100% Private Proxies – Fast, Anonymous, Quality, Unlimited USA Private Proxy!
Get your private proxies now!
If I enter
Block[{$ RecursionLimit = 70000}, x = x + 1] I get
$ RecursionLimit: Recursion depth of 70000 exceeded during evaluation of 1+x. But at $ RecursionLimit = 80000, Mathematica crashes (i.e. goes unresponsive for a little while and then clears all variables). Why is this? Is there some limiting factor that I can increase to go even further?
I want to create a cubemap and I want to render to it and later sample from it for reflections. However, It crashes when I try to create the faces for the cubemap. Here is my code:
RenderTargetCube::RenderTargetCube(ID3D11Device* device, int resolution, DXGI_FORMAT format) { D3D11_TEXTURE2D_DESC desc = {}; desc.Width = resolution; desc.Height = resolution; desc.MipLevels = 1; desc.ArraySize = 6; desc.Format = format; desc.SampleDesc.Count = 1; desc.SampleDesc.Quality = 0; desc.Usage = D3D11_USAGE_DEFAULT; desc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE; desc.CPUAccessFlags = 0; desc.MiscFlags = D3D11_RESOURCE_MISC_TEXTURECUBE; HRESULT res = device->CreateTexture2D(&desc, NULL, &Texture); throwIfFailed(res); D3D11_RENDER_TARGET_VIEW_DESC viewDesc = {}; viewDesc.Format = desc.Format; viewDesc.Texture2DArray.ArraySize = 6; viewDesc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2DARRAY; for (int i = 0; i < 6; i++) { viewDesc.Texture2DArray.FirstArraySlice = D3D11CalcSubresource(0, i, 1); res = device->CreateRenderTargetView(Texture.Get(), &viewDesc, RenderTargetView[i].GetAddressOf()); // crash here throwIfFailed(res); } and here is the message I receive:
D3D11 ERROR: ID3D11Device::CreateRenderTargetView: The Dimensions of the View are invalid due to at least one of the following conditions. MipSlice (value = 0) must be between 0 and MipLevels-1 of the Texture Resource, 0, inclusively. FirstArraySlice (value = 1) must be between 0 and ArraySize-1 of the Texture Resource, 5, inclusively. With the current FirstArraySlice, ArraySize (value = 6) must be between 1 and 5, inclusively, or -1 to default to all slices from FirstArraySlice, in order that the View fit on the Texture. [ STATE_CREATION ERROR #137: CREATERENDERTARGETVIEW_INVALIDDIMENSIONS]
I dont quite understand the error message, especially the last part about ArraySize, why does it want it to be between 1 and 5 and not 0 to 5?
Managed to get signed length value to memcpy()
02-16 01:44:49.096 6423 6471 W bt_hci_packet_fragmenter: reassemble_and_dispatch reassemble_and_dispatch 02-16 01:44:49.096 6423 6471 W bt_hci_packet_fragmenter: reassemble_and_dispatch partial_packet->offset 40 packet->len 304 HCI_ACL_PREAMBLE_SIZE 4 02-16 01:44:49.096 6423 6471 W bt_hci_packet_fragmenter: reassemble_and_dispatch projected_offset 340 partial_packet->len 41 02-16 01:44:49.096 6423 6471 W bt_hci_packet_fragmenter: reassemble_and_dispatch got packet which would exceed expected length of 41. Truncating. 02-16 01:44:49.096 6423 6471 W bt_hci_packet_fragmenter: reassemble_and_dispatch memcpy packet->len 1 packet->offset 4 expr -3 02-16 01:44:49.096 6423 6471 W bt_hci_packet_fragmenter: reassemble_and_dispatch partial_packet->data 0xacb14580 partial_packet->data + partial_packet->offset 0xacb145a8 packet->data 0xa553e110 packet->data + packet->offset 0xa553e114 02-16 01:44:49.097 6423 6469 W bt_hci_packet_fragmenter: fragment_and_dispatch fragment_and_dispatch In the example above, with a memcpy size of -3, this value is interpreted as an unsigned integer (4294967293) and the memcpy continues until there is a page fault due to unmapped memory and the process should terminate.
My phone in 32 bits, maybe that’s why. Mobile is Samsung S3 Neo+. Using jemalloc at least at Android 9.0 tests. Device is ARM arch.
