[Kernel-packages] [Bug 1832101] Re: systemd-networkd: Lost carrier e1000

2019-06-25 Thread Shivaram Lingamneni
Is there any additional information we should collect in order to report
this to LKML?

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Title:
  systemd-networkd:   Lost carrier e1000

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Just installed a fresh installation of ubuntu 19 on our server and
  we're having a lot of carrier-lost erros.

  There is no really good indicaton why this is hapening.

  Tried the following : disabled ipv6 (just to be sure), on nic set GSO,GRO,TSO 
to off.
  removed netplan, switched to systemd-networkd and added 
configurewithoutcarrier to true, the option ignorecarrierlost is not accepted 
by systemd.

  Description:Ubuntu 19.04
  Release:19.04

  
  Kernel Log

  Jun  8 12:11:17 mc2 kernel: [30304.199050] [ cut here 
]
  Jun  8 12:11:17 mc2 kernel: [30304.199052] NETDEV WATCHDOG: eno1 (e1000e): 
transmit queue 0 timed out
  Jun  8 12:11:17 mc2 kernel: [30304.199062] WARNING: CPU: 8 PID: 0 at 
net/sched/sch_generic.c:461 dev_watchdog+0x221/0x230
  Jun  8 12:11:17 mc2 kernel: [30304.199062] Modules linked in: intel_rapl 
x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass 
crct10dif_pclmul 
  crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 crypto_simd cryptd 
glue_helper intel_cstate intel_rapl_perf intel_wmi_thunderbolt wmi_bmof 
intel_pch_thermal mac_hid acpi_pad ip6t_REJE
  CT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt ipt_REJECT nf_reject_ipv4 
nf_log_ipv4 nf_log_common xt_LOG xt_multiport xt_limit xt_tcpudp xt_addrtype 
sch_fq_codel xt_conntrack ip6
  table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast 
nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 
iptable_filter bpfilter ip_
  tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov 
async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid0 multipath 
linear raid1 e1000e
   nvme ahci i2c_i801 libahci nvme_core wmi video pinctrl_cannonlake 
pinctrl_intel
  Jun  8 12:11:17 mc2 kernel: [30304.199080] CPU: 8 PID: 0 Comm: swapper/8 Not 
tainted 5.0.0-16-generic #17-Ubuntu
  Jun  8 12:11:17 mc2 kernel: [30304.199081] Hardware name: Gigabyte Technology 
Co., Ltd. B360 HD3P-LM/B360HD3PLM-CF, BIOS F4 HZ 04/30/2019
  Jun  8 12:11:17 mc2 kernel: [30304.199082] RIP: 0010:dev_watchdog+0x221/0x230
  Jun  8 12:11:17 mc2 kernel: [30304.199083] Code: 00 49 63 4e e0 eb 92 4c 89 
ef c6 05 9a 92 f0 00 01 e8 13 38 fc ff 89 d9 4c 89 ee 48 c7 c7 68 5e da 95 48 
89 c2 e8 71 f1 79 ff
   <0f> 0b eb c0 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48
  Jun  8 12:11:17 mc2 kernel: [30304.199083] RSP: 0018:93adff203e68 EFLAGS: 
00010286
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RAX:  RBX: 
 RCX: 0006
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RDX: 0007 RSI: 
0096 RDI: 93adff216440
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RBP: 93adff203e98 R08: 
0001 R09: 0c61
  Jun  8 12:11:17 mc2 kernel: [30304.199085] R10: 0004 R11: 
 R12: 0001
  Jun  8 12:11:17 mc2 kernel: [30304.199085] R13: 93adec48 R14: 
93adec4804c0 R15: 93adeca74080
  Jun  8 12:11:17 mc2 kernel: [30304.199086] FS:  () 
GS:93adff20() knlGS:
  Jun  8 12:11:17 mc2 kernel: [30304.199086] CS:  0010 DS:  ES:  CR0: 
80050033
  Jun  8 12:11:17 mc2 kernel: [30304.199086] CR2: 7f7783ea4300 CR3: 
00043920e003 CR4: 003606e0
  Jun  8 12:11:17 mc2 kernel: [30304.199087] DR0:  DR1: 
 DR2: 
  Jun  8 12:11:17 mc2 kernel: [30304.199087] DR3:  DR6: 
fffe0ff0 DR7: 0400
  Jun  8 12:11:17 mc2 kernel: [30304.199087] Call Trace:
  Jun  8 12:11:17 mc2 kernel: [30304.199088]  
  Jun  8 12:11:17 mc2 kernel: [30304.199090]  ? pfifo_fast_enqueue+0x120/0x120
  Jun  8 12:11:17 mc2 kernel: [30304.199091]  call_timer_fn+0x30/0x130
  Jun  8 12:11:17 mc2 kernel: [30304.199092]  run_timer_softirq+0x3e4/0x420
  Jun  8 12:11:17 mc2 kernel: [30304.199093]  ? ktime_get+0x3c/0xa0
  Jun  8 12:11:17 mc2 kernel: [30304.199095]  ? lapic_next_deadline+0x26/0x30
  Jun  8 12:11:17 mc2 kernel: [30304.199096]  ? 
clockevents_program_event+0x93/0xf0
  Jun  8 12:11:17 mc2 kernel: [30304.199097]  __do_softirq+0xdc/0x2f3
  Jun  8 12:11:17 mc2 kernel: [30304.199099]  irq_exit+0xc0/0xd0
  Jun  8 12:11:17 mc2 kernel: [30304.199099]  
smp_apic_timer_interrupt+0x79/0x140
  Jun  8 12:11:17 mc2 kernel: [30304.199100]  apic_timer_interrupt+0xf/0x20
  Jun  8 12:11:17 mc2 kernel: [30304.199101]  
  Jun  8 12:11:17 mc2 kernel: [30304.199102] RIP: 
0010:cpuidle_enter_state+0xbd/0x450
  Jun  8 12:11:17 mc2 kernel: [30304.199103] Code: ff e8 87 36 

[Kernel-packages] [Bug 1832101] Re: systemd-networkd: Lost carrier e1000

2019-06-19 Thread Shivaram Lingamneni
It's challenging for me to test mainline kernels because it means losing
access to ZFS, but I can probably do this later this week.

