Public bug reported: A simple stress test conducted on a KVM guest running standard updated Lucid with vsftpd demonstrates that memory is continuously used up until OOM Killer starts to protect the system. If test is terminated before that point is reached then memory is freed only after several hours.
This does not occur with the 2.6.35 kernel (LTS backported kernel). The test is started in this way: $ for i in 1 2 3 4 5 6 7 8 ; do ./feedftp $i >/dev/null & done What is observed during the test is that /proc/vmallocinfo grows continually with lines like the following being added: 0xffffe8ffff800000-0xffffe8ffffa00000 2097152 pcpu_get_vm_areas+0x0/0x790 vmalloc 0xffffe8ffffa00000-0xffffe8ffffc00000 2097152 pcpu_get_vm_areas+0x0/0x790 vmalloc 0xffffe8ffffc00000-0xffffe8ffffe00000 2097152 pcpu_get_vm_areas+0x0/0x790 vmalloc Attached: - test script (see feedftp) - tarball containing the proc file at various times during the test (see vmallocinfo.32.tar) - dmesg output showing OOM Killer at work (see dmesg-oom.32.txt) May be related: https://bugs.launchpad.net/ubuntu/+source/vsftpd/+bug/682865 ========= ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: linux-image-2.6.32-28-server (not installed) Regression: No Reproducible: Yes ProcVersionSignature: User Name 2.6.32-28.55-server 2.6.32.27+drm33.12 Uname: Linux 2.6.32-28-server x86_64 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 CurrentDmesg: [ 12.360149] eth0: no IPv6 routers present Date: Wed Feb 16 14:00:19 2011 Lspci: Error: [Errno 2] No such file or directory Lsusb: Error: [Errno 2] No such file or directory MachineType: Bochs Bochs PciMultimedia: ProcCmdLine: root=UUID=7bbf58be-9c5f-4113-ad1b-4611fd131d33 ro ProcEnviron: LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: linux dmi.bios.date: 01/01/2007 dmi.bios.vendor: Bochs dmi.bios.version: Bochs dmi.chassis.type: 1 dmi.chassis.vendor: Bochs dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2007:svnBochs:pnBochs:pvr:cvnBochs:ct1:cvr: dmi.product.name: Bochs dmi.sys.vendor: Bochs ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug lucid needs-upstream-testing -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/720095 Title: vsftpd causes memory leak in Lucid -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
