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[Bug 1589491] Re: Kernel memory leak: swap in use without obvious program using it
Since I don't see top output or similar in the automatic attachments, I
include the output of top and /proc/meminfo
** Attachment added: "top.txt"
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Kernel memory leak: swap in use without obvious program using it
Status in linux package in Ubuntu:
I don't know how to diagnose this problem and internet searches do not
give clear pointers: resource usage programs (free, top, htop) report
huge total swap usage (growing over time until all swap space is
exhausted), but no application is using unusual amounts of memory. In
other words, memory seems to be being lost without being associated to
I don't now if this could be the fault of the kernel, some module, or
something else. I would appreciate any pointers on how to try to
pinpoint the culprit.
The bug has been filed with ubuntu-bug so all process memory usage
should be included. As I write, I see around 4G of swap used, and the
program using the most is using ~80MB only. Certainly, the aggregated
swap seen with top in programs is nowhere near 4G.
The swap use seems legit, since once the swap space is reported
exhausted, the computer starts being less responsive, until I reboot.
DistroRelease: Ubuntu 15.10
Package: linux-image-generic 126.96.36.199.39
ProcVersionSignature: Ubuntu 4.2.0-36.42-generic 4.2.8-ckt8
Uname: Linux 4.2.0-36-generic x86_64
USER PID ACCESS COMMAND
/dev/snd/controlC0: jano 1901 F.... pulseaudio
/dev/snd/controlC1: jano 1901 F.... pulseaudio
Date: Mon Jun 6 14:59:25 2016
InstallationDate: Installed on 2016-02-08 (118 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Hewlett-Packard HP Compaq 8200 Elite SFF PC
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-36-generic root=UUID=5e3b17bb-b786-4c5d-b231-c51f3c2e5fda ro quiet splash crashkernel=384M-:128M vt.handoff=7
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: Upgraded to wily on 2016-04-26 (41 days ago)
jun 03 09:50:29 miles kernel: usb 1-1.6: reset high-speed USB device number 5 using ehci-pci
jun 03 10:43:53 miles kernel: usb 1-1.6: reset high-speed USB device number 5 using ehci-pci
jun 06 12:12:37 miles kernel: [drm] GPU HANG: ecode 6:-1:0x00000000, reason: Kicking stuck semaphore on render ring, action: continue
jun 06 13:26:50 miles kernel: [drm] GPU HANG: ecode 6:-1:0x00000000, reason: Kicking stuck semaphore on render ring, action: continue
dmi.bios.version: J01 v02.06
dmi.product.name: HP Compaq 8200 Elite SFF PC
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