A simple test case was created by Steven Noonan to trigger the issue: Copy the attached code into a file named bugtest.c Compile with "gcc -o bugtest bugtest.c" Run ./bugtest (does not have to be run as root) If you see no output, bug does not exist; if it does you will immediately see something similar to:
triden@tweety:~$ ./bugtest [ 837.276658] BUG: Bad page map in process bugtest pte:8000000000000965 pmd:3c076067 [ 837.276666] page:ffffea0000000000 count:-31 mapcount:-31 mapping: (null) index:0x0 [ 837.276669] page flags: 0x10(dirty) [ 837.276672] page dumped because: bad pte [ 837.276674] addr:00007f0639a5e000 vm_flags:08100071 anon_vma:ffff88003b1fdbc0 mapping: (null) index:7f0639a5e [ 837.276821] BUG: Bad rss-counter state mm:ffff88003d2e8700 idx:0 val:-1 [ 837.276825] BUG: Bad rss-counter state mm:ffff88003d2e8700 idx:1 val:1 Reference: https://lkml.org/lkml/2014/1/21/544 ** Attachment added: "testcase program" https://bugs.launchpad.net/ubuntu/+source/vsftpd/+bug/1313450/+attachment/4129266/+files/xen-bug.txt -- 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/1313450 Title: Unable to start vsftpd on Ubuntu 14.04 (Amazon/EC2 or Xen) with default configuration Status in “linux” package in Ubuntu: Confirmed Status in “vsftpd” package in Ubuntu: Invalid Status in “linux” source package in Trusty: Confirmed Status in “vsftpd” source package in Trusty: Invalid Bug description: The configuration submitted was modified during testing, but this also failed with the default configuration. The only solution I have found so far was to delete the configuration, this would allow the service to start, but obviously not work as intended. If I try to start the service manually using vsftpd or sudo vsftpd I receive the following error message: 500 OOPS: munmap I also tried the default commands /etc/init.d/vsftpd or service vsftpd start ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: vsftpd 3.0.2-1ubuntu2 ProcVersionSignature: User Name 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 Date: Sun Apr 27 21:23:18 2014 Ec2AMI: ami-896c96fe Ec2AMIManifest: (unknown) Ec2AvailabilityZone: eu-west-1b Ec2InstanceType: t1.micro Ec2Kernel: aki-52a34525 Ec2Ramdisk: unavailable ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: vsftpd UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.vsftpd.conf: [modified] mtime.conffile..etc.vsftpd.conf: 2014-04-27T21:16:28.222467 --- ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 DistroRelease: Ubuntu 14.04 Ec2AMI: ami-896c96fe Ec2AMIManifest: (unknown) Ec2AvailabilityZone: eu-west-1b Ec2InstanceType: t1.micro Ec2Kernel: aki-52a34525 Ec2Ramdisk: unavailable Package: vsftpd 3.0.2-1ubuntu2 PackageArchitecture: amd64 ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: User Name 3.13.0-24.46-generic 3.13.9 Tags: trusty ec2-images Uname: Linux 3.13.0-24-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dialout dip floppy netdev plugdev sudo video _MarkForUpload: True modified.conffile..etc.vsftpd.conf: [modified] mtime.conffile..etc.vsftpd.conf: 2014-04-29T19:03:28.834467 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1313450/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
