[Kernel-packages] [Bug 1896350] Re: nbd locks system?
** Tags added: sts -- 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/1896350 Title: nbd locks system? Status in linux package in Ubuntu: Confirmed Bug description: I'm trying to use nbd on ubuntu 20.04 like so: qemu-img create -f qcow2 foo.img 500M sudo modprobe nbd sudo qemu-nbd --disconnect /dev/nbd15 || true sudo qemu-nbd --connect=/dev/nbd15 --cache=writeback --format=qcow2 foo.img sudo mkfs.ext4 -L root -O "^64bit" -E nodiscard /dev/nbd15 sudo qemu-nbd --disconnect /dev/nbd15 It seems to work on some systems, but even on those systems, strange things show up in syslog, e.g. Sep 19 15:46:02 thinky kernel: [27042.757768] block nbd15: Possible stuck request dd2d7f93: control (read@135168,126976B). Runtime 450 seconds Sep 19 15:46:26 thinky kernel: [27067.333867] INFO: task systemd-udevd:17364 blocked for more than 241 seconds. and in kern.log, e.g. ... Sep 19 16:17:27 thinky kernel: [ 71.676026] Buffer I/O error on dev nbd15, logical block 7, async page read Sep 19 16:17:27 thinky kernel: [ 71.676049] blk_update_request: I/O error, dev nbd15, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Sep 19 16:17:27 thinky kernel: [ 71.676051] Buffer I/O error on dev nbd15, logical block 0, async page read Sep 19 16:17:27 thinky kernel: [ 71.676061] blk_update_request: I/O error, dev nbd15, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Sep 19 16:17:27 thinky kernel: [ 71.676063] Buffer I/O error on dev nbd15, logical block 1, async page read Sep 19 16:17:27 thinky kernel: [ 71.676147] ldm_validate_partition_table(): Disk read failed. Sep 19 16:17:27 thinky kernel: [ 71.676324] Dev nbd15: unable to read RDB block 0 Sep 19 16:17:27 thinky kernel: [ 71.676473] nbd15: unable to read partition table Sep 19 16:17:27 thinky kernel: [ 71.678340] nbd15: detected capacity change from 0 to 524288000 Sep 19 16:17:27 thinky kernel: [ 71.678536] ldm_validate_partition_table(): Disk read failed. Sep 19 16:17:27 thinky kernel: [ 71.678719] Dev nbd15: unable to read RDB block 0 Sep 19 16:17:27 thinky kernel: [ 71.678947] nbd15: unable to read partition table Sep 19 16:17:27 thinky kernel: [ 71.679985] ldm_validate_partition_table(): Disk read failed. Sep 19 16:17:27 thinky kernel: [ 71.680172] Dev nbd15: unable to read RDB block 0 Sep 19 16:17:27 thinky kernel: [ 71.680366] nbd15: unable to read partition table Sep 19 16:17:27 thinky kernel: [ 71.680647] block nbd15: Attempted send on invalid socket and the system seems to hang on reboot. Also, on another system (an up to date mac, running ubuntu 20.04 in virtualbox), the mkfs.ext4 fails, complaining the device is zero size. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-47-generic 5.4.0-47.51 ProcVersionSignature: Ubuntu 5.4.0-47.51-generic 5.4.55 Uname: Linux 5.4.0-47-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.6 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: dank 2948 F pulseaudio /dev/snd/controlC2: dank 2948 F pulseaudio /dev/snd/controlC0: dank 2948 F pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sat Sep 19 16:28:43 2020 HibernationDevice: RESUME=UUID=7aecd5d3-2f5b-4c07-8867-801e63868a0f InstallationDate: Installed on 2017-04-29 (1239 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) MachineType: LENOVO ThinkServer TS140 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR= LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-47-generic root=UUID=ff9a24e4-277d-4baf-819b-826a33d5bb5e ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-47-generic N/A linux-backports-modules-5.4.0-47-generic N/A linux-firmware1.187.2 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to focal on 2020-05-01 (141 days ago) dmi.bios.date: 09/19/2014 dmi.bios.vendor: LENOVO dmi.bios.version: FBKT99AUS dmi.board.name: ThinkServer TS140 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.type: 7 dmi.chassis.vendor: LENOVO dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnLENOVO:bvrFBKT99AUS:bd09/19/2014:svnLENOVO:pnThinkServerTS140:pvr70A4000HUX:rvnLENOVO:rnThinkServerTS140:rvrNotDefined:cvnLENOVO:ct7:cvrToBeFilledByO.E.M.: dmi.product.family: To be filled by O.E.M. dmi.product.name: ThinkServer TS140 dmi.product.sku: LENOVO_PN_ThinkServer TS140 dmi.product.version: 70A4000HUX dmi.sys.vendor: LENOVO To manage
[Kernel-packages] [Bug 1512815] Re: read() from pty doesn't finish.
