This issue is still present. Possibly fixed by upstream commit https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/md?id=a685557fbbc3122ed11e8ad3fa63a11ebc5de8c3
https://www.redhat.com/archives/dm-devel/2018-April/msg00022.html kernel: [8860597.921484] kernel BUG at /build/linux-hwe-okqLve/linux-hwe-4.15.0/drivers/md/persistent-data/dm-space-map-disk.c:178! kernel: [8860597.921579] invalid opcode: 0000 [#1] SMP PTI kernel: [8860597.921640] Modules linked in: cpuid cmac arc4 md4 nls_utf8 cifs ccm fscache dm_snapshot dccp_diag dccp tcp_diag udp_diag inet_diag unix_diag af_packet_diag netlink_diag xt_CHECKSUM xt_nat iptable_nat nf_nat_ipv4 iptable_mangle xt_CT iptable_raw veth dummy nf_conntrack_ipv4 nf_defrag_ipv4 bridge iptable_filter ip_tables xt_tcpudp nf_conntrack_ipv6 nf_defrag_ipv6 xt_conntrack ip6table_filter ip6_tables x_tables vhost_net vhost tap intel_rapl skx_edac x86_pkg_temp_thermal intel_powerclamp coretemp dm_thin_pool kvm_intel dm_persistent_data dm_bio_prison kvm dm_bufio irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd ipmi_ssif glue_helper cryptd intel_cstate intel_rapl_perf lpc_ich shpchp ioatdma dca acpi_pad acpi_power_meter mac_hid ipmi_si ipmi_devintf kernel: [8860597.921973] ipmi_msghandler nf_nat_ftp nf_conntrack_ftp nf_nat_sip nf_conntrack_sip nf_nat_pptp nf_conntrack_pptp nf_nat_proto_gre nf_nat nf_conntrack_proto_gre nf_conntrack tcp_htcp 8021q garp mrp stp llc bonding autofs4 btrfs zstd_compress raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid0 multipath linear raid1 raid10 i40e i2c_algo_bit ttm ptp drm_kms_helper pps_core syscopyarea nvme sysfillrect sysimgblt fb_sys_fops nvme_core drm ahci libahci wmi kernel: [8860597.922282] CPU: 38 PID: 1917945 Comm: kworker/u128:2 Not tainted 4.15.0-31-generic #33~16.04.1-Ubuntu kernel: [8860597.922413] Hardware name: Quanta Cloud Technology Inc. QuantaGrid D52B-1U/S5B-MB (LBG-4), BIOS 3A10.10 02/12/2018 kernel: [8860597.922554] Workqueue: dm-thin do_worker [dm_thin_pool] kernel: [8860597.922650] RIP: 0010:sm_disk_new_block+0xa1/0xb0 [dm_persistent_data] kernel: [8860597.922747] RSP: 0018:ffffbfa19dc7fc68 EFLAGS: 00010297 kernel: [8860597.922839] RAX: 0000000000000000 RBX: ffff9e6c63f0c000 RCX: 0000000000000000 kernel: [8860597.922962] RDX: ffff9e6c3768d940 RSI: 0000000000000282 RDI: ffff9eb4dc4f3400 kernel: [8860597.923086] RBP: ffffbfa19dc7fc90 R08: 0000000000000000 R09: ffffbfa19dc7f9f0 kernel: [8860597.923211] R10: ffffbfa19dc7f8f8 R11: ffffbfa19dc7fb48 R12: 0000000000000000 kernel: [8860597.923335] R13: ffffbfa19dc7fd40 R14: ffffbfa19dc7fd40 R15: ffff9e47cb3460e0 kernel: [8860597.923460] FS: 0000000000000000(0000) GS:ffff9e6cb0380000(0000) knlGS:0000000000000000 kernel: [8860597.923587] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kernel: [8860597.923678] CR2: 00000000009cfd20 CR3: 0000008d2400a003 CR4: 00000000007626e0 kernel: [8860597.923802] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kernel: [8860597.923926] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kernel: [8860597.924049] PKRU: 55555554 kernel: [8860597.924130] Call Trace: kernel: [8860597.924217] dm_pool_alloc_data_block+0x44/0x60 [dm_thin_pool] kernel: [8860597.924310] alloc_data_block.isra.53+0x6f/0x180 [dm_thin_pool] kernel: [8860597.924404] process_cell+0x2cf/0x4d0 [dm_thin_pool] kernel: [8860597.924498] ? mempool_alloc_slab+0x15/0x20 kernel: [8860597.924585] ? mempool_alloc+0x73/0x180 kernel: [8860597.924671] ? process_prepared+0x8d/0xc0 [dm_thin_pool] kernel: [8860597.924762] do_worker+0x25c/0x8b0 [dm_thin_pool] kernel: [8860597.924855] process_one_work+0x14d/0x410 kernel: [8860597.924942] ? process_discard_cell_passdown+0x1e0/0x1e0 [dm_thin_pool] kernel: [8860597.925037] ? process_one_work+0x14d/0x410 kernel: [8860597.925124] worker_thread+0x4b/0x460 kernel: [8860597.925210] kthread+0x105/0x140 kernel: [8860597.925294] ? process_one_work+0x410/0x410 kernel: [8860597.925381] ? kthread_associate_blkcg+0xa0/0xa0 kernel: [8860597.925473] ret_from_fork+0x35/0x40 kernel: [8860597.925558] Code: c0 01 48 89 83 20 22 00 00 49 8b 75 00 e8 68 f7 ff ff 85 c0 75 10 83 7d dc 01 75 0f 48 83 83 28 22 00 00 01 eb af 41 89 c4 eb aa <0f> 0b e8 08 0c bf d0 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55. kernel: [8860597.925779] RIP: sm_disk_new_block+0xa1/0xb0 [dm_persistent_data] RSP: ffffbfa19dc7fc68 kernel: [8860597.925961] ---[ end trace dfde9f8a30119f50 ]--- ** Changed in: linux (Ubuntu) Status: Expired => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1777398 Title: dm thin block allocation failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1777398/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs