I am sorry, I unfortunately got distracted by trying to finish some feature for the next release. And I must admit right now I have no good idea how to proceed. The pages that got dumped at least to me show no pattern that points to a certain process. You might be in a better position there since you know better what those instances are doing. The only vague suspect might be something that does asynchronous I/O (just because that would to a certain degree use anonymous pages which seem to be ending up on free lists incorrectly). If there was to be certain processes you would know to use aio and if that would be configurable, it would be worth trying to turn that off and see whether the instance survives. Or if there are independent tasks that cause some of the load and could be turned off and on, maybe it would become more obvious which direction to look. Though I doubt this is possible.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1178707 Title: Kernel Panics - ec2 Status in “linux” package in Ubuntu: Confirmed Bug description: Kernel Versions affected: 2.6.32-346-ec2 #51-Ubuntu 2.6.32-309-ec2 #18-Ubuntu SMP 3.0.0-32-virtual #51~lucid1-Ubuntu SMP 2.6.32-351-ec2 #64-Ubuntu SMP Description: Ubuntu 10.04.4 LTS Release: 10.04 We're seeing Kernel Panics across a variety of different instance types on AWS all running 10.04 on the following AMIs ami-da0cf8b3 ami-3fe54d56 We've tested with Various Kernels and still have had the issue. I've attached the console output from a few of the servers where the panics occur as well as the --- AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory AplayDevices: Error: [Errno 2] No such file or directory Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory DistroRelease: Ubuntu 10.04 Frequency: Once every few days. Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: Package: linux (not installed) ProcCmdLine: root=LABEL=cloudimg-rootfs ro xencons=hvc0 console=hvc0 ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcModules: acpiphp 23989 0 - Live 0xffffffffa0000000 ProcVersionSignature: Ubuntu 3.0.0-32.51~lucid1-virtual 3.0.69 Regression: No Reproducible: No Tags: lucid kconfig needs-upstream-testing Uname: Linux 3.0.0-32-virtual x86_64 UserGroups: --- AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory AplayDevices: Error: [Errno 2] No such file or directory Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory DistroRelease: Ubuntu 10.04 Frequency: Once every few days. Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: Package: linux (not installed) ProcCmdLine: root=/dev/sda1 ro 4 ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcModules: ipv6 293511 12 - Live 0xffffffffa0000000 ProcVersionSignature: Ubuntu 2.6.32-309.18-ec2 2.6.32.21+drm33.7 Regression: No Reproducible: No Tags: lucid kconfig needs-upstream-testing Uname: Linux 2.6.32-309-ec2 x86_64 UserGroups: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1178707/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
