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apport-collect 1347008
** Package changed: linux-lts-trusty (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Importance: Undecided => Low
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1347008
Title:
Call trace and “TCP: out of memory… consider tuning tcp_mem”
Status in linux package in Ubuntu:
Incomplete
Bug description:
The install on a remote machine was upgraded to the trusty-lts kernel
as stated in the HWE instructions. There is a bridge (br0) configured
with the Ethernet interface (eth0) through the interfaces(5)
configuration. After a couple of hours the machine would only respond
to ICMP queries and connections with all services running on TCP ports
could not be established. Therefore, a hard reboot was issued.
Attached is the contents of /var/log/kern.log, post-reboot, with what
seems to be relevant information (call trace, kernel message with
“TCP: out of memory… consider tuning tcp_mem”, etc) around the
relevant timespan. Inbound services running on TCP ports being
inaccessible was first noticed around 02:30 (the machine's time). This
matches up with the first “out of memory” message.
The machine is running precise 12.04.4:
valdearg@blair:~$ uname -a;dpkg -l linux-generic-lts-trusty
linux-image-3.13.0-32-generic;grep 'LTS' /etc/lsb-release;lspci|grep Ether
Linux blair 3.13.0-32-generic #57~precise1-Ubuntu SMP Tue Jul 15 03:51:20 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version
Description
+++-====================================-====================================-========================================================================================
ii linux-generic-lts-trusty 3.13.0.32.28
Generic Linux kernel image and headers
ii linux-image-3.13.0-32-generic 3.13.0-32.57~precise1
Linux kernel image for version 3.13.0 on 64 bit x86 SMP
DISTRIB_DESCRIPTION="Ubuntu 12.04.4 LTS"
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
This incident might be related to these bug reports:
https://bugzilla.kernel.org/show_bug.cgi?id=77481
https://lists.debian.org/debian-kernel/2014/04/msg00184.html
Please let me know if there is anything else I can provide.
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