¯_(ツ)_/¯
Any ideas why memcpy does not crash the process here?
memcpy(partial_packet->data + partial_packet->offset, packet->data + packet->offset, packet->len - packet->offset); https://android.googlesource.com/platform/system/bt/+/3cb7149d8fed2d7d77ceaa95bf845224c4db3baf/hci/src/packet_fragmenter.cc#229
More info also here:
https://github.com/marcinguy/CVE-2020-0022
Thanks,
I have a new install of the 64 bit version of Scrapebox. It is hanging up and crashing on startup when it is downloading the image library. Does anyone know of a solution to this?
Here is my situation. My PC is X570(MSI)+3700X+2070S. My monitor is 1440P 144HZ.
At first, I couldn’t start the installation. Then I changed my monitor to hdmi1.4. The refresh rate was set to 60HZ. After that, I started the installation and crash two times during the installation. I’m not sure I should try the third time. Can anything help me out? with the refresh rate and the crash Thank you so much
I have an overclocked system that has been running a 9700k@4.9Ghz for about a year now. I have never had a crash due to overclocked cpu. However, I wanted to set up a ubuntu installation just for fun to play with RetroPie. I set up a dual boot system on my nvme drive, allocating 26 gb to ubuntu. Installation and everything went fine, until I started to clone RetroPie-Setup from git. My system got rebooted three times during the process, no error message or anything ( I don’t know how to check error logs in ubuntu, yet) So I reset everything in my BIOS (I have an Asus z390 Prime) and booted again into ubuntu. The installation process went through rather smoothely. I monitored the clock speeds, they were in tehir normal range for non-oc CPU.
Again, in Windows, I never had any crashed due to overclocking. I finetuned that cpu when I first got it.
So my question is this: Is this a possibility that ocing could be the cause for my system crashes? Could anyone point me to some insightful logs, perhaps in /var/logs ? That I could provide?
I don’t like the fact that I have to change my BIOS Profile for ubuntu, should that in fact be the cause.
Up til a few months ago, my DisplayLink 3 adapter (RayCue) was working fine with my display. An update to Ubuntu 16.04 followed by a reboot somehow screwed things up, where the system freezes at the login display if the DisplayLink device is plugged in on boot.
Unfortunately, I did not take note of the working combination of DisplayLink driver version and kernel version (assuming this is a starting point to fix the problem), but I can observe this problem with DisplayLink drivers 5.1 and 5.2 all with Linux kernel versions 4.4.0-157-generic and 4.4.0-159-generic. I am not using Nvidia drivers.
Could anyone guess at what might be going wrong and what next steps to take?
I’ve tried everything I can think of to solve this dilemma. Yesterday I had a Ubuntu 19.04 computer, it was however getting a bit bloated and some things (like multiple DNLA media servers) were getting a bit out of hand so I came up with a brilliant solution. First – I had a near-new 1Tb HDD sitting doing nothing, it’s about 3 weeks old Second – The current 2Tb hybrid drive tested OK using smart tools so I leave that installed. Third – powered down the computer, disconnected from power outlet, pressed the ‘on’ button a few times and opened the case added the 1Tb drive to a spare SATA channel and hooked it up the the PSU.
On another computer I downloaded a brand new ISO of Disco Dingo and used Rufus to create a boot drive
Hooked the target PC back up to power/monitor/KB and mouse and booted from USB.
Things seemed to be going swimmingly, along the same path as the initial install. – Remember this is going to be a clean install and all the data I need is on separate back-up solutions.
so Install Ubuntu is selected then Erase drive and use LVM, use 3rd part drivers and codecs, install updates during installation to save time then Install now then select location then a name for the PC on the network, plus a name and password for me is chosen the installer starts ticking over for what seems like hours (but is actually about 20 minutes. Until it comes to a complete halt, I have a window open on the monitor telling me that the CD is dirty or was created too fast, the target drive is failing But …… I’m not using a CD/DVD, one drive is brand spanking new and the other (according to S.M.A.R.T https://en.wikipedia.org/wiki/S.M.A.R.T.) is 360 days old with parameters within the norm.
So I’m stuck the installer then crashes, I send a report using the automated bug reporting tool.