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https://bugs.launchpad.net/bugs/1832101

Title:
  systemd-networkd:   Lost carrier e1000

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Just installed a fresh installation of ubuntu 19 on our server and
  we're having a lot of carrier-lost erros.

  There is no really good indicaton why this is hapening.

  Tried the following : disabled ipv6 (just to be sure), on nic set GSO,GRO,TSO 
to off.
  removed netplan, switched to systemd-networkd and added 
configurewithoutcarrier to true, the option ignorecarrierlost is not accepted 
by systemd.

  Description:Ubuntu 19.04
  Release:19.04

  
  Kernel Log

  Jun  8 12:11:17 mc2 kernel: [30304.199050] [ cut here 
]
  Jun  8 12:11:17 mc2 kernel: [30304.199052] NETDEV WATCHDOG: eno1 (e1000e): 
transmit queue 0 timed out
  Jun  8 12:11:17 mc2 kernel: [30304.199062] WARNING: CPU: 8 PID: 0 at 
net/sched/sch_generic.c:461 dev_watchdog+0x221/0x230
  Jun  8 12:11:17 mc2 kernel: [30304.199062] Modules linked in: intel_rapl 
x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass 
crct10dif_pclmul 
  crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 crypto_simd cryptd 
glue_helper intel_cstate intel_rapl_perf intel_wmi_thunderbolt wmi_bmof 
intel_pch_thermal mac_hid acpi_pad ip6t_REJE
  CT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt ipt_REJECT nf_reject_ipv4 
nf_log_ipv4 nf_log_common xt_LOG xt_multiport xt_limit xt_tcpudp xt_addrtype 
sch_fq_codel xt_conntrack ip6
  table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast 
nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 
iptable_filter bpfilter ip_
  tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov 
async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid0 multipath 
linear raid1 e1000e
   nvme ahci i2c_i801 libahci nvme_core wmi video pinctrl_cannonlake 
pinctrl_intel
  Jun  8 12:11:17 mc2 kernel: [30304.199080] CPU: 8 PID: 0 Comm: swapper/8 Not 
tainted 5.0.0-16-generic #17-Ubuntu
  Jun  8 12:11:17 mc2 kernel: [30304.199081] Hardware name: Gigabyte Technology 
Co., Ltd. B360 HD3P-LM/B360HD3PLM-CF, BIOS F4 HZ 04/30/2019
  Jun  8 12:11:17 mc2 kernel: [30304.199082] RIP: 0010:dev_watchdog+0x221/0x230
  Jun  8 12:11:17 mc2 kernel: [30304.199083] Code: 00 49 63 4e e0 eb 92 4c 89 
ef c6 05 9a 92 f0 00 01 e8 13 38 fc ff 89 d9 4c 89 ee 48 c7 c7 68 5e da 95 48 
89 c2 e8 71 f1 79 ff
   <0f> 0b eb c0 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48
  Jun  8 12:11:17 mc2 kernel: [30304.199083] RSP: 0018:93adff203e68 EFLAGS: 
00010286
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RAX:  RBX: 
 RCX: 0006
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RDX: 0007 RSI: 
0096 RDI: 93adff216440
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RBP: 93adff203e98 R08: 
0001 R09: 0c61
  Jun  8 12:11:17 mc2 kernel: [30304.199085] R10: 0004 R11: 
 R12: 0001
  Jun  8 12:11:17 mc2 kernel: [30304.199085] R13: 93adec48 R14: 
93adec4804c0 R15: 93adeca74080
  Jun  8 12:11:17 mc2 kernel: [30304.199086] FS:  () 
GS:93adff20() knlGS:
  Jun  8 12:11:17 mc2 kernel: [30304.199086] CS:  0010 DS:  ES:  CR0: 
80050033
  Jun  8 12:11:17 mc2 kernel: [30304.199086] CR2: 7f7783ea4300 CR3: 
00043920e003 CR4: 003606e0
  Jun  8 12:11:17 mc2 kernel: [30304.199087] DR0:  DR1: 
 DR2: 
  Jun  8 12:11:17 mc2 kernel: [30304.199087] DR3:  DR6: 
fffe0ff0 DR7: 0400
  Jun  8 12:11:17 mc2 kernel: [30304.199087] Call Trace:
  Jun  8 12:11:17 mc2 kernel: [30304.199088]  
  Jun  8 12:11:17 mc2 kernel: [30304.199090]  ? pfifo_fast_enqueue+0x120/0x120
  Jun  8 12:11:17 mc2 kernel: [30304.199091]  call_timer_fn+0x30/0x130
  Jun  8 12:11:17 mc2 kernel: [30304.199092]  run_timer_softirq+0x3e4/0x420
  Jun  8 12:11:17 mc2 kernel: [30304.199093]  ? ktime_get+0x3c/0xa0
  Jun  8 12:11:17 mc2 kernel: [30304.199095]  ? lapic_next_deadline+0x26/0x30
  Jun  8 12:11:17 mc2 kernel: [30304.199096]  ? 
clockevents_program_event+0x93/0xf0
  Jun  8 12:11:17 mc2 kernel: [30304.199097]  __do_softirq+0xdc/0x2f3
  Jun  8 12:11:17 mc2 kernel: [30304.199099]  irq_exit+0xc0/0xd0
  Jun  8 12:11:17 mc2 kernel: [30304.199099]  
smp_apic_timer_interrupt+0x79/0x140
  Jun  8 12:11:17 mc2 kernel: [30304.199100]  apic_timer_interrupt+0xf/0x20
  Jun  8 12:11:17 mc2 kernel: [30304.199101]  
  Jun  8 12:11:17 mc2 kernel: [30304.199102] RIP: 
0010:cpuidle_enter_state+0xbd/0x450
  Jun  8 12:11:17 

