From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f77.google.com (mail-oo1-f77.google.com [209.85.161.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3048222097 for ; Sat, 13 Dec 2025 15:35:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765640132; cv=none; b=LwE4qMSC9E/7K/FoKf660noTV+dgr7vBFfvoIJRE4FBwEVTJDKLhWhMSY3pmGtIFp6AWWJ0Xztltp2e7SBBBIVFF67OGGiMvRmeLirfvad810nRU7+dRSUDTT8QjAfJ0DD8SBY1QeoPl/AfT/BIDyQc2rdh982/oeCCrV1k+FJk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765640132; c=relaxed/simple; bh=TqLXWW2CIy170mpOfkT7Zh90WqpuAuB7C5yGRFiw3CI=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=d/wAPpGKDq+bbDtEqbHIy1jcdBC7z/J/0s+tfY4LgYeUWk7BpC6ExHp+8ayhDkhXWjhb9v2lcNVcoAyRAdLbQz2vHNhntp92HoIfP0MB7zo8oB00gAC+HeW+SZ3Co908Mp3l+McbM45Zit9pZ6ob41OuERXXfPrizIvKoTRx1m8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.161.77 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oo1-f77.google.com with SMTP id 006d021491bc7-65997ee5622so2843365eaf.1 for ; Sat, 13 Dec 2025 07:35:30 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1765640130; x=1766244930; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=sOjX1vN9wjS9m8uU4U9yGtbFR55FuYbttl3huY4iNIg=; b=mPZqhQ9rj4WJpediz5yb5HZny69QouTwPSK0uW4pIzLEcD43/w8PNUHwRxAwiWiyEs p48S7XM4XSGyu89Ew5AwD6EyEr103lONMGnRPJA6xePsFVnpjK1tKlh6OBgQAaVWPAfA Dy7dGyTHmbe5NmWcOOojXIRKg0+PK8k145ncYVHjMn1f73X/EZuDHCfzXpnJZ8e6IHnu 276a4beReOm4bJO/+NLVE4EW6s2g95iTvhpkwT59hnmz6rNNQEj9wwkgAU3QvcbuLBnr GRTBOFqLMuf8D01uM8erFcHsiaxZcto0vvGra++Y8QLVyk0IHdxb8q58zzaMUvoLh5qK ZXaQ== X-Forwarded-Encrypted: i=1; AJvYcCXiBitkx904U/DZXqdAFczR2GZFZKT4kh1JPmkwFrtCpPV+ETOpz5Wv8oWBDoav9+WYw5jQwaA=@vger.kernel.org X-Gm-Message-State: AOJu0Yy8hvSU/6L7heSeRXKO7GqkPExicPkVkbmsA1Q/GSnteGvXK7yZ 3t1YyRtdJY/5mCRnizdHWESU65itmPabPtnRTChyAag0j0gx3ec16OHJ+lNwLsgxSzpqarM33hd HIKtjyPCJyYGAV+LibLg3dA/bAzIyDUgJaAYJDlNZTn3OK1Bfj4vlck/Ir8A= X-Google-Smtp-Source: AGHT+IFU6hmVDEuFLiJIe6VLXEcwNYgKFEwGhqcV0ubZdicyMpQGoZ4wqfiFCXqnCZJ01nuZBBnnOySXx/4q4GXFlm+RlHEnj1/F Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4b84:b0:659:9a49:8e92 with SMTP id 006d021491bc7-65b451879b6mr2677818eaf.22.1765640130294; Sat, 13 Dec 2025 07:35:30 -0800 (PST) Date: Sat, 13 Dec 2025 07:35:30 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <693d87c2.050a0220.326d2b.0004.GAE@google.com> Subject: [syzbot] [net?] BUG: unable to handle kernel paging request in tcf_idrinfo_destroy From: syzbot To: davem@davemloft.net, edumazet@google.com, horms@kernel.org, jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, xiyou.wangcong@gmail.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 05c93f3395ed Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=16789eb4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3b5338ad1e59a06c dashboard link: https://syzkaller.appspot.com/bug?extid=8f1c492ffa4644ff3826 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/6b5c913e373c/disk-05c93f33.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/15e75f1266ef/vmlinux-05c93f33.xz kernel image: https://storage.googleapis.com/syzbot-assets/dd930129c578/Image-05c93f33.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8f1c492ffa4644ff3826@syzkaller.appspotmail.com Unable to handle kernel paging request at virtual address dfff80000000001c KASAN: null-ptr-deref in range [0x00000000000000e0-0x00000000000000e7] 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, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [dfff80000000001c] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 252 Comm: kworker/u8:4 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: netns cleanup_net pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : tc_act_in_hw include/net/pkt_cls.h:288 [inline] pc : tcf_idrinfo_destroy+0xac/0x280 net/sched/act_api.c:943 lr : tcf_idrinfo_destroy+0x9c/0x280 net/sched/act_api.c:942 sp : ffff80009bc477e0 x29: ffff80009bc47850 x28: 0000000000000001 x27: 1ffff0001251a7a6 x26: 0000000000000000 x25: ffff80009bc477e0 x24: 1ffff00013788efc x23: dfff800000000000 x22: 00000000000000e0 x21: fffffffffffffff0 x20: ffff8000928d3d30 x19: ffff0000d7040000 x18: 00000000ffffffff x17: ffff8000894c2344 x16: ffff80008ad6b188 x15: 0000000000000002 x14: 1ffff00013788ee6 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700013788ee8 x10: 0000000000000000 x9 : 2310c4dc04add800 x8 : 000000000000001c x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000010 x2 : 0000000000000000 x1 : 0000000000000000 x0 : fffffffffffffff0 Call trace: tc_act_in_hw include/net/pkt_cls.h:288 [inline] (P) tcf_idrinfo_destroy+0xac/0x280 net/sched/act_api.c:943 (P) tc_action_net_exit include/net/act_api.h:183 [inline] gact_exit_net+0x9c/0x104 net/sched/act_gact.c:310 ops_exit_list net/core/net_namespace.c:205 [inline] ops_undo_list+0x428/0x7ec net/core/net_namespace.c:252 cleanup_net+0x3f8/0x6dc net/core/net_namespace.c:695 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 Code: b4000b40 9103c016 aa0003f5 d343fec8 (38f76908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: b4000b40 cbz x0, 0x168 4: 9103c016 add x22, x0, #0xf0 8: aa0003f5 mov x21, x0 c: d343fec8 lsr x8, x22, #3 * 10: 38f76908 ldrsb w8, [x8, x23] <-- trapping instruction --- 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 report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup