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 4B793C04A68 for ; Wed, 27 Jul 2022 12:14:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232815AbiG0MOS (ORCPT ); Wed, 27 Jul 2022 08:14:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57734 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232798AbiG0MOP (ORCPT ); Wed, 27 Jul 2022 08:14:15 -0400 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0555948C91 for ; Wed, 27 Jul 2022 05:14:11 -0700 (PDT) Received: by mail-il1-f200.google.com with SMTP id i8-20020a056e020d8800b002d931252904so11065528ilj.23 for ; Wed, 27 Jul 2022 05:14:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; 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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: WARNING in __do_softirq hrtimer: interrupt took 5497694 ns ------------[ cut here ]------------ softirq hog NET_TX WARNING: CPU: 0 PID: 5925 at kernel/softirq.c:564 __do_softirq+0x3c2/0xb44 kernel/softirq.c:564 Modules linked in: CPU: 0 PID: 5925 Comm: syz-executor.0 Not tainted 5.13.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 RIP: 0010:__do_softirq+0x3c2/0xb44 kernel/softirq.c:564 Code: 00 00 fc ff df 48 89 f8 48 c1 e8 03 80 3c 08 00 0f 85 25 07 00 00 4a 8b 34 ed e0 5b 6a 89 48 c7 c7 80 56 6a 89 e8 e9 7b 95 ff <0f> 0b e9 12 fe ff ff 65 8b 15 98 91 c1 76 83 fa 07 0f 87 94 04 00 RSP: 0018:ffffc90000007f78 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffffff8b40a0d0 RCX: 0000000000000000 RDX: ffff888018ea9c40 RSI: ffffffff815ce2a5 RDI: fffff52000000fe1 RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815c810e R11: 0000000000000000 R12: 0000000000000101 R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000081 FS: 00007fe124111700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000051e370 CR3: 0000000011c93000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_softirq.part.0+0xd9/0x130 kernel/softirq.c:460 do_softirq kernel/softirq.c:452 [inline] __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:384 spin_unlock_bh include/linux/spinlock.h:399 [inline] taprio_change+0x272d/0x4030 net/sched/sch_taprio.c:1641 taprio_init+0x52e/0x670 net/sched/sch_taprio.c:1759 qdisc_create+0x475/0x1310 net/sched/sch_api.c:1247 tc_modify_qdisc+0x4c8/0x1a50 net/sched/sch_api.c:1663 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5566 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2337 ___sys_sendmsg+0xf3/0x170 net/socket.c:2391 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2420 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe124111188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff8efb607f R14: 00007fe124111300 R15: 0000000000022000 Tested on: commit: d6765985 Revert "be2net: disable bh with spin_lock in .. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git console output: https://syzkaller.appspot.com/x/log.txt?x=11b32102080000 kernel config: https://syzkaller.appspot.com/x/.config?x=1d43f3e8616689bf dashboard link: https://syzkaller.appspot.com/bug?extid=3ba0493d523d007b3819 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 patch: https://syzkaller.appspot.com/x/patch.diff?x=15c6b35a080000