[Kernel-packages] [Bug 1832101] Re: systemd-networkd: Lost carrier e1000

2019-06-16 Thread Shivaram Lingamneni
ethtool reports "highdma: on [fixed]", and won't let me switch it off.

-- 
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/1832101

Title:
  systemd-networkd:   Lost carrier e1000

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Just installed a fresh installation of ubuntu 19 on our server and
  we're having a lot of carrier-lost erros.

  There is no really good indicaton why this is hapening.

  Tried the following : disabled ipv6 (just to be sure), on nic set GSO,GRO,TSO 
to off.
  removed netplan, switched to systemd-networkd and added 
configurewithoutcarrier to true, the option ignorecarrierlost is not accepted 
by systemd.

  Description:Ubuntu 19.04
  Release:19.04

  
  Kernel Log

  Jun  8 12:11:17 mc2 kernel: [30304.199050] [ cut here 
]
  Jun  8 12:11:17 mc2 kernel: [30304.199052] NETDEV WATCHDOG: eno1 (e1000e): 
transmit queue 0 timed out
  Jun  8 12:11:17 mc2 kernel: [30304.199062] WARNING: CPU: 8 PID: 0 at 
net/sched/sch_generic.c:461 dev_watchdog+0x221/0x230
  Jun  8 12:11:17 mc2 kernel: [30304.199062] Modules linked in: intel_rapl 
x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass 
crct10dif_pclmul 
  crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 crypto_simd cryptd 
glue_helper intel_cstate intel_rapl_perf intel_wmi_thunderbolt wmi_bmof 
intel_pch_thermal mac_hid acpi_pad ip6t_REJE
  CT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt ipt_REJECT nf_reject_ipv4 
nf_log_ipv4 nf_log_common xt_LOG xt_multiport xt_limit xt_tcpudp xt_addrtype 
sch_fq_codel xt_conntrack ip6
  table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast 
nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 
iptable_filter bpfilter ip_
  tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov 
async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid0 multipath 
linear raid1 e1000e
   nvme ahci i2c_i801 libahci nvme_core wmi video pinctrl_cannonlake 
pinctrl_intel
  Jun  8 12:11:17 mc2 kernel: [30304.199080] CPU: 8 PID: 0 Comm: swapper/8 Not 
tainted 5.0.0-16-generic #17-Ubuntu
  Jun  8 12:11:17 mc2 kernel: [30304.199081] Hardware name: Gigabyte Technology 
Co., Ltd. B360 HD3P-LM/B360HD3PLM-CF, BIOS F4 HZ 04/30/2019
  Jun  8 12:11:17 mc2 kernel: [30304.199082] RIP: 0010:dev_watchdog+0x221/0x230
  Jun  8 12:11:17 mc2 kernel: [30304.199083] Code: 00 49 63 4e e0 eb 92 4c 89 
ef c6 05 9a 92 f0 00 01 e8 13 38 fc ff 89 d9 4c 89 ee 48 c7 c7 68 5e da 95 48 
89 c2 e8 71 f1 79 ff
   <0f> 0b eb c0 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48
  Jun  8 12:11:17 mc2 kernel: [30304.199083] RSP: 0018:93adff203e68 EFLAGS: 
00010286
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RAX:  RBX: 
 RCX: 0006
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RDX: 0007 RSI: 
0096 RDI: 93adff216440
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RBP: 93adff203e98 R08: 
0001 R09: 0c61
  Jun  8 12:11:17 mc2 kernel: [30304.199085] R10: 0004 R11: 
 R12: 0001
  Jun  8 12:11:17 mc2 kernel: [30304.199085] R13: 93adec48 R14: 
93adec4804c0 R15: 93adeca74080
  Jun  8 12:11:17 mc2 kernel: [30304.199086] FS:  () 
GS:93adff20() knlGS:
  Jun  8 12:11:17 mc2 kernel: [30304.199086] CS:  0010 DS:  ES:  CR0: 
80050033
  Jun  8 12:11:17 mc2 kernel: [30304.199086] CR2: 7f7783ea4300 CR3: 
00043920e003 CR4: 003606e0
  Jun  8 12:11:17 mc2 kernel: [30304.199087] DR0:  DR1: 
 DR2: 
  Jun  8 12:11:17 mc2 kernel: [30304.199087] DR3:  DR6: 
fffe0ff0 DR7: 0400
  Jun  8 12:11:17 mc2 kernel: [30304.199087] Call Trace:
  Jun  8 12:11:17 mc2 kernel: [30304.199088]  
  Jun  8 12:11:17 mc2 kernel: [30304.199090]  ? pfifo_fast_enqueue+0x120/0x120
  Jun  8 12:11:17 mc2 kernel: [30304.199091]  call_timer_fn+0x30/0x130
  Jun  8 12:11:17 mc2 kernel: [30304.199092]  run_timer_softirq+0x3e4/0x420
  Jun  8 12:11:17 mc2 kernel: [30304.199093]  ? ktime_get+0x3c/0xa0
  Jun  8 12:11:17 mc2 kernel: [30304.199095]  ? lapic_next_deadline+0x26/0x30
  Jun  8 12:11:17 mc2 kernel: [30304.199096]  ? 
clockevents_program_event+0x93/0xf0
  Jun  8 12:11:17 mc2 kernel: [30304.199097]  __do_softirq+0xdc/0x2f3
  Jun  8 12:11:17 mc2 kernel: [30304.199099]  irq_exit+0xc0/0xd0
  Jun  8 12:11:17 mc2 kernel: [30304.199099]  
smp_apic_timer_interrupt+0x79/0x140
  Jun  8 12:11:17 mc2 kernel: [30304.199100]  apic_timer_interrupt+0xf/0x20
  Jun  8 12:11:17 mc2 kernel: [30304.199101]  
  Jun  8 12:11:17 mc2 kernel: [30304.199102] RIP: 
0010:cpuidle_enter_state+0xbd/0x450
  Jun  8 12:11:17 mc2 kernel: [30304.199103] Code: ff e8 87 36 87 ff 80 7d c7 

