kernel problems; cx23885 hangs

[kex]

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

[kex (kex-iki)]

another two excerpts from syslog

May 1 13:56:47 xpc kernel: [85171.089467] INFO: task section handler:2730 blocked for more than 120 seconds.
May 1 13:56:47 xpc kernel: [85171.089470] Tainted: G OE 3.19.0-15-generic #15-Ubuntu
May 1 13:56:47 xpc kernel: [85171.089471] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 1 13:56:47 xpc kernel: [85171.089472] section handler D ffff8800b31c7c08 0 2730 2590 0x00000000
May 1 13:56:47 xpc kernel: [85171.089475] ffff8800b31c7c08 ffff8801b5ee3ae0 0000000000014200 ffff8800b31c7fd8
May 1 13:56:47 xpc kernel: [85171.089477] 0000000000014200 ffff8801b8278000 ffff8801b5ee3ae0 ffff8800b31c7be8
May 1 13:56:47 xpc kernel: [85171.089478] ffff8801400bbf10 7fffffffffffffff ffff8801400bbf08 ffff8801b5ee3ae0
May 1 13:56:47 xpc kernel: [85171.089480] Call Trace:
May 1 13:56:47 xpc kernel: [85171.089486] [<ffffffff817c49c9>] schedule+0x29/0x70
May 1 13:56:47 xpc kernel: [85171.089489] [<ffffffff817c7fac>] schedule_timeout+0x20c/0x280
May 1 13:56:47 xpc kernel: [85171.089494] [<ffffffff811811a7>] ? __free_pages+0x27/0x30
May 1 13:56:47 xpc kernel: [85171.089496] [<ffffffff811811f0>] ? free_pages.part.67+0x40/0x50
May 1 13:56:47 xpc kernel: [85171.089497] [<ffffffff81181213>] ? free_pages+0x13/0x20
May 1 13:56:47 xpc kernel: [85171.089499] [<ffffffff817c6384>] wait_for_completion+0xa4/0x170
May 1 13:56:47 xpc kernel: [85171.089502] [<ffffffff810a1dd0>] ? wake_up_state+0x20/0x20
May 1 13:56:47 xpc kernel: [85171.089505] [<ffffffff810949d3>] kthread_stop+0x53/0x100
May 1 13:56:47 xpc kernel: [85171.089517] [<ffffffffc06d1aa4>] vb2_thread_stop+0x64/0xd0 [videobuf2_core]
May 1 13:56:47 xpc kernel: [85171.089519] [<ffffffffc077113e>] vb2_dvb_stop_feed+0x4e/0x70 [videobuf2_dvb]
May 1 13:56:47 xpc kernel: [85171.089524] [<ffffffffc07156ab>] dmx_section_feed_stop_filtering+0x4b/0xe0 [dvb_core]
May 1 13:56:47 xpc kernel: [85171.089527] [<ffffffffc0712b5b>] dvb_dmxdev_feed_stop+0xeb/0x100 [dvb_core]
May 1 13:56:47 xpc kernel: [85171.089530] [<ffffffffc0712d5c>] dvb_dmxdev_filter_stop+0x9c/0xe0 [dvb_core]
May 1 13:56:47 xpc kernel: [85171.089533] [<ffffffffc0713248>] dvb_demux_release+0x48/0x260 [dvb_core]
May 1 13:56:47 xpc kernel: [85171.089537] [<ffffffff811f4f97>] __fput+0xe7/0x250
May 1 13:56:47 xpc kernel: [85171.089539] [<ffffffff811f514e>] ____fput+0xe/0x10
May 1 13:56:47 xpc kernel: [85171.089541] [<ffffffff81092d24>] task_work_run+0xd4/0xf0
May 1 13:56:47 xpc kernel: [85171.089544] [<ffffffff81014ff7>] do_notify_resume+0x97/0xb0
May 1 13:56:47 xpc kernel: [85171.089546] [<ffffffff817c95ef>] int_signal+0x12/0x17

May 1 13:58:47 xpc kernel: [85291.048580] INFO: task section handler:2730 blocked for more than 120 seconds.
May 1 13:58:47 xpc kernel: [85291.048584] Tainted: G OE 3.19.0-15-generic #15-Ubuntu
May 1 13:58:47 xpc kernel: [85291.048585] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 1 13:58:47 xpc kernel: [85291.048586] section handler D ffff8800b31c7c08 0 2730 2590 0x00000000
May 1 13:58:47 xpc kernel: [85291.048589] ffff8800b31c7c08 ffff8801b5ee3ae0 00...

[Brad Figg (brad-figg)]

This change was made by a bot.

[penalvch (penalvch)]

kex, thank you for reporting this bug and helping make Ubuntu better. Could you please test the latest upstream kernel available from the very top line at the top of the page (the release names are irrelevant for testing, and please do not test the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue.

If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-X.Y-rcZ

Where XY and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-X.Y-rcZ

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results.

Thank you for your understanding.

[kex (kex-iki)]

Tested for 48hours now with 4.1-rc1 and no problems.

 uname -a
Linux xpc 4.1.0-040100rc1-generic #201504270235 SMP Mon Apr 27 02:36:47 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

[penalvch (penalvch)]

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

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]