Re: [Xen-users] [Xen-devel] ENC: Failed to insert 'xen_evtchn': No such device

[Carlos Gustavo Ramirez Rodriguez <carlosgrr@xxxxxxxxx>]

>>First Problem:
>>...
>You do not have /proc/xen/privcmd available in your environment. Mount xenfs

How can I mount the XENFS? Is there any guide I should follow?

>>Second Problem:
>>...
>What extra information do you get by following the instruction?

As already shown at the e-mails that started this issue:

"
root@carlos:~# systemctl status systemd-modules-load.service
â systemd-modules-load.service - Load Kernel Modules
ÂÂ Loaded: loaded (/lib/systemd/system/systemd-modules-load.service; static; vendor preset: enabled)
ÂÂ Active: failed (Result: exit-code) since Qua 2015-04-01 15:37:58 BRT; 54min ago
ÂÂÂÂ Docs: man:systemd-modules-load.service(8)
ÂÂÂÂÂÂÂÂÂÂ man:modules-load.d(5)
 Process: 668 ExecStart=/lib/systemd/systemd-modules-load (code=exited, status=1/FAILURE)
ÂMain PID: 668 (code=exited, status=1/FAILURE)

Abr 01 15:37:58 carlos systemd[1]: Starting Load Kernel Modules...
Abr 01 15:37:58 carlos systemd-modules-load[668]: Module 'fuse' is builtin
Abr 01 15:37:58 carlos systemd-modules-load[668]: Failed to find module 'evt...
Abr 01 15:37:58 carlos systemd[1]: systemd-modules-load.service: main proc...RE
Abr 01 15:37:58 carlos systemd[1]: Failed to start Load Kernel Modules.
Abr 01 15:37:58 carlos systemd[1]: Unit systemd-modules-load.service enter...e.
Abr 01 15:37:58 carlos systemd[1]: systemd-modules-load.service failed.
Hint: Some lines were ellipsized, use -l to show in full.
"

>>Third Problem:
>>...
>I don't see how this could plausibly be a Xen issue.

Ok, thanks for the reply, I was just checking since all of this problems started almost at the same time...

>>Fourth Problem:

>>...
>b43 (whatever it is) appears to be mad and is polling while in an rx interrupt handler. It also appears as if your CPU is too hot and is being thermally throttled.

Any way I can find out how to I fix this issue, since my CPU is not hot at all, running "sensors" from terminal:

"
root@carlos:~# sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:ÂÂÂÂÂÂÂ +27.8ÂCÂ (crit = +106.0ÂC)
temp2:ÂÂÂÂÂÂÂ +29.8ÂCÂ (crit = +106.0ÂC)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:Â +51.0ÂCÂ (high = +85.0ÂC, crit = +105.0ÂC)
Core 0:ÂÂÂÂÂÂÂÂ +45.0ÂCÂ (high = +85.0ÂC, crit = +105.0ÂC)
Core 1:ÂÂÂÂÂÂÂÂ +51.0ÂCÂ (high = +85.0ÂC, crit = +105.0ÂC)
Core 2:ÂÂÂÂÂÂÂÂ +46.0ÂCÂ (high = +85.0ÂC, crit = +105.0ÂC)
Core 3:ÂÂÂÂÂÂÂÂ +51.0ÂCÂ (high = +85.0ÂC, crit = +105.0ÂC)

nouveau-pci-0100
Adapter: PCI adapter
fan1:ÂÂÂÂÂÂÂ 1170 RPM
temp1:ÂÂÂÂÂÂÂ +41.0ÂCÂ (high = +95.0ÂC, hyst =Â +3.0ÂC)
ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ (crit = +105.0ÂC, hyst =Â +5.0ÂC)
ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ (emerg = +135.0ÂC, hyst =Â +5.0ÂC)
"

2015-04-01 16:14 GMT-03:00 Andrew Cooper <andrew.cooper3@xxxxxxxxxx>:

On 01/04/15 19:55, Carlos Gustavo Ramirez Rodriguez wrote:

Hello DEVs, can anyone help me?