[Kernel-packages] [Bug 1832101] Re: systemd-networkd: Lost carrier e1000

2019-06-14 Thread Shivaram Lingamneni
I'm having this issue as well, with the 5.0.0-16-generic kernel on amd64
and an Intel I219-V NIC using the e1000e driver. I have a test case that
can reproduce it somewhat reliably (involving a lot of concurrent back-
and-forth chatter on my LAN).

I was able to reproduce it even after this command:

ethtool -K enp0s31f6 gso off gro off tso off rx off tx off

although anecdotally, disabling those features makes reproduction
harder.

After the original oops with backtrace (similar to the one posted
above), the problem presents simply as:

Jun 14 03:54:43 good-fortune systemd-networkd[7815]: enp0s31f6: Lost carrier
Jun 14 03:54:43 good-fortune systemd-networkd[7815]: enp0s31f6: DHCP lease lost

with no further backtraces.

-- 
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/1832101

Title:
  systemd-networkd:   Lost carrier e1000

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Just installed a fresh installation of ubuntu 19 on our server and
  we're having a lot of carrier-lost erros.

  There is no really good indicaton why this is hapening.

  Tried the following : disabled ipv6 (just to be sure), on nic set GSO,GRO,TSO 
to off.
  removed netplan, switched to systemd-networkd and added 
configurewithoutcarrier to true, the option ignorecarrierlost is not accepted 
by systemd.

  Description:Ubuntu 19.04
  Release:19.04

  
  Kernel Log

  Jun  8 12:11:17 mc2 kernel: [30304.199050] [ cut here 
]
  Jun  8 12:11:17 mc2 kernel: [30304.199052] NETDEV WATCHDOG: eno1 (e1000e): 
transmit queue 0 timed out
  Jun  8 12:11:17 mc2 kernel: [30304.199062] WARNING: CPU: 8 PID: 0 at 
net/sched/sch_generic.c:461 dev_watchdog+0x221/0x230
  Jun  8 12:11:17 mc2 kernel: [30304.199062] Modules linked in: intel_rapl 
x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass 
crct10dif_pclmul 
  crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 crypto_simd cryptd 
glue_helper intel_cstate intel_rapl_perf intel_wmi_thunderbolt wmi_bmof 
intel_pch_thermal mac_hid acpi_pad ip6t_REJE
  CT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt ipt_REJECT nf_reject_ipv4 
nf_log_ipv4 nf_log_common xt_LOG xt_multiport xt_limit xt_tcpudp xt_addrtype 
sch_fq_codel xt_conntrack ip6
  table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast 
nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 
iptable_filter bpfilter ip_
  tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov 
async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid0 multipath 
linear raid1 e1000e
   nvme ahci i2c_i801 libahci nvme_core wmi video pinctrl_cannonlake 
pinctrl_intel
  Jun  8 12:11:17 mc2 kernel: [30304.199080] CPU: 8 PID: 0 Comm: swapper/8 Not 
tainted 5.0.0-16-generic #17-Ubuntu
  Jun  8 12:11:17 mc2 kernel: [30304.199081] Hardware name: Gigabyte Technology 
Co., Ltd. B360 HD3P-LM/B360HD3PLM-CF, BIOS F4 HZ 04/30/2019
  Jun  8 12:11:17 mc2 kernel: [30304.199082] RIP: 0010:dev_watchdog+0x221/0x230
  Jun  8 12:11:17 mc2 kernel: [30304.199083] Code: 00 49 63 4e e0 eb 92 4c 89 
ef c6 05 9a 92 f0 00 01 e8 13 38 fc ff 89 d9 4c 89 ee 48 c7 c7 68 5e da 95 48 
89 c2 e8 71 f1 79 ff
   <0f> 0b eb c0 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48
  Jun  8 12:11:17 mc2 kernel: [30304.199083] RSP: 0018:93adff203e68 EFLAGS: 
00010286
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RAX:  RBX: 
 RCX: 0006
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RDX: 0007 RSI: 
0096 RDI: 93adff216440
  Jun  8 12:11:17 mc2 kernel: [30304.199084] RBP: 93adff203e98 R08: 
0001 R09: 0c61
  Jun  8 12:11:17 mc2 kernel: [30304.199085] R10: 0004 R11: 
 R12: 0001
  Jun  8 12:11:17 mc2 kernel: [30304.199085] R13: 93adec48 R14: 
93adec4804c0 R15: 93adeca74080
  Jun  8 12:11:17 mc2 kernel: [30304.199086] FS:  () 
GS:93adff20() knlGS:
  Jun  8 12:11:17 mc2 kernel: [30304.199086] CS:  0010 DS:  ES:  CR0: 
80050033
  Jun  8 12:11:17 mc2 kernel: [30304.199086] CR2: 7f7783ea4300 CR3: 
00043920e003 CR4: 003606e0
  Jun  8 12:11:17 mc2 kernel: [30304.199087] DR0:  DR1: 
 DR2: 
  Jun  8 12:11:17 mc2 kernel: [30304.199087] DR3:  DR6: 
fffe0ff0 DR7: 0400
  Jun  8 12:11:17 mc2 kernel: [30304.199087] Call Trace:
  Jun  8 12:11:17 mc2 kernel: [30304.199088]  
  Jun  8 12:11:17 mc2 kernel: [30304.199090]  ? pfifo_fast_enqueue+0x120/0x120
  Jun  8 12:11:17 mc2 kernel: [30304.199091]  call_timer_fn+0x30/0x130
  Jun  8 12:11:17 mc2 kernel: [30304.199092]  run_timer_softirq+0x3e4/0x420
  Jun  8 12:11:17 mc2 kernel: [30304.199093]  ? ktime_get+0x3c/0xa0
  Jun  8 