Hello, One of our customer tested 3.19.0-41.46 on Ubuntu 15.04 by running test program. Proposed kernel(3.19.0-41.46 kernel): The problem occurred 0 time in 10 running. Conventional kernel: The problem occurred 32 times in 4917 running. -- 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/1512815 Title: read() from pty doesn't finish. Status in linux package in Ubuntu: In Progress Status in linux source package in Trusty: In Progress Status in linux source package in Vivid: Fix Committed Status in linux source package in Wily: Fix Committed Bug description: It has been brought to my attention By the attached test program pty, a pair of process repeats writing and reading only '\n' to a master pseudoterminal device (/dev/ptmx) and a slave pseudoterminal device (/dev/pts/N) each. When we carry out the following 30 pairs 10,000 times, in a pair each process doesn't finish reading. $ pty 30 The following message will be usually indicated immediately. #name copy num/sec usec/num pty_switch 30 1541842 0.648575 When a message wasn't indicated any more, we got the attached dump file. A kernel was 3.13.0-45.74. A system was Ubuntu 14.04 LTS. The same problem occurred in case of 3.13.0-55.92 kernel and the following kernel have been tested as well: 2.6.32, 3.10: not reproduces. 3.19, 4.0.0, 4.1.3: reproduces. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1512815/+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
[Kernel-packages] [Bug 1354234] [NEW] 14.04: PANIC with dcache shrink list corruption? problem
Public bug reported: Hello, 14.04 kernel linux_3.13.0-32.57 panicked because of dcache shrink list corruption? problem. Please see followings: - details at https://lkml.org/lkml/2014/5/2/555. - argument at https://lkml.org/lkml/2014/4/29/402 - patch set at https://lkml.org/lkml/2014/5/4/7 One of 9 patches has been applied to linux_3.13.0-32.57 already. Could you apply other 8 patches to the next 14.04 kernel ? We will need the kernel at the beginning of August badly. If we will not be able to get it, we will not be able to start tests before service in. Could you release it as soon as possible ? We applied other 8 patches to linux_3.13.0-32.57 and now the panic does not occur. Public Bug URL: https://lkml.org/lkml/2014/5/2/555 ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- 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/1354234 Title: 14.04: PANIC with dcache shrink list corruption? problem Status in “linux” package in Ubuntu: New Bug description: Hello, 14.04 kernel linux_3.13.0-32.57 panicked because of dcache shrink list corruption? problem. Please see followings: - details at https://lkml.org/lkml/2014/5/2/555. - argument at https://lkml.org/lkml/2014/4/29/402 - patch set at https://lkml.org/lkml/2014/5/4/7 One of 9 patches has been applied to linux_3.13.0-32.57 already. Could you apply other 8 patches to the next 14.04 kernel ? We will need the kernel at the beginning of August badly. If we will not be able to get it, we will not be able to start tests before service in. Could you release it as soon as possible ? We applied other 8 patches to linux_3.13.0-32.57 and now the panic does not occur. Public Bug URL: https://lkml.org/lkml/2014/5/2/555 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1354234/+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
[Kernel-packages] [Bug 1354234] Re: 14.04: PANIC with dcache shrink list corruption? problem
Hey there, The log files are being collected, I'll attach them later. Thanks, Tom ** Changed in: linux (Ubuntu) Status: Incomplete = Confirmed -- 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/1354234 Title: 14.04: PANIC with dcache shrink list corruption? problem Status in “linux” package in Ubuntu: Confirmed Bug description: Hello, 14.04 kernel linux_3.13.0-32.57 panicked because of dcache shrink list corruption? problem. Please see followings: - details at https://lkml.org/lkml/2014/5/2/555. - argument at https://lkml.org/lkml/2014/4/29/402 - patch set at https://lkml.org/lkml/2014/5/4/7 One of 9 patches has been applied to linux_3.13.0-32.57 already. Could you apply other 8 patches to the next 14.04 kernel ? We will need the kernel at the beginning of August badly. If we will not be able to get it, we will not be able to start tests before service in. Could you release it as soon as possible ? We applied other 8 patches to linux_3.13.0-32.57 and now the panic does not occur. Public Bug URL: https://lkml.org/lkml/2014/5/2/555 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1354234/+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
