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 E1CF2C77B60 for ; Fri, 28 Apr 2023 20:52:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346739AbjD1UwQ convert rfc822-to-8bit (ORCPT ); Fri, 28 Apr 2023 16:52:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36440 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345610AbjD1UwN (ORCPT ); Fri, 28 Apr 2023 16:52:13 -0400 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0FAB94C27 for ; Fri, 28 Apr 2023 13:52:07 -0700 (PDT) Received: by mail-il1-f197.google.com with SMTP id e9e14a558f8ab-32ad2e6cf31so2324595ab.2 for ; Fri, 28 Apr 2023 13:52:07 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682715126; x=1685307126; h=content-transfer-encoding:to:from:subject:message-id:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=E/NjsPVieb2u9eUzuZNastdbtfq80Ol69PxzBP/f3iY=; b=cgJ7/BrWjCzKq+mZdI1DWdUhtSWcjzbgkLMRoT7STTpeodgsBLn2Uqs6omdCNrBe3N MdeVeA8mzYuRujHgoayppCEhW/nkwK40yDJ2UVmTH99pVWdxKGhGMS3pW4BGSQfa10yN FoMSNCS6ckfvyVJRy9SSmP7enMGwdTypsyxKW6vDfx+1ROOYSTyyfFnYh8pgxh+3UMke dGNkk0IygiSoRGqyjeiwRFeKlx2CsVQWPmUBFKkbMdYFgp9fmrmrg3j3lZtiyKW8rZdX w1deIfhBRVaP9pXLCGl91R7Ci8c/oTZLdVNr4Av1Yq3kBtOKX15dvw3cmLgMljiZiFA4 1Qkg== X-Gm-Message-State: AC+VfDwSWEfh2ItL7VzDuj3XV5DDpAT+Cg8hiIi8cmQQfRI/KvyBdL8h ty8iDfXISnmmI1NnPBGY2V8nE/ybVL2dL9d6R6Mi2nY6uDNReB8= X-Google-Smtp-Source: ACHHUZ5eoKCTQxu3wUQS8+sKsnRUYLXHc20NPPcCZ+6dRXTx1LY5e4bCPfJfAXRWILIkUzgGVhFC0JWB1ppLbRZvSq5Tyj4uAhJ+ MIME-Version: 1.0 X-Received: by 2002:a02:964c:0:b0:40f:ae69:a144 with SMTP id c70-20020a02964c000000b0040fae69a144mr2975216jai.5.1682715126045; Fri, 28 Apr 2023 13:52:06 -0700 (PDT) Date: Fri, 28 Apr 2023 13:52:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000058a08405fa6ba52a@google.com> Subject: [syzbot] upstream boot error: BUG: unable to handle kernel NULL pointer dereference in corrupted From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 22b8cc3e78f5 Merge tag 'x86_mm_for_6.4' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11fa5010280000 kernel config: https://syzkaller.appspot.com/x/.config?x=1af34c4cafb72074 dashboard link: https://syzkaller.appspot.com/bug?extid=0f3348b0cb4da6b6072d 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 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0f3348b0cb4da6b6072d@syzkaller.appspotmail.com Movable zone start for each node Early memory node ranges node 0: [mem 0x0000000080000000-0x00000000ffffffff] Initmem setup node 0 [mem 0x0000000080000000-0x00000000ffffffff] percpu: Embedded 19 pages/cpu s47048 r8192 d22584 u77824 Kernel command line: root=/dev/vda console=ttyAMA0 earlyprintk=serial net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 ima_policy=tcb nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 binder.debug_mask=0 rcupdate.rcu_expedited=1 rcupdate.rcu_cpu_stall_cputime=1 no_hash_pointers page_owner=on sysctl.vm.nr_hugepages=4 sysctl.vm.nr_overcommit_hugepages=4 secretmem.enable=1 sysctl.max_rcu_stall_to_panic=1 msr.allow_writes=off coredump_filter=0xffff root=/dev/vda console=ttyAMA0 vmalloc=512M smp.csd_lock_timeout=300000 watchdog_thresh=165 workqueue.watchdog_thresh=420 sysctl.net.core.netdev_unregister_timeout_secs=420 dummy_hcd.num=2 panic_on_warn=1 Unknown kernel command line parameters "earlyprintk=serial page_owner=on", will be passed to user space. Dentry cache hash table entries: 262144 (order: 8, 1048576 bytes, linear) Inode-cache hash table entries: 131072 (order: 7, 524288 bytes, linear) Built 1 zonelists, mobility grouping on. Total pages: 520868 allocated 2097152 bytes of page_ext mem auto-init: stack:off, heap alloc:on, heap free:off software IO TLB: area num 2. software IO TLB: mapped [mem 0x00000000d9a47000-0x00000000dda47000] (64MB) Memory: 1954368K/2097152K available (22528K kernel code, 2361K rwdata, 8400K rodata, 2048K init, 867K bss, 126400K reserved, 16384K cma-reserved, 524288K highmem) SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 trace event string verifier disabled rcu: Preemptible hierarchical RCU implementation. rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. rcu: RCU callback double-/use-after-free debug is enabled. All grace periods are expedited (rcu_expedited). Trampoline variant of Tasks RCU enabled. Tracing variant of Tasks RCU enabled. rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 GIC physical location is 0x2c001000 rcu: srcu_init: Setting srcu_struct sizes based on contention. sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns clocksource: arm,sp804: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275 ns arch_timer: cp15 timer(s) running at 62.50MHz (virt). clocksource: arch_sys_counter: mask: 0x1ffffffffffffff max_cycles: 0x1cd42e208c, max_idle_ns: 881590405314 ns sched_clock: 57 bits at 63MHz, resolution 16ns, wraps every 4398046511096ns Switching to timer-based delay loop, resolution 16ns Console: colour dummy device 80x30 Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=625000) pid_max: default: 32768 minimum: 301 LSM: initializing lsm=lockdown,capability,landlock,yama,safesetid,tomoyo,selinux,bpf,integrity landlock: Up and running. Yama: becoming mindful. TOMOYO Linux initialized SELinux: Initializing. LSM support for eBPF active stackdepot: allocating hash table of 131072 entries via kvcalloc Mount-cache hash table entries: 4096 (order: 2, 16384 bytes, linear) Mountpoint-cache hash table entries: 4096 (order: 2, 16384 bytes, linear) CPU: Testing write buffer coherency: ok CPU0: Spectre BHB: enabling loop workaround for all CPUs CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000206 when execute [00000206] *pgd=80000080004003, *pmd=00000000 --- 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