[Kernel-packages] [Bug 1815508] Re: Xorg freezes due to kernel hung task in the i915 driver

2019-02-20 Thread Shivaram Lingamneni
I use ZFS. I looked here:

https://kernel.ubuntu.com/~kernel-ppa/mainline/v4.20.11/

and it looks like linux-
modules-4.20.11-042011-generic_4.20.11-042011.201902200535_amd64.deb
does not provide a zfs.ko. Given that the bug may take days to
reproduce, is there a way I can perform this testing without losing
access to my ZFS filesystem?

Thanks for your time.

-- 
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/1815508

Title:
  Xorg freezes due to kernel hung task in the i915 driver

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This bug is present in 18.04 and is triggered by specific actions, in
  particular, paging through image galleries in Eye of Gnome. When the
  bug is triggered, Xorg freezes completely and goes into the D
  (uninterruptible sleep) state. The machine continues to respond to
  ping and ssh. When triggering a shutdown or reboot over ssh, the
  shutdown process continues normally until most userspace processes
  (including systemd-journald) have been stopped, but then hangs. The
  system can still be rebooted with the magic sysrq technique.

  Here's some dmesg output:

  [0.00] Linux version 4.15.0-45-generic (buildd@lgw01-amd64-031) (gcc 
version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 
2019 (Ubuntu 4.15.0-45.48-generic 4.15.18)
  [0.00] Command line: BOOT_IMAGE=/vmlinuz-4.15.0-45-generic 
root=/dev/mapper/good--fortune--vg-root ro intel_iommu=igfx_off

  ###
  # This error happens regularly and may be irrelevant:
  ###

  [  345.680936] [ cut here ]
  [  345.680938] Failed to release pages: bind_count=1, pages_pin_count=1, 
pin_global=0
  [  345.680998] WARNING: CPU: 1 PID: 241 at 
/build/linux-uQJ2um/linux-4.15.0/drivers/gpu/drm/i915/i915_gem_userptr.c:89 
cancel_userptr+0xe8/0xf0 [i915]
  [  345.680999] Modules linked in: zfs(PO) zunicode(PO) zavl(PO) icp(PO) 
zcommon(PO) znvpair(PO) spl(O) nls_iso8859_1 xt_hl ip6t_rt intel_rapl 
x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass intel_cstate 
intel_rapl_perf eeepc_wmi asus_wmi sparse_keymap wmi_bmof nf_conntrack_ipv6 
snd_hda_codec_hdmi nf_defrag_ipv6 snd_hda_codec_realtek snd_hda_codec_generic 
xt_limit uvcvideo xt_tcpudp xt_addrtype videobuf2_vmalloc snd_hda_intel 
snd_hda_codec videobuf2_memops videobuf2_v4l2 snd_hda_core snd_usb_audio 
videobuf2_core snd_usbmidi_lib joydev snd_hwdep videodev snd_rawmidi shpchp 
snd_seq_device media snd_pcm snd_timer input_leds usblp snd soundcore mei_me 
mei acpi_pad mac_hid sch_fq_codel nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack 
ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi
  [  345.681028]  scsi_transport_iscsi coretemp ip6table_filter ip6_tables 
nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat 
nf_conntrack_ftp nf_conntrack parport_pc ppdev lp parport iptable_filter 
ip_tables x_tables autofs4 btrfs zstd_compress algif_skcipher af_alg dm_crypt 
hid_microsoft raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor 
async_tx xor hid_generic usbhid hid raid6_pq libcrc32c raid1 raid0 multipath 
linear i915 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc i2c_algo_bit 
drm_kms_helper syscopyarea sysfillrect aesni_intel mxm_wmi sysimgblt 
fb_sys_fops e1000e aes_x86_64 crypto_simd ptp glue_helper nvme cryptd drm 
pps_core ahci nvme_core libahci wmi video
  [  345.681059] CPU: 1 PID: 241 Comm: kworker/u8:5 Tainted: P   O 
4.15.0-45-generic #48-Ubuntu
  [  345.681059] Hardware name: System manufacturer System Product Name/PRIME 
B250M-C, BIOS 1402 11/16/2018
  [  345.681081] Workqueue: i915-userptr-release cancel_userptr [i915]
  [  345.681096] RIP: 0010:cancel_userptr+0xe8/0xf0 [i915]
  [  345.681097] RSP: 0018:afc441edbe60 EFLAGS: 00010282
  [  345.681098] RAX:  RBX: 8fb681b17600 RCX: 
0006
  [  345.681099] RDX: 0007 RSI: 0082 RDI: 
8fb6b6c96490
  [  345.681100] RBP: afc441edbe78 R08: 0001 R09: 
03c4
  [  345.681101] R10: e28d5018ef80 R11:  R12: 
8fb681b177a8
  [  345.681101] R13:  R14: 8fb698eba500 R15: 

