[Kernel-packages] [Bug 1737817] Re: artful bcache NULL pointer defererence
[Expired for linux (Ubuntu) because there has been no activity for 60 days.] ** Changed in: linux (Ubuntu) Status: Incomplete => Expired -- 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/1737817 Title: artful bcache NULL pointer defererence Status in linux package in Ubuntu: Expired Bug description: [ 20.935396] BUG: unable to handle kernel NULL pointer dereference at 0b84 [ 20.936130] IP: _raw_spin_lock_irqsave+0x22/0x40 [ 20.936540] PGD 0 [ 20.936540] P4D 0 [ 20.936725] [ 20.937117] Oops: 0002 [#1] SMP [ 20.937570] Modules linked in: bcache psmouse virtio_blk virtio_net virtio_scsi pata_acpi floppy [ 20.937686] bcache: bch_journal_replay() journal replay done, 558 keys in 30 entries, seq 593 [ 20.937782] bcache: register_cache() registered cache device vdc [ 20.940029] CPU: 0 PID: 176 Comm: bcache_allocato Not tainted 4.13.0-19-generic #22-Ubuntu [ 20.940825] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 20.942112] task: 95c0ef878000 task.stack: a8f1c0394000 [ 20.942903] RIP: 0010:_raw_spin_lock_irqsave+0x22/0x40 [ 20.943606] RSP: 0018:a8f1c0397d00 EFLAGS: 00010046 [ 20.944232] RAX: RBX: 0246 RCX: [ 20.944849] RDX: 0001 RSI: 0003 RDI: 0b84 [ 20.945503] RBP: a8f1c0397d08 R08: c0376a20 R09: aaab [ 20.946125] R10: a8f1c0369000 R11: 95c0fd120e78 R12: 0b84 [ 20.946745] R13: R14: 0021 R15: [ 20.947366] FS: () GS:95c0ffc0() knlGS: [ 20.948112] CS: 0010 DS: ES: CR0: 80050033 [ 20.948124] bcache: register_bdev() registered backing device vda2 [ 20.949494] CR2: 0b84 CR3: 2fb8e000 CR4: 06f0 [ 20.950311] Call Trace: [ 20.950607] try_to_wake_up+0x40/0x480 [ 20.951048] wake_up_process+0x15/0x20 [ 20.951490] bch_bucket_alloc+0xa5/0x320 [bcache] [ 20.952043] ? wait_woken+0x80/0x80 [ 20.952387] bch_prio_write+0x19f/0x340 [bcache] [ 20.952797] bch_allocator_thread+0x569/0xc80 [bcache] [ 20.953546] kthread+0x125/0x140 [ 20.953869] ? bch_invalidate_one_bucket+0x80/0x80 [bcache] [ 20.954363] ? kthread_create_on_node+0x70/0x70 [ 20.954764] ret_from_fork+0x25/0x30 [ 20.955083] Code: ff 66 90 5d c3 0f 1f 40 00 0f 1f 44 00 00 55 48 89 e5 53 9c 58 0f 1f 44 00 00 48 89 c3 fa 66 0f 1f 44 00 00 31 c0 ba 01 00 00 00 0f b1 17 85 c0 75 06 48 89 d8 5b 5d c3 89 c6 e8 19 63 7c ff [ 20.956770] RIP: _raw_spin_lock_irqsave+0x22/0x40 RSP: a8f1c0397d00 [ 20.957579] CR2: 0b84 [ 20.958038] ---[ end trace 2fbf49a9fcc4299e ]--- [ 21.088078] tsc: Refined TSC clocksource calibration: 2397.221 MHz [ 21.089038] clocksource: tsc: mask: 0x max_cycles: 0x228df650ba8, max_idle_ns: 440795214877 ns Begin: Loading essential drivers ... [ 203.088012] raid6: sse2x1 gen() 5302 MB/s Launched a vm like this: qemu-system-x86_64 -enable-kvm \ -device virtio-scsi-pci,id=virtio-scsi-xkvm \ -device virtio-net-pci,netdev=net00 -netdev type=user,id=net00 \ -drive file=/var/lib/jenkins/slaves/torkoal/workspace/curtin-vmtest-devel-amd64/output/ArtfulBcacheBasic/disks/install_disk.img,id=disk00,if=none,format=raw,index=0 \ -device virtio-blk,drive=disk00,serial=install_disk.img,logical_block_size=512,physical_block_size=512,min_io_size=512 \ -drive file=/var/lib/jenkins/slaves/torkoal/workspace/curtin-vmtest-devel-amd64/output/ArtfulBcacheBasic/boot/output_disk.img,id=disk01,if=none,format=raw,index=1 \ -device virtio-blk,drive=disk01,serial=output_disk.img,logical_block_size=512,physical_block_size=512,min_io_size=512 \ -drive file=/var/lib/jenkins/slaves/torkoal/workspace/curtin-vmtest-devel-amd64/output/ArtfulBcacheBasic/disks/extra_disk_0.img,id=disk02,if=none,format=raw,index=2 \ -device virtio-blk,drive=disk02,serial=extra_disk_0.img,logical_block_size=512,physical_block_size=512,min_io_size=512 \ -drive file=/var/lib/jenkins/slaves/torkoal/workspace/curtin-vmtest-devel-amd64/output/ArtfulBcacheBasic/boot/seed.img,id=disk03,if=none,format=raw,index=3,media=cdrom -device virtio-blk,drive=disk03,serial=seed.img -smp 2 -m 1024 -nographic -serial file:/var/lib/jenkins/slaves/torkoal/workspace/curtin-vmtest-devel-amd64/output/ArtfulBcacheBasic/logs/boot-serial.log To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1737817/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe :
[Kernel-packages] [Bug 1737817] Re: artful bcache NULL pointer defererence
Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem? Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.15 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15-rc3 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Tags added: kernel-da-key -- 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/1737817 Title: artful bcache NULL pointer defererence Status in linux package in Ubuntu: Incomplete Bug description: [ 20.935396] BUG: unable to handle kernel NULL pointer dereference at 0b84 [ 20.936130] IP: _raw_spin_lock_irqsave+0x22/0x40 [ 20.936540] PGD 0 [ 20.936540] P4D 0 [ 20.936725] [ 20.937117] Oops: 0002 [#1] SMP [ 20.937570] Modules linked in: bcache psmouse virtio_blk virtio_net virtio_scsi pata_acpi floppy [ 20.937686] bcache: bch_journal_replay() journal replay done, 558 keys in 30 entries, seq 593 [ 20.937782] bcache: register_cache() registered cache device vdc [ 20.940029] CPU: 0 PID: 176 Comm: bcache_allocato Not tainted 4.13.0-19-generic #22-Ubuntu [ 20.940825] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 20.942112] task: 95c0ef878000 task.stack: a8f1c0394000 [ 20.942903] RIP: 0010:_raw_spin_lock_irqsave+0x22/0x40 [ 20.943606] RSP: 0018:a8f1c0397d00 EFLAGS: 00010046 [ 20.944232] RAX: RBX: 0246 RCX: [ 20.944849] RDX: 0001 RSI: 0003 RDI: 0b84 [ 20.945503] RBP: a8f1c0397d08 R08: c0376a20 R09: aaab [ 20.946125] R10: a8f1c0369000 R11: 95c0fd120e78 R12: 0b84 [ 20.946745] R13: R14: 0021 R15: [ 20.947366] FS: () GS:95c0ffc0() knlGS: [ 20.948112] CS: 0010 DS: ES: CR0: 80050033 [ 20.948124] bcache: register_bdev() registered backing device vda2 [ 20.949494] CR2: 0b84 CR3: 2fb8e000 CR4: 06f0 [ 20.950311] Call Trace: [ 20.950607] try_to_wake_up+0x40/0x480 [ 20.951048] wake_up_process+0x15/0x20 [ 20.951490] bch_bucket_alloc+0xa5/0x320 [bcache] [ 20.952043] ? wait_woken+0x80/0x80 [ 20.952387] bch_prio_write+0x19f/0x340 [bcache] [ 20.952797] bch_allocator_thread+0x569/0xc80 [bcache] [ 20.953546] kthread+0x125/0x140 [ 20.953869] ? bch_invalidate_one_bucket+0x80/0x80 [bcache] [ 20.954363] ? kthread_create_on_node+0x70/0x70 [ 20.954764] ret_from_fork+0x25/0x30 [ 20.955083] Code: ff 66 90 5d c3 0f 1f 40 00 0f 1f 44 00 00 55 48 89 e5 53 9c 58 0f 1f 44 00 00 48 89 c3 fa 66 0f 1f 44 00 00 31 c0 ba 01 00 00 00 0f b1 17 85 c0 75 06 48 89 d8 5b 5d c3 89 c6 e8 19 63 7c ff [ 20.956770] RIP: _raw_spin_lock_irqsave+0x22/0x40 RSP: a8f1c0397d00 [ 20.957579] CR2: 0b84 [ 20.958038] ---[ end trace 2fbf49a9fcc4299e ]--- [ 21.088078] tsc: Refined TSC clocksource calibration: 2397.221 MHz [ 21.089038] clocksource: tsc: mask: 0x max_cycles: 0x228df650ba8, max_idle_ns: 440795214877 ns Begin: Loading essential drivers ... [ 203.088012] raid6: sse2x1 gen() 5302 MB/s Launched a vm like this: qemu-system-x86_64 -enable-kvm \ -device virtio-scsi-pci,id=virtio-scsi-xkvm \ -device virtio-net-pci,netdev=net00 -netdev type=user,id=net00 \ -drive file=/var/lib/jenkins/slaves/torkoal/workspace/curtin-vmtest-devel-amd64/output/ArtfulBcacheBasic/disks/install_disk.img,id=disk00,if=none,format=raw,index=0 \ -device virtio-blk,drive=disk00,serial=install_disk.img,logical_block_size=512,physical_block_size=512,min_io_size=512 \ -drive file=/var/lib/jenkins/slaves/torkoal/workspace/curtin-vmtest-devel-amd64/output/ArtfulBcacheBasic/boot/output_disk.img,id=disk01,if=none,format=raw,index=1 \ -device virtio-blk,drive=disk01,serial=output_disk.img,logical_block_size=512,physical_block_size=512,min_io_size=512 \ -drive file=/var/lib/jenkins/slaves/torkoal/workspace/curtin-vmtest-devel-amd64/output/ArtfulBcacheBasic/disks/extra_disk_0.img,id=disk02,if=none,format=raw,index=2 \ -device virtio-blk,drive=disk02,serial=extra_disk_0.img,logical_block_size=512,physical_block_size=512,min_io_size=512 \ -drive
