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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 4901BC35DF2 for ; Tue, 25 Feb 2020 05:43:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2ABAB20CC7 for ; Tue, 25 Feb 2020 05:43:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726136AbgBYFnP (ORCPT ); Tue, 25 Feb 2020 00:43:15 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:40657 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725788AbgBYFnP (ORCPT ); Tue, 25 Feb 2020 00:43:15 -0500 Received: by mail-il1-f198.google.com with SMTP id m18so23051587ill.7 for ; Mon, 24 Feb 2020 21:43:13 -0800 (PST) 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=hMFIzaD34cEyiy4pe9ZVgsYgncv2dmIkFd8NRXrfNIw=; b=ar0BZEcPR5Br4GqWEFUtrCRXPemJV1afjqCwvis1P4+FV4pZ3zEQ+OvUsiR7bU9Omk dQNBs0VrdSKz+epKlX7LCx+jlsn/D0WJZfCuVGTwF4/KIqGXUamcJ3HUv01nFvsla1gH K2k6uDvMRycT4vtV05t4RnT3aF7k/0Ik9oxO+u00lsCJiiH2jBOy4ij5AuhI3gaFJIww uU0pYM6iljeqOQo/ToFQQzYwQSvLDQR8OiVmEUoiqsmjwCQOyoV9gwzWkbbWzxInDHSv dri1yb7H6P32OqNDzrGgnV1K3Odsk50PvaN9yz0wq2Q4sIbNAFzAiQMXqePZDXot3zlP OMaQ== X-Gm-Message-State: APjAAAWn+vqzTX9UFwiPWXIVTVswsPaQZgYW9nNF1H90v2Tj+zspeWSr CTI/cCs4JkQnhgij0isqe/5VKeoZJi/BI69ppuSXwnYK7wuA X-Google-Smtp-Source: APXvYqyX+8bh4pqGwUyfTDN7ausdfx6o3oaqgOKmF9c/aUSjuAI8sb9sMQDpMWqe/nIzsmjZWo8ldZYW7CfFCUz71Ymm9LWtZcy3 MIME-Version: 1.0 X-Received: by 2002:a02:b38f:: with SMTP id p15mr56855445jan.56.1582609393220; Mon, 24 Feb 2020 21:43:13 -0800 (PST) Date: Mon, 24 Feb 2020 21:43:13 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b380de059f5ff6aa@google.com> Subject: WARNING: ODEBUG bug in tcindex_destroy_work (3) From: syzbot To: davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, xiyou.wangcong@gmail.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 crash on: HEAD commit: d2eee258 Merge tag 'for-5.6-rc2-tag' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17fd8931e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=3e57a6b450fb9883 dashboard link: https://syzkaller.appspot.com/bug?extid=46f513c3033d592409d2 compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+46f513c3033d592409d2@syzkaller.appspotmail.com ------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: work_struct hint: tcindex_destroy_rexts_work+0x0/0xd0 net/sched/cls_tcindex.c:57 WARNING: CPU: 1 PID: 21 at lib/debugobjects.c:488 debug_print_object lib/debugobjects.c:485 [inline] WARNING: CPU: 1 PID: 21 at lib/debugobjects.c:488 __debug_check_no_obj_freed lib/debugobjects.c:967 [inline] WARNING: CPU: 1 PID: 21 at lib/debugobjects.c:488 debug_check_no_obj_freed+0x468/0x620 lib/debugobjects.c:998 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.6.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: tc_filter_workqueue tcindex_destroy_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fb/0x318 lib/dump_stack.c:118 panic+0x264/0x7a9 kernel/panic.c:221 __warn+0x209/0x210 kernel/panic.c:582 report_bug+0x1b6/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0xcf/0x1c0 arch/x86/kernel/traps.c:267 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:debug_print_object lib/debugobjects.c:485 [inline] RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:967 [inline] RIP: 0010:debug_check_no_obj_freed+0x468/0x620 lib/debugobjects.c:998 Code: 08 48 89 df e8 f9 27 0f fe 4c 8b 03 48 c7 c7 75 eb f0 88 48 c7 c6 8f dc ee 88 4c 89 e2 44 89 f9 4d 89 e9 31 c0 e8 28 c4 a3 fd <0f> 0b 48 ba 00 00 00 00 00 fc ff df 4c 8b 6d b0 ff 05 b6 df c4 05 RSP: 0018:ffffc90000dd7be0 EFLAGS: 00010046 RAX: a8ee08c59d207d00 RBX: ffffffff892d11c0 RCX: ffff8880a9bf6580 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90000dd7c78 R08: ffffffff81600324 R09: ffffed1015d64592 R10: ffffed1015d64592 R11: 0000000000000000 R12: ffffffff88f4c8da R13: ffffffff869b5000 R14: ffff88802cc7c000 R15: 0000000000000000 kfree+0xff/0x220 mm/slab.c:3756 tcindex_destroy_work+0x3e/0x70 net/sched/cls_tcindex.c:231 process_one_work+0x7f5/0x10f0 kernel/workqueue.c:2264 worker_thread+0xbbc/0x1630 kernel/workqueue.c:2410 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a bot. 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