  [  345.681102] FS:  () GS:8fb6b6c8() 
knlGS:
  [  345.681103] CS:  0010 DS:  ES:  CR0: 80050033
  [  345.681104] CR2: 7f18205d3857 CR3: 22e0a002 CR4: 
003606e0
  [  345.681105] Call Trace:
  [  345.681110]  process_one_work+0x1de/0x410
  [  345.68]  worker_thread+0x32/0x410
  [  345.681113]  kthread+0x121/0x140
  [  345.681115]  ? process_one_work+0x410/0x410
  [  345.681116]  ? kthread_create_worker_on_cpu+0x70/0x70
  [  345.681119]  ret_from_fork+0x35/0x40
  [  345.681120] Code: bf 46 ff ff eb c9 8b 93 c8 01 00 00 8b 8b a4 01 00 00 48 
c7 c7 40 44 7a c0 8b b3 9c 01 00 00 c6 05 b5 

[Kernel-packages] [Bug 1815508] Re: Xorg freezes due to kernel hung task in the i915 driver

2019-02-11 Thread Shivaram Lingamneni
Following advice I saw on Stackexchange, I've been setting
`intel_iommu=igfx_off` on the kernel command line; this seems to
mitigate, but the bug still occurs.

I've submitted a redacted version of the apport-collect output, which I
hope is enough. I will tentatively mark the bug confirmed.

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

-- 
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/1815508

Title:
  Xorg freezes due to kernel hung task in the i915 driver

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  This bug is present in 18.04 and is triggered by specific actions, in
  particular, paging through image galleries in Eye of Gnome. When the
  bug is triggered, Xorg freezes completely and goes into the D
  (uninterruptible sleep) state. The machine continues to respond to
  ping and ssh. When triggering a shutdown or reboot over ssh, the
  shutdown process continues normally until most userspace processes
  (including systemd-journald) have been stopped, but then hangs. The
  system can still be rebooted with the magic sysrq technique.

  Here's some dmesg output:

  [0.00] Linux version 4.15.0-45-generic (buildd@lgw01-amd64-031) (gcc 
version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 
2019 (Ubuntu 4.15.0-45.48-generic 4.15.18)
  [0.00] Command line: BOOT_IMAGE=/vmlinuz-4.15.0-45-generic 
root=/dev/mapper/good--fortune--vg-root ro intel_iommu=igfx_off

  ###
  # This error happens regularly and may be irrelevant:
  ###

  [  345.680936] [ cut here ]
  [  345.680938] Failed to release pages: bind_count=1, pages_pin_count=1, 
pin_global=0
  [  345.680998] WARNING: CPU: 1 PID: 241 at 
/build/linux-uQJ2um/linux-4.15.0/drivers/gpu/drm/i915/i915_gem_userptr.c:89 
cancel_userptr+0xe8/0xf0 [i915]
  [  345.680999] Modules linked in: zfs(PO) zunicode(PO) zavl(PO) icp(PO) 
zcommon(PO) znvpair(PO) spl(O) nls_iso8859_1 xt_hl ip6t_rt intel_rapl 
x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass intel_cstate 
intel_rapl_perf eeepc_wmi asus_wmi sparse_keymap wmi_bmof nf_conntrack_ipv6 
snd_hda_codec_hdmi nf_defrag_ipv6 snd_hda_codec_realtek snd_hda_codec_generic 
xt_limit uvcvideo xt_tcpudp xt_addrtype videobuf2_vmalloc snd_hda_intel 
snd_hda_codec videobuf2_memops videobuf2_v4l2 snd_hda_core snd_usb_audio 
videobuf2_core snd_usbmidi_lib joydev snd_hwdep videodev snd_rawmidi shpchp 
snd_seq_device media snd_pcm snd_timer input_leds usblp snd soundcore mei_me 
mei acpi_pad mac_hid sch_fq_codel nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack 
ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi
  [  345.681028]  scsi_transport_iscsi coretemp ip6table_filter ip6_tables 
nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat 
nf_conntrack_ftp nf_conntrack parport_pc ppdev lp parport iptable_filter 
ip_tables x_tables autofs4 btrfs zstd_compress algif_skcipher af_alg dm_crypt 
hid_microsoft raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor 
async_tx xor hid_generic usbhid hid raid6_pq libcrc32c raid1 raid0 multipath 
linear i915 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc i2c_algo_bit 
drm_kms_helper syscopyarea sysfillrect aesni_intel mxm_wmi sysimgblt 
fb_sys_fops e1000e aes_x86_64 crypto_simd ptp glue_helper nvme cryptd drm 
pps_core ahci nvme_core libahci wmi video
  [  345.681059] CPU: 1 PID: 241 Comm: kworker/u8:5 Tainted: P   O 
4.15.0-45-generic #48-Ubuntu
  [  345.681059] Hardware name: System manufacturer System Product Name/PRIME 
B250M-C, BIOS 1402 11/16/2018
  [  345.681081] Workqueue: i915-userptr-release cancel_userptr [i915]
  [  345.681096] RIP: 0010:cancel_userptr+0xe8/0xf0 [i915]
  [  345.681097] RSP: 0018:afc441edbe60 EFLAGS: 00010282
  [  345.681098] RAX:  RBX: 8fb681b17600 RCX: 
0006
  [  345.681099] RDX: 0007 RSI: 0082 RDI: 
8fb6b6c96490
  [  345.681100] RBP: afc441edbe78 R08: 0001 R09: 
03c4
  [  345.681101] R10: e28d5018ef80 R11:  R12: 
8fb681b177a8
  [  345.681101] R13:  R14: 8fb698eba500 R15: 

