netdev - Re: WARNING: CPU: 3 PID: 0 at net/sched/sch_hfsc.c:1388 hfsc_dequeue+0x319/0x350 [sch

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Date:   Tue, 5 Jun 2018 08:39:48 +0200 (CEST)
From:   Marco Berizzi <pupilla@...ero.it>
To:     netdev@...r.kernel.org
Subject: Re: WARNING: CPU: 3 PID: 0 at net/sched/sch_hfsc.c:1388
 hfsc_dequeue+0x319/0x350 [sch_hfsc]

> Il 8 marzo 2018 alle 17.02 Marco Berizzi <pupilla@...ero.it> ha scritto:
> 
> > Marco Berizzi wrote:
> > 
> > Hello everyone,
> > 
> > Yesterday I got this error on a slackware linux 4.16-rc4 system
> > running as a traffic shaping gateway and netfilter nat.
> > The error has been arisen after a partial ISP network outage,
> > so unfortunately it will not trivial for me to reproduce it again.
> 
> Hello everyone,
> 
> I'm getting this error twice/day, so fortunately I'm able to
> reproduce it.

I'm getting the same error also with 4.17 (4.15.18 was
the latest working version):

[   11.445829] WARNING: CPU: 0 PID: 0 at net/sched/sch_hfsc.c:1388 hfsc_dequeue+0x319/0x350 [sch_hfsc]
[   11.445831] Modules linked in: cls_u32 sch_sfq sch_hfsc nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack nft_set_hash nft_set_rbtree nf_tables nfnetlink ext2 hid_generic usbhid hid uhci_hcd ehci_pci ehci_hcd usbcore intel_cstate usb_common bnx2 rtc_cmos loop
[   11.445854] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.17.0 #1
[   11.445856] Hardware name: HP ProLiant DL360 G7, BIOS P68 08/16/2010
[   11.445859] RIP: 0010:hfsc_dequeue+0x319/0x350 [sch_hfsc]
[   11.445861] RSP: 0018:ffff88081fa03b20 EFLAGS: 00010246
[   11.445863] RAX: 0000000000000000 RBX: ffff8807f5055988 RCX: 0000000000000018
[   11.445864] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff8807f5055c80
[   11.445866] RBP: 000000000aa8e4a6 R08: 0000000000000001 R09: 0000000000000000
[   11.445867] R10: ffff8807fbe41868 R11: 0000000000000001 R12: ffff8807f5055800
[   11.445869] R13: ffff8807f5055c80 R14: ffff8807f7f12800 R15: ffff8807f5055800
[   11.445871] FS:  0000000000000000(0000) GS:ffff88081fa00000(0000) knlGS:0000000000000000
[   11.445872] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.445874] CR2: 00007fdd5de915f8 CR3: 0000000001a0a000 CR4: 00000000000006b0
[   11.445875] Call Trace:
[   11.445878]  <IRQ>
[   11.445884]  __qdisc_run+0xbe/0x520
[   11.445890]  __dev_queue_xmit+0x387/0x740
[   11.445895]  ? get_nohz_timer_target+0x8c/0x150
[   11.445897]  ? eth_header+0x20/0xb0
[   11.445900]  ? neigh_update+0x34b/0x6b0
[   11.445902]  neigh_update+0x34b/0x6b0
[   11.445907]  arp_process+0x23a/0x780
[   11.445911]  __netif_receive_skb_core+0x338/0xaf0
[   11.445915]  ? __alloc_pages_nodemask+0x99/0x110
[   11.445918]  ? netif_receive_skb_internal+0x2e/0xc0
[   11.445920]  netif_receive_skb_internal+0x2e/0xc0
[   11.445923]  napi_gro_receive+0x70/0x90
[   11.445928]  bnx2_poll_work+0x777/0x1300 [bnx2]
[   11.445932]  ? check_preempt_curr+0x4b/0x80
[   11.445935]  bnx2_poll+0x44/0x210 [bnx2]
[   11.445938]  net_rx_action+0x1ca/0x2b0
[   11.445942]  __do_softirq+0xd4/0x1c9
[   11.445947]  irq_exit+0xa3/0xb0
[   11.445949]  do_IRQ+0x45/0xc0
[   11.445952]  common_interrupt+0xf/0xf
[   11.445953]  </IRQ>
[   11.445958] RIP: 0010:mwait_idle+0x45/0x70
[   11.445959] RSP: 0018:ffffffff81a03ef0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffdb
[   11.445961] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   11.445963] RDX: 0000000000000000 RSI: ffff88081fa19060 RDI: ffff88081fa1b5c0
[   11.445964] RBP: ffffffff81a10480 R08: 0000000000000000 R09: 00000002bbeff5c0
[   11.445965] R10: 00000000000002a6 R11: 0000000000000c00 R12: ffffffff81a10480
[   11.445967] R13: ffffffff81c770a0 R14: 0000000000000000 R15: 0000000000000000
[   11.445971]  do_idle+0x86/0xf0
[   11.445974]  cpu_startup_entry+0x14/0x20
[   11.445977]  start_kernel+0x31d/0x325
[   11.445981]  secondary_startup_64+0xa5/0xb0
[   11.445982] Code: 48 89 c5 e9 06 fe ff ff 48 8b b3 88 00 00 00 48 c7 c7 60 70 08 a0 e8 f7 7c 2c e1 31 c0 e9 c0 fe ff ff 48 85 f6 0f 85 75 ff ff ff <0f> 0b 31 f6 e9 70 ff ff ff 48 89 c6 e9 64 ff ff ff 48 85 db 0f 
[   11.446021] ---[ end trace 977c540fdfcce8ae ]---