This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- raring' to 'verification-done-raring'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-raring -- 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/1238494 Title: Kernel panic on 3.8.0-29 when using ipvs Status in “linux” package in Ubuntu: Fix Released Status in “linux” source package in Raring: Fix Committed Status in “linux” source package in Saucy: Fix Released Bug description: SRU Justification: Impact: A NULL pointer dereferrence will occur when a user adds an IPVS service. This occurs since kernel 3.8.0-28.41 (Raring), after commit: dc7b3eb ipvs: Fix reuse connection if real server is dead The NULL pointer occurs when accessing the ipvs variable in line 1658: 1658 if (unlikely(sysctl_expire_nodest_conn(ipvs)) && cp && cp->dest && 1659 unlikely(!atomic_read(&cp->dest->weight)) && !iph.fragoffs && 1660 is_new_conn(skb, &iph)) { 1661 ip_vs_conn_expire_now(cp); 1662 __ip_vs_conn_put(cp); 1663 cp = NULL; 1664 } Mainline kernel has this variable initialised earlier, with commit: 0c12582 ipvs: add backup_only flag to avoid loops Fix: Apply commit 0c12582 "ipvs: add backup_only flag to avoid loops" fix the problem. Bug reporter has claimed success with a test kernel that contains this commit. Testcase: Simply running the command: sudo ipvsadm -A -u 10.0.50.4:53 Will trigger the bug. --- In kernel 3.8.0-29 and higher (I've tested 3.8.0-30 and 3.8.0-31), the kernel panics when adding IPVS service. Specifically, when I execute the following command: sudo ipvsadm -A -u 10.0.50.4:53 The kernel immediately panics. I've reverted the kernel to 3.8.0-27, and IPVS executes without a problem. The panic is completely reproducable, using a clean install, no extra packages installed, all packages upgraded. I've attached the apport report of the system running 3.8.0-29. Best, Luc van Donkersgoed --- AlsaDevices: total 0 crw-rw---T 1 root audio 116, 1 Oct 11 10:04 seq crw-rw---T 1 root audio 116, 33 Oct 11 10:04 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.9.2-0ubuntu8.3 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory DistroRelease: Ubuntu 13.04 HibernationDevice: RESUME=UUID=566497ef-0abf-42f0-85ee-988bf9ba2034 InstallationDate: Installed on 2012-12-03 (311 days ago) InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64 (20120424.1) IwConfig: eth0 no wireless extensions. lo no wireless extensions. Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 MachineType: VMware, Inc. VMware Virtual Platform MarkForUpload: True Package: linux (not installed) PciMultimedia: ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-31-generic root=/dev/mapper/dnslb01-root ro ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8 RelatedPackageVersions: linux-restricted-modules-3.8.0-31-generic N/A linux-backports-modules-3.8.0-31-generic N/A linux-firmware 1.106 RfKill: Error: [Errno 2] No such file or directory Tags: raring Uname: Linux 3.8.0-31-generic x86_64 UpgradeStatus: Upgraded to raring on 2013-10-10 (0 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 06/22/2012 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: 6.00 dmi.board.name: 440BX Desktop Reference Platform dmi.board.vendor: Intel Corporation dmi.board.version: None dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 1 dmi.chassis.vendor: No Enclosure dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd06/22/2012:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A: dmi.product.name: VMware Virtual Platform dmi.product.version: None dmi.sys.vendor: VMware, Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1238494/+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