Ian Campbell pointed me that maybe you could help me, here is the link to the last e-mail line that started this problem fixing:
http://lists.xenproject.org/archives/html/xen-users/2015-04/msg00009.html

A brief summary of my current problems after XEN installation:

First Problem: XL "Anything", be it INFO, TOP, UPTIME, whatever, returns:

"
xc: error: Could not obtain handle on privileged command interface (2 = No such file or directory): Internal error
libxl: error: libxl.c:109:libxl_ctx_alloc: cannot open libxc handle: No such file or directory
cannot init xl context
"

You do not have /proc/xen/privcmd available in your environment. Mount xenfs

(note to self - dust off my patch which makes that error message more useful)

Second Problem:
My boot.log is showing:

"
[ [1;31mFAILED [0m] Failed to start Load Kernel Modules.
See "systemctl status systemd-modules-load.service" for details.
"

What extra information do you get by following the instruction?

Third Problem:

Today doing an apt-get update and apt-get dist-upgrade to see if there was any major fix on stuff... and probably I am with a Regression in hands:

"
Error found when loading /etc/profile:
/etc/profile.d/cedilla-brazil.sh: linha 21: [: n?mero excessivo de
argumentos

As a result the session will not be configured correctly
You should fix the problem as soon as feasible.

"

Also trying to run "sudo su -" on terminal I get a message saying I have too much arguments for (su) but since it appears related to this problem above, I consider both the same.

I don't see how this could plausibly be a Xen issue.

***I have already sent an e-mail to the Ubuntu mailing list about this problem...

Fourth Problem:
I am receiving KERNEL OOPS messages saying my #4 processor is pausing:
"
NMI watchdog: BUG: soft lockup - CPU#4 stuck for 23s! [irq/19-b43:1082]
"

