Error mounting encrypted volume

[jpfingstmann]

System information

Type	Version/Name
Distribution Name	Kubuntu
Distribution Version	18.10
Linux Kernel	Linux melchior 4.18.0-16-generic #17-Ubuntu SMP Fri Feb 8 00:06:57 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Architecture	x86_64
ZFS Version	0.8.0-rc3_66_gf8bb2a7e0
SPL Version	0.8.0-rc3_66_gf8bb2a7e0

Describe the problem you're observing

I have an encrypted path that has lots of smaller files in it. I was able to mount it without a problem and use it, although with heavy use, I was getting an error and the filesystem would hang until rebooted. I changed to USB 2.0 as I had seen errors related to USB and was testing when it crashed again when doing a chown -R in the encrypted directory. Upon reboot, I updated the pool, as I've been reluctant to do so and was hoping that would help. Once I imported the pool, I ran the zpool upgrade and then ran zfs load-key -a, put in the key (which was accepted) and did a zfs mount -a (at this point it did something (with heavy i/o) for about 2 minutes before returning i/o error and dmesg showed the crash as listed below.

Include any warning/errors/backtraces from the system logs

[  698.738447] BUG: unable to handle kernel NULL pointer dereference at 0000000000000001
[  698.738450] PGD 0 P4D 0 
[  698.738452] Oops: 0010 [#1] SMP PTI
[  698.738454] CPU: 3 PID: 12176 Comm: mount.zfs Tainted: P           OE     4.18.0-16-generic #17-Ubuntu
[  698.738455] Hardware name: Gigabyte Technology Co., Ltd. Z97X-SLI/Z97X-SLI-CF, BIOS F9 09/18/2015
[  698.738457] RIP: 0010:0x1
[  698.738458] Code: Bad RIP value.
[  698.738461] RSP: 0018:ffffb934c3c9b000 EFLAGS: 00010202
[  698.738463] RAX: 0000000000000001 RBX: ffff8e3cf0c602b8 RCX: 0000000000000001
[  698.738464] RDX: 0000000000000008 RSI: ffffb934c3c9b01c RDI: ffffb934c3c9b020
[  698.738465] RBP: ffffb934c3c9b058 R08: 0000000000000008 R09: 0000000000000001
[  698.738466] R10: ffff8e3e54cb6900 R11: ffff8e3dc11ef400 R12: 0000000000000000
[  698.738467] R13: ffff8e3d28210320 R14: ffff8e3d716af000 R15: 0000000000000008
[  698.738468] FS:  00007f476c0657c0(0000) GS:ffff8e3e7ecc0000(0000) knlGS:0000000000000000
[  698.738469] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  698.738470] CR2: ffffffffffffffd7 CR3: 00000007c9848004 CR4: 00000000001606e0
[  698.738471] Call Trace:
[  698.738522]  ? sa_copy_data+0x5d/0xc0 [zfs]
[  698.738527]  ? spl_kmem_alloc+0xe9/0x130 [spl]
[  698.738555]  sa_build_layouts+0x262/0x910 [zfs]
[  698.738559]  ? spl_kmem_zalloc+0xdf/0x130 [spl]
[  698.738586]  sa_modify_attrs+0x29f/0x410 [zfs]
[  698.738614]  sa_attr_op+0x289/0x3f0 [zfs]
[  698.738641]  sa_bulk_update_impl+0x65/0x100 [zfs]
[  698.738669]  sa_bulk_update+0x55/0x90 [zfs]
[  698.738698]  zfs_setattr_dir+0x2da/0x500 [zfs]
[  698.738719]  ? dmu_buf_will_dirty+0x16/0x20 [zfs]
[  698.738722]  ? spl_kmem_free+0x33/0x40 [spl]
[  698.738744]  ? dmu_tx_destroy+0xd8/0xf0 [zfs]
[  698.738773]  zfs_setattr+0x1c9d/0x21d0 [zfs]
[  698.738776]  ? _cond_resched+0x19/0x30
[  698.738779]  ? __kmalloc_node+0x204/0x2c0
[  698.738782]  ? spl_kmem_zalloc+0xdf/0x130 [spl]
[  698.738785]  ? spl_kmem_zalloc+0xdf/0x130 [spl]
[  698.738813]  ? zfs_fuid_info_alloc+0x21/0x60 [zfs]
[  698.738842]  zfs_replay_setattr+0x16f/0x210 [zfs]
[  698.738871]  zil_replay_log_record+0xb2/0x1a0 [zfs]
[  698.738900]  ? zil_replay_error.isra.21+0xa0/0xa0 [zfs]
[  698.738928]  zil_parse+0x65b/0x8f0 [zfs]
[  698.738956]  ? zil_replay_error.isra.21+0xa0/0xa0 [zfs]
[  698.738985]  ? zil_set_logbias+0x20/0x20 [zfs]
[  698.739014]  zil_replay+0xbc/0x120 [zfs]
[  698.739043]  zfsvfs_setup+0x165/0x200 [zfs]
[  698.739073]  zfs_domount+0x379/0x3e0 [zfs]
[  698.739102]  zpl_mount+0x142/0x180 [zfs]
[  698.739105]  mount_fs+0x3d/0x155
[  698.739107]  vfs_kern_mount.part.36+0x5d/0x110
[  698.739109]  do_mount+0x213/0xcf0
[  698.739111]  ? copy_mount_options+0x2c/0x220
[  698.739113]  ksys_mount+0xbf/0xe0
[  698.739114]  __x64_sys_mount+0x25/0x30
[  698.739118]  do_syscall_64+0x5a/0x110
[  698.739120]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  698.739121] RIP: 0033:0x7f476c8a190a
[  698.739122] Code: 48 8b 0d 89 85 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 56 85 0c 00 f7 d8 64 89 01 48 
[  698.739140] RSP: 002b:00007ffd01ff2438 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[  698.739141] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f476c8a190a
[  698.739142] RDX: 000055f04d47d11b RSI: 00007ffd01ff6580 RDI: 00007ffd01ff883b
[  698.739143] RBP: 0000000000000005 R08: 00007ffd01ff3580 R09: 0000000000000000
[  698.739144] R10: 0000000001000000 R11: 0000000000000246 R12: 000055f04d4a75d0
[  698.739145] R13: 00007ffd01ff2580 R14: 0000000000000000 R15: 00007ffd01ff3580
[  698.739146] Modules linked in: zfs(POE) zavl(POE) icp(POE) zcommon(POE) znvpair(POE) spl(OE) pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) nfsv3 nfs_acl nfs lockd grace fscache xt_nat xt_tcpudp veth vxlan ip6_udp_tunnel udp_tunnel iptable_mangle xt_mark xt_conntrack ipt_MASQUERADE nfnetlink xfrm_user xfrm_algo iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_addrtype bpfilter overlay aufs binfmt_misc zunicode(POE) zlua(POE) snd_hda_codec_hdmi mxm_wmi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass snd_soc_rt5640 snd_soc_rl6231 snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine snd_seq_midi snd_seq_midi_event snd_rawmidi snd_hda_intel snd_hda_codec snd_seq snd_hda_core snd_hwdep intel_cstate input_leds intel_rapl_perf
[  698.739174]  snd_pcm snd_seq_device mei_me snd_timer mei ie31200_edac snd soundcore wmi mac_hid acpi_pad nvidia_uvm(POE) sch_fq_codel iptable_filter ip6table_filter ip6_tables br_netfilter bridge stp llc arp_tables parport_pc ppdev sunrpc lp parport ip_tables x_tables autofs4 btrfs xor zstd_compress raid6_pq libcrc32c algif_skcipher af_alg dm_crypt hid_generic usbhid hid uas usb_storage crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc nvidia_drm(POE) nvidia_modeset(POE) gpio_ich nvidia(POE) drm_kms_helper aesni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops aes_x86_64 crypto_simd cryptd glue_helper drm ahci e1000e ipmi_devintf libahci lpc_ich ipmi_msghandler video [last unloaded: spl]
[  698.739201] CR2: 0000000000000001
[  698.739203] ---[ end trace 392a0431d89b20ef ]---
[  698.739204] RIP: 0010:0x1
[  698.739204] Code: Bad RIP value.
[  698.739207] RSP: 0018:ffffb934c3c9b000 EFLAGS: 00010202
[  698.739208] RAX: 0000000000000001 RBX: ffff8e3cf0c602b8 RCX: 0000000000000001
[  698.739209] RDX: 0000000000000008 RSI: ffffb934c3c9b01c RDI: ffffb934c3c9b020
[  698.739210] RBP: ffffb934c3c9b058 R08: 0000000000000008 R09: 0000000000000001
[  698.739211] R10: ffff8e3e54cb6900 R11: ffff8e3dc11ef400 R12: 0000000000000000
[  698.739212] R13: ffff8e3d28210320 R14: ffff8e3d716af000 R15: 0000000000000008
[  698.739213] FS:  00007f476c0657c0(0000) GS:ffff8e3e7ecc0000(0000) knlGS:0000000000000000
[  698.739214] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  698.739215] CR2: ffffffffffffffd7 CR3: 00000007c9848004 CR4: 00000000001606e0

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[jpfingstmann]

Looks like you're right. I will close this issue.