kex, the next step is to fully reverse commit bisect from kernel 3.19 to 4.1-rc1 in order to identify the last bad commit, followed immediately by the first good one. Once this commit has been identified, then it may be reviewed as a candidate for backporting into your release. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F ?
Please note, finding adjacent kernel versions is not fully commit bisecting. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Tags added: needs-reverse-bisect ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1451009 Title: kernel problems; cx23885 hangs Status in linux package in Ubuntu: Incomplete Bug description: After a few hours, cx23885 card hangs (linux-image-generic drivers, firmware from the openelec site). It zombifies vdr and then later prevents the system from shutting down RAID cleanly. May 1 13:14:47 xpc kernel: [82651.948000] INFO: task systemd-udevd:414 blocked for more than 120 seconds. May 1 13:14:47 xpc kernel: [82651.948003] Tainted: G OE 3.19.0-15-generic #15-Ubuntu May 1 13:14:47 xpc kernel: [82651.948004] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 1 13:14:47 xpc kernel: [82651.948005] systemd-udevd D ffff8801b4667ac8 0 414 1 0x00000000 May 1 13:14:47 xpc kernel: [82651.948008] ffff8801b4667ac8 ffff8800b26c44b0 0000000000014200 ffff8801b4667fd8 May 1 13:14:47 xpc kernel: [82651.948009] 0000000000014200 ffff8801b8278000 ffff8800b26c44b0 0000000000800060 May 1 13:14:47 xpc kernel: [82651.948011] ffff8801b77289d8 ffff8801b77289dc ffff8800b26c44b0 00000000ffffffff May 1 13:14:47 xpc kernel: [82651.948013] Call Trace: May 1 13:14:47 xpc kernel: [82651.948019] [<ffffffff817c4f19>] schedule_preempt_disabled+0x29/0x70 May 1 13:14:47 xpc kernel: [82651.948021] [<ffffffff817c6dd5>] __mutex_lock_slowpath+0x95/0x100 May 1 13:14:47 xpc kernel: [82651.948023] [<ffffffff817c6e63>] mutex_lock+0x23/0x40 May 1 13:14:47 xpc kernel: [82651.948026] [<ffffffff8122d1d3>] __blkdev_get+0x63/0x490 May 1 13:14:47 xpc kernel: [82651.948028] [<ffffffff8122d641>] blkdev_get+0x41/0x390 May 1 13:14:47 xpc kernel: [82651.948030] [<ffffffff8122d9f0>] ? blkdev_get_by_dev+0x60/0x60 May 1 13:14:47 xpc kernel: [82651.948032] [<ffffffff8122da4f>] blkdev_open+0x5f/0x90 May 1 13:14:47 xpc kernel: [82651.948035] [<ffffffff811f0932>] do_dentry_open+0x1d2/0x330 May 1 13:14:47 xpc kernel: [82651.948036] [<ffffffff811f0bf9>] vfs_open+0x49/0x50 May 1 13:14:47 xpc kernel: [82651.948039] [<ffffffff812016c7>] do_last+0x227/0x12c0 May 1 13:14:47 xpc kernel: [82651.948042] [<ffffffff81203d68>] path_openat+0x88/0x610 May 1 13:14:47 xpc kernel: [82651.948044] [<ffffffff811a68fc>] ? tlb_finish_mmu+0x1c/0x50 May 1 13:14:47 xpc kernel: [82651.948046] [<ffffffff8120550a>] do_filp_open+0x3a/0xb0 May 1 13:14:47 xpc kernel: [82651.948048] [<ffffffff812122f7>] ? __alloc_fd+0xa7/0x130 May 1 13:14:47 xpc kernel: [82651.948050] [<ffffffff811f254a>] do_sys_open+0x12a/0x280 May 1 13:14:47 xpc kernel: [82651.948052] [<ffffffff811f26be>] SyS_open+0x1e/0x20 May 1 13:14:47 xpc kernel: [82651.948055] [<ffffffff817c934d>] system_call_fastpath+0x16/0x1b and for the other frontend of my DVBSly T980C a couple of minutes later: May 1 13:16:47 xpc kernel: [82771.907123] INFO: task systemd-udevd:414 blocked for more than 120 seconds. May 1 13:16:47 xpc kernel: [82771.907126] Tainted: G OE 3.19.0-15-generic #15-Ubuntu May 1 13:16:47 xpc kernel: [82771.907127] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 1 13:16:47 xpc kernel: [82771.907128] systemd-udevd D ffff8801b4667ac8 0 414 1 0x00000000 May 1 13:16:47 xpc kernel: [82771.907131] ffff8801b4667ac8 ffff8800b26c44b0 0000000000014200 ffff8801b4667fd8 May 1 13:16:47 xpc kernel: [82771.907133] 0000000000014200 ffff8801b8278000 ffff8800b26c44b0 0000000000800060 