  [  345.681102] FS:  () GS:8fb6b6c8() 
knlGS:
  [  345.681103] CS:  0010 DS:  ES:  CR0: 80050033
  [  345.681104] CR2: 7f18205d3857 CR3: 22e0a002 CR4: 
003606e0
  [  345.681105] Call Trace:
  [  345.681110]  process_one_work+0x1de/0x410
  [  345.68]  worker_thread+0x32/0x410
  [  345.681113]  kthread+0x121/0x140
  [  345.681115]  ? process_one_work+0x410/0x410
  [  345.681116]  ? kthread_create_worker_on_cpu+0x70/0x70
  [  345.681119]  ret_from_fork+0x35/0x40
  [  345.681120] Code: bf 46 ff ff eb c9 8b 93 c8 01 00 00 8b 8b a4 01 00 00 48 
c7 c7 40 44 7a c0 8b b3 9c 01 00 00 c6 05 b5 

[Kernel-packages] [Bug 1815508] Re: Xorg freezes due to kernel hung task in the i915 driver

2019-02-11 Thread Shivaram Lingamneni
redacted copy of apport-collect output

** Attachment added: "apport.redacted.txt"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1815508/+attachment/5237750/+files/apport.redacted.txt

-- 
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/1815508

Title:
  Xorg freezes due to kernel hung task in the i915 driver

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  This bug is present in 18.04 and is triggered by specific actions, in
  particular, paging through image galleries in Eye of Gnome. When the
  bug is triggered, Xorg freezes completely and goes into the D
  (uninterruptible sleep) state. The machine continues to respond to
  ping and ssh. When triggering a shutdown or reboot over ssh, the
  shutdown process continues normally until most userspace processes
  (including systemd-journald) have been stopped, but then hangs. The
  system can still be rebooted with the magic sysrq technique.

  Here's some dmesg output:

  [0.00] Linux version 4.15.0-45-generic (buildd@lgw01-amd64-031) (gcc 
version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 
2019 (Ubuntu 4.15.0-45.48-generic 4.15.18)
  [0.00] Command line: BOOT_IMAGE=/vmlinuz-4.15.0-45-generic 
root=/dev/mapper/good--fortune--vg-root ro intel_iommu=igfx_off

  ###
  # This error happens regularly and may be irrelevant:
  ###

  [  345.680936] [ cut here ]
  [  345.680938] Failed to release pages: bind_count=1, pages_pin_count=1, 
pin_global=0
  [  345.680998] WARNING: CPU: 1 PID: 241 at 
/build/linux-uQJ2um/linux-4.15.0/drivers/gpu/drm/i915/i915_gem_userptr.c:89 
cancel_userptr+0xe8/0xf0 [i915]
  [  345.680999] Modules linked in: zfs(PO) zunicode(PO) zavl(PO) icp(PO) 
zcommon(PO) znvpair(PO) spl(O) nls_iso8859_1 xt_hl ip6t_rt intel_rapl 
x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass intel_cstate 
intel_rapl_perf eeepc_wmi asus_wmi sparse_keymap wmi_bmof nf_conntrack_ipv6 
snd_hda_codec_hdmi nf_defrag_ipv6 snd_hda_codec_realtek snd_hda_codec_generic 
xt_limit uvcvideo xt_tcpudp xt_addrtype videobuf2_vmalloc snd_hda_intel 
snd_hda_codec videobuf2_memops videobuf2_v4l2 snd_hda_core snd_usb_audio 
videobuf2_core snd_usbmidi_lib joydev snd_hwdep videodev snd_rawmidi shpchp 
snd_seq_device media snd_pcm snd_timer input_leds usblp snd soundcore mei_me 
mei acpi_pad mac_hid sch_fq_codel nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack 
ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi
  [  345.681028]  scsi_transport_iscsi coretemp ip6table_filter ip6_tables 
nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat 
nf_conntrack_ftp nf_conntrack parport_pc ppdev lp parport iptable_filter 
ip_tables x_tables autofs4 btrfs zstd_compress algif_skcipher af_alg dm_crypt 
hid_microsoft raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor 
async_tx xor hid_generic usbhid hid raid6_pq libcrc32c raid1 raid0 multipath 
linear i915 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc i2c_algo_bit 
drm_kms_helper syscopyarea sysfillrect aesni_intel mxm_wmi sysimgblt 
fb_sys_fops e1000e aes_x86_64 crypto_simd ptp glue_helper nvme cryptd drm 
pps_core ahci nvme_core libahci wmi video
  [  345.681059] CPU: 1 PID: 241 Comm: kworker/u8:5 Tainted: P   O 
4.15.0-45-generic #48-Ubuntu
  [  345.681059] Hardware name: System manufacturer System Product Name/PRIME 
B250M-C, BIOS 1402 11/16/2018
  [  345.681081] Workqueue: i915-userptr-release cancel_userptr [i915]
  [  345.681096] RIP: 0010:cancel_userptr+0xe8/0xf0 [i915]
  [  345.681097] RSP: 0018:afc441edbe60 EFLAGS: 00010282
  [  345.681098] RAX:  RBX: 8fb681b17600 RCX: 
0006
  [  345.681099] RDX: 0007 RSI: 0082 RDI: 
8fb6b6c96490
  [  345.681100] RBP: afc441edbe78 R08: 0001 R09: 
03c4
  [  345.681101] R10: e28d5018ef80 R11:  R12: 
8fb681b177a8
  [  345.681101] R13:  R14: 8fb698eba500 R15: 

