49Bvvpb4bP6CePpawXa+yc6yn/dzA7A2 zDVQeZ/P97bqiXfaYGh6+lW1//9phRqyNuAWhPHpXlYNv+qJVHqDizp+Im/goXkiUTrg bwrcnJ2KzXchJ7VtaJc7U8ZOAt9TrvjHMKlTCPwtmQeKBz9cP/TL+YJFFN5DO9JfbQfF ABTg== X-Gm-Message-State: AC+VfDwPyJJ57oSRiYqlCTMgeQnmtx9+3DD9hO6HALk7MfX/OgWHdzh+ JBQz+vS0LOLMUQNDPH70EbXSo7Ja/+WPCQsaIr2LouWzjI34mIE= X-Google-Smtp-Source: ACHHUZ6nnx+mi6qhXdpqrGFmwFkIe6x57Fg1CvOAQfV7U6lhmTOJQT3H8OTuNHcoqBMbZS/bRl7E3AaWPLzFsp3PkdocVf6hJTjR MIME-Version: 1.0 X-Received: by 2002:a02:860e:0:b0:40f:7382:e4aa with SMTP id e14-20020a02860e000000b0040f7382e4aamr5792489jai.2.1683841271335; Thu, 11 May 2023 14:41:11 -0700 (PDT) Date: Thu, 11 May 2023 14:41:11 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d6168c05fb71d816@google.com> Subject: [syzbot] upstream boot error: BUG: unable to handle kernel NULL pointer dereference in update_sd_lb_stats From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: ac9a78681b92 Linux 6.4-rc1 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1160fb12280000 kernel config: https://syzkaller.appspot.com/x/.config?x=cc86fee67199911d dashboard link: https://syzkaller.appspot.com/bug?extid=cfb5d190e457dc724e57 compiler: arm-linux-gnueabi-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/c35b5b2731d2/non_bootable_disk-ac9a7868.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c04bec59d77d/vmlinux-ac9a7868.xz kernel image: https://storage.googleapis.com/syzbot-assets/070113b307f3/zImage-ac9a7868.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+cfb5d190e457dc724e57@syzkaller.appspotmail.com 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000004 when read [00000004] *pgd=80000080004003, *pmd=00000000 Internal error: Oops: 206 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 15 Comm: rcu_preempt Not tainted 6.4.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express PC is at update_sd_lb_stats.constprop.0+0/0 LR is at update_sd_lb_stats.constprop.0+0/0 pc : [<8028aa74>] lr : [<8028a8ec>] psr: a0000193 sp : df855ba8 ip : df855c0c fp : df855c3c r10: ffff8e76 r9 : df855d34 r8 : 830b4640 r7 : 8309a800 r6 : ddddb400 r5 : df855bdc r4 : 00000000 r3 : 00000000 r2 : fffffff0 r1 : 00000000 r0 : df855bdc Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 80003000 DAC: 00000000 Register r0 information: non-paged memory Register r1 information: 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 000001ff when read [000001ff] *pgd=80000080004003, *pmd=00000000 Internal error: Oops: 206 [#2] PREEMPT SMP ARM Modules linked in: --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup