Re: [win-pv-devel] Windows 10 domU is unstable with PV Bus Driver

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

Hi Michel,

  This appears to be a new linux kernel bug. See the thread at 
https://lists.xenproject.org/archives/html/xen-devel/2017-12/msg01512.html. I 
will try to take a look a.s.a.p. I suggest you downgrade your dom0 kernel in 
the meantime.

  Cheers,

  Paul

> -----Original Message-----
> From: Michel D'HOOGE [mailto:michel.dhooge@xxxxxxxxx]
> Sent: 22 December 2017 15:34
> To: Paul Durrant <Paul.Durrant@xxxxxxxxxx>
> Cc: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> Subject: Re: [win-pv-devel] Windows 10 domU is unstable with PV Bus Driver
> 
> A follow-up to my previous mail...
> 
> I missed that report, which occurred 58s before the one I already provided.
> 
> Michel
> 
> 
> vif vif-3-0 vif3.0: Trying to unmap invalid handle! pending_idx: 0x18
> ------------[ cut here ]------------
> kernel BUG at drivers/net/xen-netback/netback.c:430!
> invalid opcode: 0000 [#1] PREEMPT SMP
> Modules linked in: nfnetlink_queue xt_physdev br_netfilter bridge stp
> llc tun openvs
>  nf_conntrack_broadcast nf_conntrack_irc nf_conntrack_h323
> nf_conntrack_ftp ts_kmp n
>  shpchp intel_pch_thermal tpm_tis tpm_tis_core thermal fan tpm ac
> battery rfkill wmi
> CPU: 3 PID: 17780 Comm: vif3.0-q2-deall Tainted: G           O
> 4.14.4-1-ARCH #1
> Hardware name: Micro-Star International Co., Ltd. GS70 6QC/MS-1776,
> BIOS E1776IMS.11
> task: ffff880050d33b00 task.stack: ffffc90040d04000
> RIP: e030:xenvif_tx_dealloc_action+0x15e/0x250 [xen_netback]
> RSP: e02b:ffffc90040d07c88 EFLAGS: 00010282
> RAX: 0000000000000000 RBX: ffffc90044c60288 RCX: 0000000000000000
> RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880189acdc98
> RBP: 00000000ffffffff R08: 0000000000000000 R09: 000000000000047c
> R10: 0000000080000000 R11: ffffffff8213536d R12: ffffc90044c56b40
> R13: 000000000000375e R14: ffffffff80000000 R15: ffffffffc04839d0
> FS:  0000000000000000(0000) GS:ffff880189ac0000(0000)
> knlGS:ffff880189ac0000
> CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 000038f4e94ff900 CR3: 000000011d9d9000 CR4: 0000000000042660
> Call Trace:
>  ? check_preempt_wakeup+0x102/0x220
>  ? _raw_spin_unlock+0xc/0x20
>  ? load_balance+0x4e1/0x9b0
>  ? __update_load_avg_se.isra.37+0x148/0x150
>  ? __update_load_avg_se.isra.37+0x148/0x150
>  ? xenvif_map_frontend_data_rings+0xf0/0xf0 [xen_netback]
>  ? update_load_avg+0x41d/0x590
>  ? xen_mc_flush+0xd8/0x1d0
>  ? xen_load_sp0+0x86/0x1b0
>  ? __switch_to+0x1dd/0x4c0
>  ? _raw_spin_unlock_irq+0x13/0x30
>  ? finish_task_switch+0x75/0x200
>  ? __schedule+0x241/0x870
>  ? xenvif_map_frontend_data_rings+0xf0/0xf0 [xen_netback]
>  xenvif_dealloc_kthread+0x7e/0x110 [xen_netback]
>  ? wait_woken+0x80/0x80
>  kthread+0x118/0x130
>  ? kthread_create_on_node+0x70/0x70
>  ret_from_fork+0x25/0x30
> Code: 81 fd ff 00 00 00 0f 86 4d ff ff ff 0f 0b 48 89 03 eb b1 49 8b
> 44 24 20 48 c7
> RIP: xenvif_tx_dealloc_action+0x15e/0x250 [xen_netback] RSP:
> ffffc90040d07c88
> ---[ end trace ac8092fb8b6c7a5c ]---
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