And I start again, a new ISO (passes the SHA256 tests) different USB (in case the old one has some flaw)
First – boot from the USB so far so good, a window in the middle of the screen asks me to try Ubuntu or Install it, I’ve already tried it so I take the install option I only use English and it’s a English (US) keyboard -> CONTINUE Normal Installation/Download updates/Install 3rd party software for graphics wi-fi and media formats -> CONTINUE we have to wait a few minutes while the installer does it’s downloading finally, again, and again “The Installation Failed [Errno 5] Input/Output error This is often ue to a faulty CD/DVD disc or drive, or a faulty hard disk, it may help to clean the CD/DVD, to burn the CD/DVD at a lower speed. to clean the CD/DVD dive lens (cleaning kits are often available from electronics suppliers), to check whether the hard disk is old and in need of a replacement, or to move the system to a cooler environment”
So as the kids say – WTF !
there isn’t any CD/DVD issues in play and the oldest drive is less than a year old. It’s the middle of winter and it’s 14 degrees.
I suspect I may have to try a different installer or something
I’m on Ubuntu 18.04.3 LTS, Gnome 3.28.2 with no dual boot and no external USB devices. Once a while I get a black terminal screen with this error information.
When I get this black screen the computer doesn’t respond anymore and I have to reboot with the power button.
Hardware & OS info:
(base) x@x:~$ df Filesystem 1K-blocks Used Available Use% Mounted on udev 8074028 0 8074028 0% /dev tmpfs 1621272 2176 1619096 1% /run /dev/mapper/ubuntu--vg-root 113125620 97117896 10218236 91% / tmpfs 8106348 126836 7979512 2% /dev/shm tmpfs 5120 4 5116 1% /run/lock tmpfs 8106348 0 8106348 0% /sys/fs/cgroup /dev/loop3 1024 1024 0 100% /snap/gnome-logs/61 /dev/loop2 69248 69248 0 100% /snap/sublime-text/67 /dev/loop1 4224 4224 0 100% /snap/gnome-calculator/406 /dev/sda1 720368 150420 517556 23% /boot /dev/loop4 90880 90880 0 100% /snap/core/7396 /dev/loop5 141696 141696 0 100% /snap/thunderbird/29 /dev/loop7 224256 224256 0 100% /snap/gimp/165 /dev/loop8 88448 88448 0 100% /snap/ubuntu-mate-welcome/335 /dev/loop11 19200 19200 0 100% /snap/communitheme/1593 /dev/loop10 58368 58368 0 100% /snap/powershell/36 /dev/loop12 268544 268544 0 100% /snap/gnss-sdr-next/285 /dev/loop14 207232 207232 0 100% /snap/vlc/770 /dev/loop19 15104 15104 0 100% /snap/gnome-characters/317 /dev/loop16 99840 99840 0 100% /snap/ubuntu-mate-welcome/296 /dev/loop15 48896 48896 0 100% /snap/riseup-vpn/152 /dev/loop20 15104 15104 0 100% /snap/gnome-characters/296 /dev/loop21 153216 153216 0 100% /snap/slack/16 /dev/loop22 153600 153600 0 100% /snap/gnome-3-28-1804/71 /dev/loop24 1280 1280 0 100% /snap/tinc-vpn/2 /dev/loop26 150144 150144 0 100% /snap/slack/17 /dev/loop27 43904 43904 0 100% /snap/gtk-common-themes/1313 /dev/loop30 153600 153600 0 100% /snap/gnome-3-28-1804/67 /dev/loop31 207744 207744 0 100% /snap/vlc/1049 /dev/loop33 58368 58368 0 100% /snap/powershell/34 /dev/loop34 16384 16384 0 100% /snap/communitheme/1768 /dev/loop35 88832 88832 0 100% /snap/ubuntu-mate-welcome/319 /dev/loop36 144128 144128 0 100% /snap/gnome-3-26-1604/90 /dev/loop37 127360 127360 0 100% /snap/electron-mail/13 /dev/loop38 36224 36224 0 100% /snap/gtk-common-themes/1198 /dev/loop39 153344 153344 0 100% /snap/chromium/849 /dev/loop40 77568 77568 0 100% /snap/cubicsdr-casept/4 /dev/loop41 3840 3840 0 100% /snap/gnome-system-monitor/95 /dev/loop42 19072 19072 0 100% /snap/communitheme/1524 /dev/loop43 55808 55808 0 100% /snap/core18/1098 /dev/loop45 327936 327936 0 100% /snap/pycharm-community/147 /dev/loop46 69248 69248 0 100% /snap/sublime-text/69 /dev/loop47 3840 3840 0 100% /snap/gnome-system-monitor/100 /dev/loop48 224384 224384 0 100% /snap/gimp/189 tmpfs 1621268 28 1621240 1% /run/user/121 tmpfs 1621268 76 1621192 1% /run/user/1000 /dev/loop49 144128 144128 0 100% /snap/gnome-3-26-1604/92 /dev/loop23 97024 97024 0 100% /snap/telegram-desktop/908 /dev/loop25 91264 91264 0 100% /snap/core/7713 /dev/loop6 1024 1024 0 100% /snap/gnome-logs/73 /dev/loop50 4352 4352 0 100% /snap/gnome-calculator/501 /dev/loop13 97152 97152 0 100% /snap/telegram-desktop/936 /dev/loop17 268544 268544 0 100% /snap/gnss-sdr-next/292 /dev/loop0 159616 159616 0 100% /snap/chromium/853 /dev/loop18 327936 327936 0 100% /snap/pycharm-community/150 /dev/loop28 55808 55808 0 100% /snap/core18/1144 (base) x@x:~$ Hardware list:
root@x:/home/x# lshw x description: Notebook product: 80RU (LENOVO_MT_80RU_BU_idea_FM_Lenovo ideapad 700-15ISK) vendor: LENOVO version: Lenovo ideapad 700-15ISK serial: R90K3F7XR9N0B631000C width: 64 bits capabilities: smbios-2.8 dmi-2.8 smp vsyscall32 configuration: administrator_password=enabled boot=normal chassis=notebook family=IDEAPAD frontpanel_password=disabled keyboard_password=disabled power-on_password=disabled sku=LENOVO_MT_80RU_BU_idea_FM_Lenovo ideapad 700-15ISK uuid=800CF8AE-A5E6-E511-88B2-08D40CB5171E *-core description: Motherboard product: Lenovo ideapad 700-15ISK vendor: LENOVO physical id: 0 version: SDK0J40709 WIN serial: R90K3F7X slot: Part Component *-cache:0 description: L1 cache physical id: 2 slot: L1 Cache size: 128KiB capacity: 128KiB capabilities: synchronous internal write-back data configuration: level=1 *-cache:1 description: L1 cache physical id: 3 slot: L1 Cache size: 128KiB capacity: 128KiB capabilities: synchronous internal write-back instruction configuration: level=1 *-cache:2 description: L2 cache physical id: 4 slot: L2 Cache size: 1MiB capacity: 1MiB capabilities: synchronous internal write-back unified configuration: level=2 *-cache:3 description: L3 cache physical id: 5 slot: L3 Cache size: 6MiB capacity: 6MiB capabilities: synchronous internal write-back unified configuration: level=3 *-cpu description: CPU product: Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz vendor: Intel Corp. physical id: 6 bus info: cpu@0 version: Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz serial: To Be Filled By O.E.M. slot: U3E1 size: 2349MHz capacity: 3500MHz width: 64 bits clock: 100MHz capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d cpufreq configuration: cores=4 enabledcores=4 threads=8 *-memory description: System Memory physical id: 7 slot: System board or motherboard size: 16GiB *-bank:0 description: SODIMM DDR4 Synchronous 2133 MHz (0.5 ns) product: CT8G4SFD8213.C16FBD1 vendor: Conexant (Rockwell) physical id: 0 serial: 16141922 slot: ChannelA-DIMM0 size: 8GiB width: 64 bits clock: 2133MHz (0.5ns) *-bank:1 description: Project-Id-Version: lshwReport-Msgid-Bugs-To: FULL NAME <EMAIL@ADDRESS>PO-Revision-Date: 2012-02-05 00:26+0000Last-Translator: Andi Chandler <Unknown>Language-Team: English (United Kingdom) <en_GB@li.org>MIME-Version: 1.0Content-Type: text/plain; charset=UTF-8Content-Transfer-Encoding: 8bitX-Launchpad-Export-Date: 2018-07-12 13:19+0000X-Generator: Launchpad (build 18719)Project-Id-Version: lshwReport-Msgid-Bugs-To: FULL NAME <EMAIL@ADDRESS>PO-Revision-Date: 2012-02-05 00:26+0000Last-Translator: Andi Chandler <Unknown>Language-Team: English (United Kingdom) <en_GB@li.org>MIME-Version: 1.0Content-Type: text/plain; charset=UTF-8Content-Transfer-Encoding: 8bitX-Launchpad-Export-Date: 2018-07-12 13:19+0000X-Generator: Launchpad (build 18719) [empty] physical id: 1 slot: ChannelA-DIMM1 *-bank:2 description: SODIMM DDR4 Synchronous 2133 MHz (0.5 ns) product: CT8G4SFD8213.C16FBD1 vendor: Conexant (Rockwell) physical id: 2 serial: 16270421 slot: ChannelB-DIMM0 size: 8GiB width: 64 bits clock: 2133MHz (0.5ns) *-bank:3 description: Project-Id-Version: lshwReport-Msgid-Bugs-To: FULL NAME <EMAIL@ADDRESS>PO-Revision-Date: 2012-02-05 00:26+0000Last-Translator: Andi Chandler <Unknown>Language-Team: English (United Kingdom) <en_GB@li.org>MIME-Version: 1.0Content-Type: text/plain; charset=UTF-8Content-Transfer-Encoding: 8bitX-Launchpad-Export-Date: 2018-07-12 13:19+0000X-Generator: Launchpad (build 18719)Project-Id-Version: lshwReport-Msgid-Bugs-To: FULL NAME <EMAIL@ADDRESS>PO-Revision-Date: 2012-02-05 00:26+0000Last-Translator: Andi Chandler <Unknown>Language-Team: English (United Kingdom) <en_GB@li.org>MIME-Version: 1.0Content-Type: text/plain; charset=UTF-8Content-Transfer-Encoding: 8bitX-Launchpad-Export-Date: 2018-07-12 13:19+0000X-Generator: Launchpad (build 18719) [empty] physical id: 3 slot: ChannelB-DIMM1 *-firmware description: BIOS vendor: LENOVO physical id: d version: E5CN21WW date: 12/28/2015 size: 128KiB capacity: 8128KiB capabilities: pci upgrade shadowing cdboot bootselect edd int5printscreen int9keyboard int14serial int17printer int10video pc98 acpi usb ls120boot zipboot biosbootspecification netboot *-pci description: Host bridge product: Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers vendor: Intel Corporation physical id: 100 bus info: pci@0000:00:00.0 version: 07 width: 32 bits clock: 33MHz configuration: driver=skl_uncore resources: irq:0 *-pci:0 description: PCI bridge product: Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) vendor: Intel Corporation physical id: 1 bus info: pci@0000:00:01.0 version: 07 width: 32 bits clock: 33MHz capabilities: pci pm msi pciexpress normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:120 ioport:d000(size=4096) memory:d1000000-d1ffffff ioport:a0000000(size=301989888) *-display description: 3D controller product: GM107M [GeForce GTX 950M] vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a2 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=nouveau latency=0 resources: irq:126 memory:d1000000-d1ffffff memory:a0000000-afffffff memory:b0000000-b1ffffff ioport:d000(size=128) *-display description: VGA compatible controller product: HD Graphics 530 vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 06 width: 64 bits clock: 33MHz capabilities: pciexpress msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:127 memory:d0000000-d0ffffff memory:c0000000-cfffffff ioport:e000(size=64) memory:c0000-dffff *-usb description: USB controller product: 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller vendor: Intel Corporation physical id: 14 bus info: pci@0000:00:14.0 version: 31 width: 64 bits clock: 33MHz capabilities: pm msi xhci bus_master cap_list configuration: driver=xhci_hcd latency=0 resources: irq:123 memory:d2200000-d220ffff *-usbhost:0 product: xHCI Host Controller vendor: Linux 4.15.0-60-generic xhci-hcd physical id: 0 bus info: usb@1 logical name: usb1 version: 4.15 capabilities: usb-2.00 configuration: driver=hub slots=16 speed=480Mbit/s *-usb:0 description: Keyboard product: USB Receiver vendor: Logitech physical id: 1 bus info: usb@1:1 version: 29.01 capabilities: usb-2.00 configuration: driver=usbhid maxpower=98mA speed=12Mbit/s *-usb:1 description: Video product: Lenovo EasyCamera vendor: Bison physical id: 5 bus info: usb@1:5 version: 42.09 serial: 200901010001 capabilities: usb-2.00 configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s *-usb:2 description: Bluetooth wireless interface vendor: Intel Corp. physical id: 7 bus info: usb@1:7 version: 0.01 capabilities: bluetooth usb-2.00 configuration: driver=btusb maxpower=100mA speed=12Mbit/s *-usbhost:1 product: xHCI Host Controller vendor: Linux 4.15.0-60-generic xhci-hcd physical id: 1 bus info: usb@2 logical name: usb2 version: 4.15 capabilities: usb-3.00 configuration: driver=hub slots=8 speed=5000Mbit/s *-generic:0 description: Signal processing controller product: 100 Series/C230 Series Chipset Family Thermal Subsystem vendor: Intel Corporation physical id: 14.2 bus info: pci@0000:00:14.2 version: 31 width: 64 bits clock: 33MHz capabilities: pm msi bus_master cap_list configuration: driver=intel_pch_thermal latency=0 resources: irq:18 memory:d222a000-d222afff *-communication description: Communication controller product: 100 Series/C230 Series Chipset Family MEI Controller #1 vendor: Intel Corporation physical id: 16 bus info: pci@0000:00:16.0 version: 31 width: 64 bits clock: 33MHz capabilities: pm msi bus_master cap_list configuration: driver=mei_me latency=0 resources: irq:128 memory:d222c000-d222cfff *-storage description: SATA controller product: HM170/QM170 Chipset SATA Controller [AHCI Mode] vendor: Intel Corporation physical id: 17 bus info: pci@0000:00:17.0 version: 31 width: 32 bits clock: 66MHz capabilities: storage msi pm ahci_1.0 bus_master cap_list configuration: driver=ahci latency=0 resources: irq:124 memory:d2228000-d2229fff memory:d2230000-d22300ff ioport:e080(size=8) ioport:e088(size=4) ioport:e060(size=32) memory:d222e000-d222e7ff *-pci:1 description: PCI bridge product: 100 Series/C230 Series Chipset Family PCI Express Root Port #5 vendor: Intel Corporation physical id: 1c bus info: pci@0000:00:1c.0 version: f1 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:121 memory:d2100000-d21fffff *-network description: Wireless interface product: Dual Band Wireless-AC 3165 Plus Bluetooth vendor: Intel Corporation physical id: 0 bus info: pci@0000:02:00.0 logical name: wlp2s0 version: 99 serial: 08:d4:0c:b5:17:1a width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-60-generic firmware=29.1044073957.0 ip=192.168.1.69 latency=0 link=yes multicast=yes wireless=IEEE 802.11 resources: irq:129 memory:d2100000-d2101fff *-pci:2 description: PCI bridge product: 100 Series/C230 Series Chipset Family PCI Express Root Port #6 vendor: Intel Corporation physical id: 1c.5 bus info: pci@0000:00:1c.5 version: f1 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:122 ioport:c000(size=4096) memory:d2000000-d20fffff *-network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: enp3s0 version: 15 serial: 54:ee:75:94:08:75 size: 10Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII speed=10Mbit/s resources: irq:17 ioport:c000(size=256) memory:d2004000-d2004fff memory:d2000000-d2003fff *-generic:1 description: Signal processing controller product: 100 Series/C230 Series Chipset Family Serial IO UART #0 vendor: Intel Corporation physical id: 1e bus info: pci@0000:00:1e.0 version: 31 width: 64 bits clock: 33MHz capabilities: pm bus_master cap_list configuration: driver=intel-lpss latency=0 resources: irq:20 memory:d222d000-d222dfff *-isa description: ISA bridge product: HM170 Chipset LPC/eSPI Controller vendor: Intel Corporation physical id: 1f bus info: pci@0000:00:1f.0 version: 31 width: 32 bits clock: 33MHz capabilities: isa bus_master configuration: latency=0 *-memory UNCLAIMED description: Memory controller product: 100 Series/C230 Series Chipset Family Power Management Controller vendor: Intel Corporation physical id: 1f.2 bus info: pci@0000:00:1f.2 version: 31 width: 32 bits clock: 33MHz (30.3ns) capabilities: bus_master configuration: latency=0 resources: memory:d2224000-d2227fff *-multimedia description: Audio device product: 100 Series/C230 Series Chipset Family HD Audio Controller vendor: Intel Corporation physical id: 1f.3 bus info: pci@0000:00:1f.3 version: 31 width: 64 bits clock: 33MHz capabilities: pm msi bus_master cap_list configuration: driver=snd_hda_intel latency=64 resources: irq:130 memory:d2220000-d2223fff memory:d2210000-d221ffff *-serial UNCLAIMED description: SMBus product: 100 Series/C230 Series Chipset Family SMBus vendor: Intel Corporation physical id: 1f.4 bus info: pci@0000:00:1f.4 version: 31 width: 64 bits clock: 33MHz configuration: latency=0 resources: memory:d222f000-d222f0ff ioport:efa0(size=32) *-scsi:0 physical id: 0 logical name: scsi0 capabilities: emulated *-disk description: ATA Disk product: ADATA SP550NS38 physical id: 0.0.0 bus info: scsi@0:0.0.0 logical name: /dev/sda version: 4B serial: 2G4220000183 size: 111GiB (120GB) capabilities: partitioned partitioned:dos configuration: ansiversion=5 logicalsectorsize=512 sectorsize=512 signature=cb312d6a *-volume:0 description: EXT4 volume vendor: Linux physical id: 1 bus info: scsi@0:0.0.0,1 logical name: /dev/sda1 logical name: /boot version: 1.0 serial: 6480205e-88e0-4b20-b930-38dee5b56148 size: 731MiB capacity: 731MiB capabilities: primary bootable journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized configuration: created=2018-11-11 23:13:29 filesystem=ext4 lastmountpoint=/boot modified=2019-09-08 17:24:42 mount.fstype=ext4 mount.options=rw,relatime,data=ordered mounted=2019-09-08 17:24:42 state=mounted *-volume:1 description: Extended partition physical id: 2 bus info: scsi@0:0.0.0,2 logical name: /dev/sda2 size: 111GiB capacity: 111GiB capabilities: primary extended partitioned partitioned:extended *-logicalvolume description: Linux filesystem partition physical id: 5 logical name: /dev/sda5 serial: 775a1793-1ea1-4fe2-bcd9-4880a3924ee0 size: 111GiB capacity: 111GiB width: 512 bits capabilities: encrypted luks initialized configuration: bits=512 cipher=aes filesystem=luks hash=sha256 mode=xts-plain64 version=1 *-scsi:1 physical id: 1 logical name: scsi2 capabilities: emulated *-disk description: ATA Disk product: WDC WD10SPCX-24H vendor: Western Digital physical id: 0.0.0 bus info: scsi@2:0.0.0 logical name: /dev/sdb version: 1A02 serial: WD-WXA1AB57JSDL size: 931GiB (1TB) capabilities: partitioned partitioned:dos configuration: ansiversion=5 logicalsectorsize=512 sectorsize=4096 signature=30d5ab25 *-volume description: EXT4 volume vendor: Linux physical id: 1 bus info: scsi@2:0.0.0,1 logical name: /dev/sdb1 version: 1.0 serial: 0210a406-4dce-4a43-ac18-82f1a30c8c2c size: 931GiB capacity: 931GiB capabilities: primary journaled extended_attributes large_files huge_files dir_nlink 64bit extents ext4 ext2 initialized configuration: created=2018-11-09 17:40:00 filesystem=ext4 label=1TB lastmountpoint=/media/x/1TB modified=2019-09-06 11:31:08 mounted=2019-09-06 11:31:04 state=clean *-battery product: Smart Battery vendor: Intel Corp. physical id: 1 version: 2008 serial: 1.0 slot: Rear Few weeks ago I got 3 VPS machines (KVM) from a provider, and 2 of them crashed after a week ( at random/different times ). They all had 512MB ram ( with 512mb swap space ).
One one of them actually was shutdown and had a “offline” label in the provider’s admin panel, and the other was kinda frozen, the panel showed “Online” but I couldn’t ssh or access to it though web console.
None of them were running anything cpu/memory intensive tasks. One was just a openvpn server (with 2-3users) and the other just nginx+php serving a static site. Both of them had like 200-300 available memory at all times and the cpu was below 10% usage.
I had Netdata monitoring installed. So I had a history of almost everything. I looked up every single chart and graph right before the crashes. There was no spike or sudden increase in CPU/Memory/Disk/Network/Process/Firewall usage.
I looked up every single log file under /var/logs/. I read them line by line (before crash happened). I also used journalctl. There was no error, no warnings, no out of memory, no process killing, just normal events.
Both the servers that crashed had a syslog that looked like this:
As you can see the ufw is just blocking random spammers right before the crash and then there is no log. Also the boot you see at 20:41:02 is the hard/forced reboot we did after the crash happened, just to get the system back online.
When I asked the provide they said everything looks ok on their side and the reason my servers crashed was because 512MB RAM was too low and I had to upgrade.
Also, there are 2 things that I randomly read on the internet that I thought I ask here if they’re an actual thing.
journal_data_writeback that if it’s enabled, the system might miss writing logs to the disk during a crash.