Comment 22 for bug 1861235

Hello Colin, trying the zfs recv operation on the .3 dkms eventually kills my system dead. There was nothing on the console. The cursor on the console stopped blinking; I couldn't switch VTs. My ssh sessions were hung. ping reported destination host unreachable.

It ran for about two and a half minutes, transferred around 10 datasets or snapshots:
$ journalctl -b -1 | grep -c "COMMAND=/sbin/zfs receive"
10

Sadly, journalctl doesn't have the dmesg from the previous boot:

$ journalctl -b -1 -k
[...]
May 15 17:25:10 wopr kernel: ZFS: Loaded module v0.7.5-1ubuntu16.10~lp1861235.3, ZFS pool version 5000, ZFS filesystem version 5
May 15 17:25:15 wopr kernel: zd32: p1
May 15 17:25:20 wopr kernel: pps pps0: new PPS source ptp0
May 15 17:25:20 wopr kernel: ixgbe 0000:05:00.0: registered PHC device on enp5s0f0
May 15 17:25:20 wopr kernel: IPv6: ADDRCONF(NETDEV_UP): enp5s0f0: link is not ready
May 15 17:25:20 wopr kernel: new mount options do not match the existing superblock, will be ignored
May 15 17:25:21 wopr kernel: Process accounting resumed
May 15 17:25:24 wopr kernel: ixgbe 0000:05:00.0 enp5s0f0: NIC Link is Up 1 Gbps, Flow Control: None
May 15 17:25:24 wopr kernel: IPv6: ADDRCONF(NETDEV_CHANGE): enp5s0f0: link becomes ready
May 15 17:25:29 wopr kernel: NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
May 15 17:25:29 wopr kernel: NFSD: starting 90-second grace period (net f00000a9)
May 15 17:25:32 wopr kernel: ip6_tables: (C) 2000-2006 Netfilter Core Team
May 15 17:25:32 wopr kernel: Ebtables v2.0 registered
May 15 17:25:33 wopr kernel: bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
May 15 17:25:33 wopr kernel: virbr0: port 1(virbr0-nic) entered blocking state
May 15 17:25:33 wopr kernel: virbr0: port 1(virbr0-nic) entered disabled state
May 15 17:25:33 wopr kernel: device virbr0-nic entered promiscuous mode
May 15 17:25:33 wopr kernel: nf_conntrack version 0.5.0 (65536 buckets, 262144 max)
May 15 17:25:33 wopr kernel: virbr0: port 1(virbr0-nic) entered blocking state
May 15 17:25:33 wopr kernel: virbr0: port 1(virbr0-nic) entered listening state
May 15 17:25:33 wopr kernel: virbr0: port 1(virbr0-nic) entered disabled state

Thanks