that is a strip from syslog, showing that message:
"
Apr 1 15:01:34 carlos kernel: [ 1829.176231] [<ffffffff817c5cf5>] __mutex_lock_slowpath+0x95/0x100
Apr 1 15:01:34 carlos kernel: [ 1829.176233] [<ffffffff817c5d83>] mutex_lock+0x23/0x40
Apr 1 15:01:34 carlos kernel: [ 1829.176235] [<ffffffffc0df47f3>] b43_periodic_work_handler+0x33/0x190 [b43]
Apr 1 15:01:34 carlos kernel: [ 1829.176237] [<ffffffff8108eb48>] process_one_work+0x158/0x430
Apr 1 15:01:34 carlos kernel: [ 1829.176238] [<ffffffff8108f5db>] worker_thread+0x5b/0x530
Apr 1 15:01:34 carlos kernel: [ 1829.176239] [<ffffffff8108f580>] ? rescuer_thread+0x3a0/0x3a0
Apr 1 15:01:34 carlos kernel: [ 1829.176241] [<ffffffff81094679>] kthread+0xc9/0xe0
Apr 1 15:01:34 carlos kernel: [ 1829.176243] [<ffffffff810945b0>] ? kthread_create_on_node+0x1c0/0x1c0
Apr 1 15:01:34 carlos kernel: [ 1829.176244] [<ffffffff817c8198>] ret_from_fork+0x58/0x90
Apr 1 15:01:34 carlos kernel: [ 1829.176246] [<ffffffff810945b0>] ? kthread_create_on_node+0x1c0/0x1c0
Apr 1 15:01:36 carlos thermald[910]: Dropped below poll threshold
Apr 1 15:01:36 carlos thermald[910]: thd_trip_cdev_state_reset
Apr 1 15:01:36 carlos thermald[910]: thd_trip_cdev_state_reset
Apr 1 15:01:36 carlos thermald[910]: thd_trip_cdev_state_reset index 5:Processor
Apr 1 15:01:36 carlos thermald[910]: thd_trip_cdev_state_reset index 13:intel_powerclamp
Apr 1 15:01:36 carlos thermald[910]: thd_trip_cdev_state_reset index 14:rapl_controller
Apr 1 15:01:36 carlos thermald[910]: thd_trip_cdev_state_reset
Apr 1 15:01:36 carlos thermald[910]: thd_trip_cdev_state_reset index 5:Processor
Apr 1 15:01:36 carlos thermald[910]: thd_trip_cdev_state_reset index 13:intel_powerclamp
Apr 1 15:01:36 carlos thermald[910]: thd_trip_cdev_state_reset index 14:rapl_controller
Apr 1 15:01:40 carlos thermald[910]: Read set point 0
Apr 1 15:01:40 carlos thermald[910]: Set : 94000, 74000, 5, 0, 0
Apr 1 15:01:42 carlos kernel: [ 1837.163940] NMI watchdog: BUG: soft lockup - CPU#4 stuck for 22s! [irq/19-b43:1082]
Apr 1 15:01:42 carlos kernel: [ 1837.163944] Modules linked in: rfcomm bnep nls_iso8859_1 arc4 b43 mac80211 cfg80211 snd_hda_codec_hdmi ssb eeepc_wmi asus_wmi sparse_keymap snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_controller intel_rapl iosf_mbi snd_hda_codec x86_pkg_temp_thermal intel_powerclamp snd_hwdep coretemp snd_pcm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel uvcvideo aesni_intel snd_seq_midi videobuf2_vmalloc snd_seq_midi_event btusb aes_x86_64 videobuf2_memops videobuf2_core lrw snd_rawmidi gf128mul v4l2_common glue_helper ablk_helper nouveau bluetooth snd_seq cryptd videodev cypress_m8 media serio_raw joydev snd_seq_device i915 usbserial snd_timer mxm_wmi bcma lpc_ich ttm drm_kms_helper snd drm mei_me soundcore mei i2c_algo_bit video intel_smartconnect ie31200_edac wmi shpchp edac_core mac_hid xen_pciback xen_netback xen_blkback xen_gntalloc xen_gntdev xen_evtchn parport_pc ppdev lp parport autofs4 btrfs hid_generic usbhid hid raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq e1000e raid1 psmouse ptp r8169 mii raid0 pps_core ahci multipath libahci linear
Apr 1 15:01:42 carlos kernel: [ 1837.164002] CPU: 4 PID: 1082 Comm: irq/19-b43 Tainted: G L 3.19.0-10-generic #10-Ubuntu
Apr 1 15:01:42 carlos kernel: [ 1837.164004] Hardware name: System manufacturer System Product Name/P8Z77-V DELUXE, BIOS 2104 08/13/2013
Apr 1 15:01:42 carlos kernel: [ 1837.164005] task: ffff8808018809d0 ti: ffff880802c88000 task.ti: ffff880802c88000
Apr 1 15:01:42 carlos kernel: [ 1837.164006] RIP: e030:[<ffffffff8101e1b6>] [<ffffffff8101e1b6>] native_read_tsc+0x6/0x20
Apr 1 15:01:42 carlos kernel: [ 1837.164011] RSP: e02b:ffff880802c8bd00 EFLAGS: 00000246
Apr 1 15:01:42 carlos kernel: [ 1837.164012] RAX: 00000000a08f0862 RBX: 00000000a08ef87e RCX: 00000000a08f082d
Apr 1 15:01:42 carlos kernel: [ 1837.164013] RDX: 00000000000005b2 RSI: 0000000000000000 RDI: 0000000000001a6e
Apr 1 15:01:42 carlos kernel: [ 1837.164013] RBP: ffff880802c8bd00 R08: 0000000000000000 R09: 0000000025ae8d40
Apr 1 15:01:42 carlos kernel: [ 1837.164014] R10: ffff88080d317520 R11: ffffea001f6f6880 R12: 0000000000001a6e
Apr 1 15:01:42 carlos kernel: [ 1837.164015] R13: 0000000000000004 R14: ffff8807e5d1f700 R15: ffff8807ffacb780
Apr 1 15:01:42 carlos kernel: [ 1837.164018] FS: 0000000000000000(0000) GS:ffff88080d300000(0000) knlGS:ffff88080d300000
Apr 1 15:01:42 carlos kernel: [ 1837.164019] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033
Apr 1 15:01:42 carlos kernel: [ 1837.164020] CR2: 00007fc0598b2000 CR3: 0000000001c13000 CR4: 0000000000042660
Apr 1 15:01:42 carlos kernel: [ 1837.164021] Stack:
Apr 1 15:01:42 carlos kernel: [ 1837.164022] ffff880802c8bd28 ffffffff813c17bb 0000000000000005 000000000000008a
Apr 1 15:01:42 carlos kernel: [ 1837.164023] ffff88079f729240 ffff880802c8bd38 ffffffff813c16fb ffff880802c8bda8
Apr 1 15:01:42 carlos kernel: [ 1837.164025] ffffffffc0e223e7 ffffffffc0e47ea0 0000010000000000 ffffffffc0e47ea0
Apr 1 15:01:42 carlos kernel: [ 1837.164026] Call Trace:
Apr 1 15:01:42 carlos kernel: [ 1837.164031] [<ffffffff813c17bb>] delay_tsc+0x3b/0x80
Apr 1 15:01:42 carlos kernel: [ 1837.164032] [<ffffffff813c16fb>] __const_udelay+0x2b/0x30
Apr 1 15:01:42 carlos kernel: [ 1837.164038] [<ffffffffc0e223e7>] b43_dma_rx+0xb7/0x3e0 [b43]
Apr 1 15:01:42 carlos kernel: [ 1837.164042] [<ffffffff810135ea>] ? __switch_to+0x15a/0x5f0
Apr 1 15:01:42 carlos kernel: [ 1837.164044] [<ffffffff810ce2e0>] ? irq_finalize_oneshot.part.30+0x170/0x170
Apr 1 15:01:42 carlos kernel: [ 1837.164047] [<ffffffffc0df56ed>] b43_interrupt_thread_handler+0x3dd/0x660 [b43]
Apr 1 15:01:42 carlos kernel: [ 1837.164049] [<ffffffff817c337c>] ? __schedule+0x39c/0x8e0
Apr 1 15:01:42 carlos kernel: [ 1837.164051] [<ffffffff810ce300>] irq_thread_fn+0x20/0x50
Apr 1 15:01:42 carlos kernel: [ 1837.164053] [<ffffffff810ce2e0>] ? irq_finalize_oneshot.part.30+0x170/0x170
Apr 1 15:01:42 carlos kernel: [ 1837.164054] [<ffffffff810ce63f>] irq_thread+0x11f/0x150
Apr 1 15:01:42 carlos kernel: [ 1837.164056] [<ffffffff810ce3a0>] ? irq_forced_thread_fn+0x70/0x70
Apr 1 15:01:42 carlos kernel: [ 1837.164058] [<ffffffff810ce520>] ? irq_thread_check_affinity+0xd0/0xd0
Apr 1 15:01:42 carlos kernel: [ 1837.164060] [<ffffffff81094679>] kthread+0xc9/0xe0
Apr 1 15:01:42 carlos kernel: [ 1837.164062] [<ffffffff810945b0>] ? kthread_create_on_node+0x1c0/0x1c0
Apr 1 15:01:42 carlos kernel: [ 1837.164064] [<ffffffff817c8198>] ret_from_fork+0x58/0x90
Apr 1 15:01:42 carlos kernel: [ 1837.164065] [<ffffffff810945b0>] ? kthread_create_on_node+0x1c0/0x1c0
"

b43 (whatever it is) appears to be mad and is polling while in an rx interrupt handler. It also appears as if your CPU is too hot and is being thermally throttled.

~Andrew

--

Gustavo

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