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 X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49A0DC433E2 for ; Thu, 10 Sep 2020 09:30:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 14A17206A5 for ; Thu, 10 Sep 2020 09:30:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730433AbgIJJay (ORCPT ); Thu, 10 Sep 2020 05:30:54 -0400 Received: from mail-io1-f79.google.com ([209.85.166.79]:35719 "EHLO mail-io1-f79.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726600AbgIJJ3S (ORCPT ); Thu, 10 Sep 2020 05:29:18 -0400 Received: by mail-io1-f79.google.com with SMTP id e83so3897131ioa.2 for ; Thu, 10 Sep 2020 02:29:17 -0700 (PDT) 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:message-id:subject:from:to; bh=wbQ5hEj6rADmWVMRkDe2eqg2V1dhGor68kn9Ygqa8iA=; b=evYPeUu8pN5Meko57UhedaPW6uKX1A0aOE3Di8cy+iDRupwezQ8eCxmHB2jcKO+fls XLAaKO9r6blt/JaU3qgoHvtT8en1bnakfr6a8Goj8/6KuU2BQtHlLethFgc1mWaeQ9U/ sv0B2PxZcZZMGN6kSDUmXnN1Nf1GJ4CRLzR5/FAH44bdRzLgj1pk06JYWCShA48qE2JX s6MxU0a02YkT5VhE1vlQZ9bPtsq7tR9klQ66wTJELmlqXz/gQ5uYw6BXuI65V7dQZi7m TqaXIDdRc5K7yxp36wQGSmsB+3D6L3ykocGYrT+X5HSFKXY16b+XoME72okiczLiB+7Y SThQ== X-Gm-Message-State: AOAM5306PBMPF9tqJHTuAX1rIQyvU0RDJeu31FlCbycoqOEyr7V1Up+n ihp85PQzcXJhY3OL2TswL15e72YGVdHH6xXn3tmaztbslK6V X-Google-Smtp-Source: ABdhPJysA8PxfONSscctagFdb07Pwycnr+IyT1EJoVzpbEd5spAORPGz6sq4E1/U597TkUzi0Uji6askr1L0y35jAufu+PZB7B5v MIME-Version: 1.0 X-Received: by 2002:a05:6e02:d2:: with SMTP id r18mr6888793ilq.303.1599730157627; Thu, 10 Sep 2020 02:29:17 -0700 (PDT) Date: Thu, 10 Sep 2020 02:29:17 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c82fe505aef233c6@google.com> Subject: WARNING in bpf_raw_tp_link_fill_link_info From: syzbot To: andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, hawk@kernel.org, john.fastabend@gmail.com, kafai@fb.com, kpsingh@chromium.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 7fb5eefd selftests/bpf: Fix test_sysctl_loop{1, 2} failure.. git tree: bpf-next console output: https://syzkaller.appspot.com/x/log.txt?x=1424fdb3900000 kernel config: https://syzkaller.appspot.com/x/.config?x=b6856d16f78d8fa9 dashboard link: https://syzkaller.appspot.com/bug?extid=976d5ecfab0c7eb43ac3 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a1f411900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10929c11900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+976d5ecfab0c7eb43ac3@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6854 at include/linux/thread_info.h:150 check_copy_size include/linux/thread_info.h:150 [inline] WARNING: CPU: 0 PID: 6854 at include/linux/thread_info.h:150 copy_to_user include/linux/uaccess.h:167 [inline] WARNING: CPU: 0 PID: 6854 at include/linux/thread_info.h:150 bpf_raw_tp_link_fill_link_info+0x306/0x350 kernel/bpf/syscall.c:2661 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 6854 Comm: syz-executor574 Not tainted 5.9.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x4a kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:check_copy_size include/linux/thread_info.h:150 [inline] RIP: 0010:copy_to_user include/linux/uaccess.h:167 [inline] RIP: 0010:bpf_raw_tp_link_fill_link_info+0x306/0x350 kernel/bpf/syscall.c:2661 Code: 41 bc ea ff ff ff e9 35 ff ff ff 4c 89 ff e8 41 66 33 00 e9 d0 fd ff ff 4c 89 ff e8 a4 66 33 00 e9 06 ff ff ff e8 ca ed f2 ff <0f> 0b eb 94 48 89 ef e8 2e 66 33 00 e9 65 fd ff ff e8 24 66 33 00 RSP: 0018:ffffc900051c7bd0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffc900051c7c60 RCX: ffffffff818179d6 RDX: ffff88808b490000 RSI: ffffffff81817a96 RDI: 0000000000000006 RBP: 0000000000000019 R08: 0000000000000000 R09: ffffc900051c7c7f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000019 R13: 0000000000001265 R14: ffffffff8986ecc0 R15: ffffc900051c7c78 bpf_link_get_info_by_fd kernel/bpf/syscall.c:3626 [inline] bpf_obj_get_info_by_fd+0x43a/0xc40 kernel/bpf/syscall.c:3664 __do_sys_bpf+0x1906/0x4b30 kernel/bpf/syscall.c:4237 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x4405f9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff47155808 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004405f9 RDX: 0000000000000010 RSI: 00000000200000c0 RDI: 000000000000000f RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401e00 R13: 0000000000401e90 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches