apport information
** Tags added: apport-collected
** Description changed:
Slab and SUnreclaim values in /proc/meminfo keep increasing. On one
servers it reached 85% of physical memory after 14 days - but on most
other servers it increases more slowly. I checked /proc/slabinfo and
almost all allocations were in kmalloc-512. So I enabled
"slub_debug=U,kmalloc-512" on one server, and after only 24h of uptime
11% of the memory was used by kmalloc-512 and unreclaimable. With
debugging enabled I could see the following in
/sys/kernel/slab/kmalloc-512/alloc_calls:
521294 storvsc_queuecommand+0x359/0x790 [hv_storvsc]
age=161922/955116/20882927 pid=1-41545
All other counters were below 2000. In
/sys/kernel/slab/kmalloc-512/free_calls I see the following:
516823 <not-available> age=4315783846 pid=0
The hv_storvsc module is for Hyper-V. We are (unfortunately) running
Hyper-V 6.3.9600.16384 with Microsoft System Center 2012 R2 Update
rollup 3 for all the servers with this issue.
Kernels are stock linux-image-3.13.0-63-generic, 3.13.0-63.103, x86_64,
from Ubuntu 14.04 LTS . /proc/version_signature contains:
Ubuntu 3.13.0-63.103-generic 3.13.11-ckt25
No output from lspci -vnvn. The problem described above happens on both
single and multicore virtual machines. CPU in hypervisors are E5-2630 v2
@ 2.60GHz. Let me know if you need more info or if I can do more
debugging.
Regards,
Oskar Liljeblad
+ ---
+ AlsaDevices:
+ total 0
+ crw-rw---- 1 root audio 116, 1 Sep 24 00:31 seq
+ crw-rw---- 1 root audio 116, 33 Sep 24 00:31 timer
+ AplayDevices: Error: [Errno 2] No such file or directory
+ ApportVersion: 2.14.1-0ubuntu3.13
+ Architecture: amd64
+ ArecordDevices: Error: [Errno 2] No such file or directory
+ AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
+ CRDA: Error: [Errno 2] No such file or directory
+ CurrentDmesg:
+ [59081.977909] systemd-udevd[26480]: starting version 204
+ [59124.051974] init: systemd-logind main process (756) killed by TERM signal
+ DistroRelease: Ubuntu 14.04
+ InstallationDate: Installed on 2014-09-09 (380 days ago)
+ InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64
(20140722.3)
+ IwConfig:
+ eth0 no wireless extensions.
+
+ eth1 no wireless extensions.
+
+ lo no wireless extensions.
+ Lspci:
+
+ Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize
libusb: -99
+ MachineType: Microsoft Corporation Virtual Machine
+ Package: linux (not installed)
+ PciMultimedia:
+
+ ProcFB: 0 hyperv_fb
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-63-generic.efi.signed
root=UUID=f4d228d6-2eee-40fc-bf3f-633e46fa8301 ro slub_debug=U,kmalloc-512
+ ProcVersionSignature: Ubuntu 3.13.0-63.103-generic 3.13.11-ckt25
+ RelatedPackageVersions:
+ linux-restricted-modules-3.13.0-63-generic N/A
+ linux-backports-modules-3.13.0-63-generic N/A
+ linux-firmware 1.127.15
+ RfKill: Error: [Errno 2] No such file or directory
+ Tags: trusty
+ Uname: Linux 3.13.0-63-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups:
+
+ WifiSyslog:
+ Sep 24 02:06:19 adm-backup1 dhclient: message repeated 1447 times: [
DHCPREQUEST of 10.40.128.9 on eth0 to 192.0.2.253 port 67 (xid=0x429dad4)]
+ Sep 24 02:06:37 adm-backup1 dhclient: DHCPREQUEST of 10.40.128.9 on eth0 to
255.255.255.255 port 67 (xid=0x429dad4)
+ Sep 24 02:06:37 adm-backup1 dhclient: DHCPACK of 10.40.128.9 from 192.0.2.253
+ Sep 24 02:06:37 adm-backup1 dhclient: bound to 10.40.128.9 -- renewal in
44877 seconds.
+ _MarkForUpload: True
+ dmi.bios.date: 11/26/2012
+ dmi.bios.vendor: Microsoft Corporation
+ dmi.bios.version: Hyper-V UEFI Release v1.0
+ dmi.board.asset.tag: None
+ dmi.board.name: Virtual Machine
+ dmi.board.vendor: Microsoft Corporation
+ dmi.board.version: Hyper-V UEFI Release v1.0
+ dmi.chassis.asset.tag: 6126-4244-1659-0314-3158-3955-44
+ dmi.chassis.type: 3
+ dmi.chassis.vendor: Microsoft Corporation
+ dmi.chassis.version: Hyper-V UEFI Release v1.0
+ dmi.modalias:
dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev1.0:bd11/26/2012:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev1.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev1.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev1.0:
+ dmi.product.name: Virtual Machine
+ dmi.product.version: Hyper-V UEFI Release v1.0
+ dmi.sys.vendor: Microsoft Corporation
** Attachment added: "BootDmesg.txt"
https://bugs.launchpad.net/bugs/1499203/+attachment/4473285/+files/BootDmesg.txt
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https://bugs.launchpad.net/bugs/1499203
Title:
memory leak in hv_storvsc (3.13.0-63-generic)
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