Sorry, I mistook this for a comment on another zfs bug that I was watching.
I haven't seen that crash again since the day I reported it. Since it's so rare (happened just once), do you think it's worth it to try the kernel from the ppa? I'd rather not stay away from the official focal kernel for long. -- 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/1870559 Title: Kernel NULL pointer dereference while receiving zfs snapshots Status in linux package in Ubuntu: Triaged Bug description: I was transferring my zfs snapshots to the backup server, when suddenly it stalled. I checked dmesg on the server and found a "kernel bug" entry. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-21-generic 5.4.0-21.25 ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27 Uname: Linux 5.4.0-21-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair AlsaVersion: Advanced Linux Sound Architecture Driver Version k5.4.0-21-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.11-0ubuntu22 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/pcmC0D4p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D2p', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer' Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer' Date: Fri Apr 3 14:48:19 2020 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' MachineType: System manufacturer System Product Name ProcFB: 0 nouveaudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic root=UUID=7934268a-8e6f-11e8-828e-00133b1029de ro mitigations=off maybe-ubiquity RelatedPackageVersions: linux-restricted-modules-5.4.0-21-generic N/A linux-backports-modules-5.4.0-21-generic N/A linux-firmware 1.187 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: Upgraded to focal on 2020-01-19 (75 days ago) dmi.bios.date: 12/23/2008 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0214 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P5LD2-X/1333 dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev x.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: ASUSTek Computer INC. dmi.chassis.version: Rev 1.xx dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0214:bd12/23/2008:svnSystemmanufacturer:pnSystemProductName:pvrRev1.xx:rvnASUSTeKComputerINC.:rnP5LD2-X/1333:rvrRevx.xx:cvnASUSTekComputerINC.:ct3:cvrRev1.xx: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: System Product Name dmi.product.sku: To Be Filled By O.E.M. dmi.product.version: Rev 1.xx dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1870559/+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
