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=-5.7 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 9E7DDC433E1 for ; Mon, 22 Jun 2020 05:31:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 830A320679 for ; Mon, 22 Jun 2020 05:31:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731141AbgFVFbM (ORCPT ); Mon, 22 Jun 2020 01:31:12 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:44328 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728473AbgFVFbL (ORCPT ); Mon, 22 Jun 2020 01:31:11 -0400 Received: by mail-il1-f197.google.com with SMTP id l11so11277652ils.11 for ; Sun, 21 Jun 2020 22:31:10 -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=aQtYKQkkKYuteeNYG+2Awb4ARDJtZy19+odkppRd09I=; b=Y2NEnfQ0FCYW0Imf6A4ZH38U8Px2kXuFV/67nxXIo/ySzlO1TbiAeYf/TPfcFDZ1SN kKeKNVf8mYpltLOI3/Xka+CjL3Ig8MqKqdGY0jA/5zatDiQv37olVfcY7X8kdy6/yaSU AfbCLMjrAsTDa22b6hHGGqlQQb7f9lZHqP+59iuO2npYuDBIftu9C0N/d5gu42xka3/2 erzVsHzEHYcR0OFiBzxwml4MTXfyoVsOHEopsnfHO5Gggt2jR9of7TWp93oF8WJNsWoa 2plSnP7ag+OsxBZzWbqYoq6ajv8ULVmc7yMIFKpItAne7eSwNo7hTL3TT1Ghyde972AE sEkg== X-Gm-Message-State: AOAM533edhIkHudXIoa6U/IryzqueMphZzMe6JUwNge+03TvDGdOLFlT h/6yKYI9RCnOQVrLm4OrCWA6fzDmjeH4MDwvmTaM+oTusdV3 X-Google-Smtp-Source: ABdhPJyW7RuXSwMiKUJB9D+k4K8gv+o3ui2u2HhK4Bkh8euurHOIiSsergkhBiOmiHVQ+ImuoHBGVz/lpI5KeeAoXX9y29sOMDKe MIME-Version: 1.0 X-Received: by 2002:a02:2c5:: with SMTP id 188mr16250393jau.3.1592803870624; Sun, 21 Jun 2020 22:31:10 -0700 (PDT) Date: Sun, 21 Jun 2020 22:31:10 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e7d00f05a8a58cdc@google.com> Subject: WARNING in tcf_chain0_head_change_cb_del 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: 7ae77150 Merge tag 'powerpc-5.8-1' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1630b4d1100000 kernel config: https://syzkaller.appspot.com/x/.config?x=d195fe572fb15312 dashboard link: https://syzkaller.appspot.com/bug?extid=438750324c752008e890 compiler: gcc (GCC) 9.0.0 20181231 (experimental) 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+438750324c752008e890@syzkaller.appspotmail.com Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 349378 pages reserved 0 pages cma reserved ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 1 PID: 3326 at kernel/locking/mutex.c:938 __mutex_lock_common kernel/locking/mutex.c:938 [inline] WARNING: CPU: 1 PID: 3326 at kernel/locking/mutex.c:938 __mutex_lock+0xd75/0x13c0 kernel/locking/mutex.c:1103 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 3326 Comm: syz-executor.2 Not tainted 5.7.0-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+0x188/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x35 kernel/panic.c:582 report_bug+0x27b/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:105 [inline] fixup_bug arch/x86/kernel/traps.c:100 [inline] do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:197 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:216 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:938 [inline] RIP: 0010:__mutex_lock+0xd75/0x13c0 kernel/locking/mutex.c:1103 Code: d2 0f 85 98 05 00 00 44 8b 05 07 44 ae 02 45 85 c0 0f 85 c1 f3 ff ff 48 c7 c6 c0 8b 2b 88 48 c7 c7 80 89 2b 88 e8 e3 78 67 f9 <0f> 0b e9 a7 f3 ff ff 65 48 8b 1c 25 00 1f 02 00 be 08 00 00 00 48 RSP: 0018:ffffc9001675f200 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815d5ba7 RDI: fffff52002cebe32 RBP: ffffc9001675f370 R08: ffff88808823a5c0 R09: 0000000000000000 R10: ffffffff899b2823 R11: fffffbfff1336504 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88809d5e9000 R15: ffff88809d5e9000 tcf_chain0_head_change_cb_del.isra.0+0x31/0x3c0 net/sched/cls_api.c:803 tcf_block_put_ext.part.0+0x25/0x80 net/sched/cls_api.c:1375 tcf_block_put_ext net/sched/cls_api.c:1373 [inline] tcf_block_put+0xb3/0x100 net/sched/cls_api.c:1388 cake_destroy+0x3f/0x80 net/sched/sch_cake.c:2667 qdisc_create+0xd93/0x1430 net/sched/sch_api.c:1295 tc_modify_qdisc+0x4c5/0x1a00 net/sched/sch_api.c:1662 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5461 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2469 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6e6/0x810 net/socket.c:2352 ___sys_sendmsg+0x100/0x170 net/socket.c:2406 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45ca59 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6a1c91fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000501a60 RCX: 000000000045ca59 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000a22 R14: 00000000004cd04d R15: 00007f6a1c9206d4 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a bot. 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