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 CF149C46467 for ; Sat, 7 Jan 2023 23:58:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232859AbjAGX6V (ORCPT ); Sat, 7 Jan 2023 18:58:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229691AbjAGX6T (ORCPT ); Sat, 7 Jan 2023 18:58:19 -0500 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BF33C1A048 for ; Sat, 7 Jan 2023 15:58:18 -0800 (PST) Received: by mail-io1-f71.google.com with SMTP id o22-20020a6b5a16000000b006e2d564944aso2715933iob.7 for ; Sat, 07 Jan 2023 15:58:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=7559gJJ9z85wlOl7jqQosrZ1Ew+LqnNTS0vScsJZILk=; b=dH/68anAi1LqrGMWMoSVuK4YKQradvynguwiTwaCEQuk5+2cqjGbBKpmwaGOoGZ95a Vo42Kq4f77lyZnMBiEeZoIAG7Ta2lTA39JPe8AyLtTQwXN4UjJfpErrPvEUb/zaHiiad xvQyaKvVRlicJNuPSI1EM5oNsRXty88R1qpmCfSNy+7RL1SzvDcEU65HwxQLJZFPhe8B 8J6L4eJ7n3fAfk1dOKAutwzDPNAG6tF1xAKRbTGa1U+M/ON2vA5g10S0jdEusJXhMQVA mvhmV/ZqV31zMd5XoZbBnTVFHEh6Fqg3QoivfZXZyZXwUQTYawQEExoT20lkywuOQKuj /OPg== X-Gm-Message-State: AFqh2kqCBzpXdcvM630YsmSKWuhBW4BrTLVVBtDAiasLGoflbW6omgcc n0RWJv4jicQc/E+yGIlqD4IhgzHH/04uCflU2OpQmcZmGLat X-Google-Smtp-Source: AMrXdXsCTUPPAGVcAKtLQRIR2TYSUDls05w0SqRvTxh2CWDoYKkbaF+YGIuU7gFiPTERMrbZDJnlEVDgZ67Y+LjtdzmEOVeoxt0H MIME-Version: 1.0 X-Received: by 2002:a02:9f97:0:b0:39d:7413:1ac1 with SMTP id a23-20020a029f97000000b0039d74131ac1mr4104951jam.75.1673135898074; Sat, 07 Jan 2023 15:58:18 -0800 (PST) Date: Sat, 07 Jan 2023 15:58:18 -0800 In-Reply-To: <20230107234052.5103-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000dda7ab05f1b54ec9@google.com> Subject: Re: [syzbot] BUG: unable to handle kernel paging request in p9_client_disconnect From: syzbot To: hdanton@sina.com, 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 has tested the proposed patch but the reproducer is still triggering an issue: BUG: unable to handle kernel paging request in rhltable_lookup Unable to handle kernel paging request at virtual address ffff00082200ccf8 Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005 CM = 0, WnR = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001c54db000 [ffff00082200ccf8] pgd=180000023fff8003, p4d=180000023fff8003, pud=0000000000000000 Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 13 Comm: kworker/0:1 Not tainted 6.1.0-rc2-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: ipv6_addrconf addrconf_dad_work pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : rht_ptr_rcu include/linux/rhashtable.h:369 [inline] pc : __rhashtable_lookup include/linux/rhashtable.h:599 [inline] pc : rhltable_lookup+0xd4/0x398 include/linux/rhashtable.h:688 lr : rht_bucket include/linux/rhashtable.h:290 [inline] lr : __rhashtable_lookup include/linux/rhashtable.h:597 [inline] lr : rhltable_lookup+0xc8/0x398 include/linux/rhashtable.h:688 sp : ffff800008003d60 x29: ffff800008003d80 x28: ffff80000d95e000 x27: 0000000000000000 x26: 0000000000000002 x25: 0000000000000000 x24: ffff00082200ccf8 x23: ffff80000d95e000 x22: ffff00082200ccf9 x21: ffff0000c920b800 x20: ffff0000c93597b0 x19: ffff0000cb81b834 x18: 00000000000000c9 x17: ffff8001f1cee000 x16: 0000000000000101 x15: 0000000000000100 x14: 0000000000000000 x13: 000000000000000c x12: ffff80000d65f7d0 x11: ff8080000bce0278 x10: 0000000000000000 x9 : ffff80000bce0278 x8 : ffff00082200cc78 x7 : 0000000000000000 x6 : ffff80000bcd9c94 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: rhltable_lookup+0xd4/0x398 include/linux/rhashtable.h:688 sta_info_hash_lookup net/mac80211/sta_info.c:195 [inline] sta_info_get_by_addrs+0x64/0xf8 net/mac80211/sta_info.c:320 ieee80211_tx_status+0xd8/0x1ac net/mac80211/status.c:1096 ieee80211_tasklet_handler+0x5c/0x110 net/mac80211/main.c:319 tasklet_action_common+0x1d4/0x248 tasklet_action+0x30/0x3c kernel/softirq.c:818 _stext+0x168/0x37c ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79 call_on_irq_stack+0x2c/0x54 arch/arm64/kernel/entry.S:889 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:84 do_softirq+0xac/0x108 kernel/softirq.c:472 __local_bh_enable_ip+0x18c/0x1a4 kernel/softirq.c:396 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33 rcu_read_unlock_bh include/linux/rcupdate.h:808 [inline] ip6_finish_output2+0xa1c/0xbec net/ipv6/ip6_output.c:135 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline] ip6_finish_output+0x448/0x4c4 net/ipv6/ip6_output.c:206 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip6_output+0x180/0x2dc net/ipv6/ip6_output.c:227 dst_output include/net/dst.h:445 [inline] NF_HOOK include/linux/netfilter.h:302 [inline] ndisc_send_skb+0x6d8/0xa18 net/ipv6/ndisc.c:508 ndisc_send_ns+0x7c/0xf0 net/ipv6/ndisc.c:666 addrconf_dad_work+0x2c8/0x504 net/ipv6/addrconf.c:4171 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Code: 97171ba7 8b384ea8 91020118 b2400316 (f940031a) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97171ba7 bl 0xfffffffffc5c6e9c 4: 8b384ea8 add x8, x21, w24, uxtw #3 8: 91020118 add x24, x8, #0x80 c: b2400316 orr x22, x24, #0x1 * 10: f940031a ldr x26, [x24] <-- trapping instruction Tested on: commit: 247f34f7 Linux 6.1-rc2 git tree: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=14cef5e6480000 kernel config: https://syzkaller.appspot.com/x/.config?x=fa9bed8d6a8992a0 dashboard link: https://syzkaller.appspot.com/bug?extid=ea8b28e8dca42fc3bcbe compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 patch: https://syzkaller.appspot.com/x/patch.diff?x=17c87de6480000