May 1 13:16:47 xpc kernel: [82771.907134] ffff8801b77289d8 ffff8801b77289dc ffff8800b26c44b0 00000000ffffffff May 1 13:16:47 xpc kernel: [82771.907136] Call Trace: May 1 13:16:47 xpc kernel: [82771.907142] [<ffffffff817c4f19>] schedule_preempt_disabled+0x29/0x70 May 1 13:16:47 xpc kernel: [82771.907144] [<ffffffff817c6dd5>] __mutex_lock_slowpath+0x95/0x100 May 1 13:16:47 xpc kernel: [82771.907146] [<ffffffff817c6e63>] mutex_lock+0x23/0x40 May 1 13:16:47 xpc kernel: [82771.907149] [<ffffffff8122d1d3>] __blkdev_get+0x63/0x490 May 1 13:16:47 xpc kernel: [82771.907151] [<ffffffff8122d641>] blkdev_get+0x41/0x390 May 1 13:16:47 xpc kernel: [82771.907153] [<ffffffff8122d9f0>] ? blkdev_get_by_dev+0x60/0x60 May 1 13:16:47 xpc kernel: [82771.907154] [<ffffffff8122da4f>] blkdev_open+0x5f/0x90 May 1 13:16:47 xpc kernel: [82771.907158] [<ffffffff811f0932>] do_dentry_open+0x1d2/0x330 May 1 13:16:47 xpc kernel: [82771.907159] [<ffffffff811f0bf9>] vfs_open+0x49/0x50 May 1 13:16:47 xpc kernel: [82771.907162] [<ffffffff812016c7>] do_last+0x227/0x12c0 May 1 13:16:47 xpc kernel: [82771.907164] [<ffffffff81203d68>] path_openat+0x88/0x610 May 1 13:16:47 xpc kernel: [82771.907167] [<ffffffff811a68fc>] ? tlb_finish_mmu+0x1c/0x50 May 1 13:16:47 xpc kernel: [82771.907169] [<ffffffff8120550a>] do_filp_open+0x3a/0xb0 May 1 13:16:47 xpc kernel: [82771.907171] [<ffffffff812122f7>] ? __alloc_fd+0xa7/0x130 May 1 13:16:47 xpc kernel: [82771.907172] [<ffffffff811f254a>] do_sys_open+0x12a/0x280 May 1 13:16:47 xpc kernel: [82771.907174] [<ffffffff811f26be>] SyS_open+0x1e/0x20 May 1 13:16:47 xpc kernel: [82771.907176] [<ffffffff817c934d>] system_call_fastpath+0x16/0x1b lsb_release -rd Description: Ubuntu 15.04 Release: 15.04 kex@xpc:~$ apt-cache policy linux-image-extra-3.19.0-15-generic linux-image-extra-3.19.0-15-generic: Asennettu: 3.19.0-15.15 Ehdokas: 3.19.0-15.15 Versiotaulukko: *** 3.19.0-15.15 0 500 http://fi.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages 100 /var/lib/dpkg/status kex@xpc:~$ apt-cache policy linux-image-generic linux-image-generic: Asennettu: 3.19.0.15.14 Ehdokas: 3.19.0.15.14 Versiotaulukko: *** 3.19.0.15.14 0 500 http://fi.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages 100 /var/lib/dpkg/status kex@xpc:~$ ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-generic 3.19.0.15.14 ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 Uname: Linux 3.19.0-15-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: kex 2431 F.... pulseaudio /dev/snd/controlC0: kex 2431 F.... pulseaudio CurrentDesktop: Unity Date: Sat May 2 13:42:04 2015 HibernationDevice: RESUME=UUID=36e8bbe2-fb57-4154-aeaf-f5a4f3d1b467 InstallationDate: Installed on 2012-12-22 (860 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) IwConfig: eth1 no wireless extensions. lo no wireless extensions. MachineType: ASUS All Series ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=a21f1300-e2a3-44c9-a667-86fc6184627b ro nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw RelatedPackageVersions: linux-restricted-modules-3.19.0-15-generic N/A linux-backports-modules-3.19.0-15-generic N/A linux-firmware 1.143 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to vivid on 2015-04-23 (8 days ago) dmi.bios.date: 08/15/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1603 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: MAXIMUS VI EXTREME dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1603:bd08/15/2014:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnMAXIMUSVIEXTREME:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: All Series dmi.product.version: System Version dmi.sys.vendor: ASUS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1451009/+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