  [  345.681102] FS:  () GS:8fb6b6c8() 
knlGS:
  [  345.681103] CS:  0010 DS:  ES:  CR0: 80050033
  [  345.681104] CR2: 7f18205d3857 CR3: 22e0a002 CR4: 
003606e0
  [  345.681105] Call Trace:
  [  345.681110]  process_one_work+0x1de/0x410
  [  345.68]  worker_thread+0x32/0x410
  [  345.681113]  kthread+0x121/0x140
  [  345.681115]  ? process_one_work+0x410/0x410
  [  345.681116]  ? kthread_create_worker_on_cpu+0x70/0x70
  [  345.681119]  ret_from_fork+0x35/0x40
  [  345.681120] Code: bf 46 ff ff eb c9 8b 93 c8 01 00 00 8b 8b a4 01 00 00 48 
c7 c7 40 44 7a c0 8b b3 9c 01 00 00 c6 05 b5 56 10 00 01 e8 e8 2a fc fa <0f> 0b 
eb bc 0f 1f 40 00 0f 1f 44 00 00 55 ba 08 00 00 00 48 89 
  [  345.681144] ---[ end trace f92d63918dad1269 ]---

  ###
  # This is 

[Kernel-packages] [Bug 1815508] [NEW] Xorg freezes due to kernel hung task in the i915 driver

2019-02-11 Thread Shivaram Lingamneni
Public bug reported:

This bug is present in 18.04 and is triggered by specific actions, in
particular, paging through image galleries in Eye of Gnome. When the bug
is triggered, Xorg freezes completely and goes into the D
(uninterruptible sleep) state. The machine continues to respond to ping
and ssh. When triggering a shutdown or reboot over ssh, the shutdown
process continues normally until most userspace processes (including
systemd-journald) have been stopped, but then hangs. The system can
still be rebooted with the magic sysrq technique.

Here's some dmesg output:

[0.00] Linux version 4.15.0-45-generic (buildd@lgw01-amd64-031) (gcc 
version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 
2019 (Ubuntu 4.15.0-45.48-generic 4.15.18)
[0.00] Command line: BOOT_IMAGE=/vmlinuz-4.15.0-45-generic 
root=/dev/mapper/good--fortune--vg-root ro intel_iommu=igfx_off

###
# This error happens regularly and may be irrelevant:
###

[  345.680936] [ cut here ]
[  345.680938] Failed to release pages: bind_count=1, pages_pin_count=1, 
pin_global=0
[  345.680998] WARNING: CPU: 1 PID: 241 at 
/build/linux-uQJ2um/linux-4.15.0/drivers/gpu/drm/i915/i915_gem_userptr.c:89 
cancel_userptr+0xe8/0xf0 [i915]
[  345.680999] Modules linked in: zfs(PO) zunicode(PO) zavl(PO) icp(PO) 
zcommon(PO) znvpair(PO) spl(O) nls_iso8859_1 xt_hl ip6t_rt intel_rapl 
x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass intel_cstate 
intel_rapl_perf eeepc_wmi asus_wmi sparse_keymap wmi_bmof nf_conntrack_ipv6 
snd_hda_codec_hdmi nf_defrag_ipv6 snd_hda_codec_realtek snd_hda_codec_generic 
xt_limit uvcvideo xt_tcpudp xt_addrtype videobuf2_vmalloc snd_hda_intel 
snd_hda_codec videobuf2_memops videobuf2_v4l2 snd_hda_core snd_usb_audio 
videobuf2_core snd_usbmidi_lib joydev snd_hwdep videodev snd_rawmidi shpchp 
snd_seq_device media snd_pcm snd_timer input_leds usblp snd soundcore mei_me 
mei acpi_pad mac_hid sch_fq_codel nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack 
ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi
[  345.681028]  scsi_transport_iscsi coretemp ip6table_filter ip6_tables 
nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat 
nf_conntrack_ftp nf_conntrack parport_pc ppdev lp parport iptable_filter 
ip_tables x_tables autofs4 btrfs zstd_compress algif_skcipher af_alg dm_crypt 
hid_microsoft raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor 
async_tx xor hid_generic usbhid hid raid6_pq libcrc32c raid1 raid0 multipath 
linear i915 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc i2c_algo_bit 
drm_kms_helper syscopyarea sysfillrect aesni_intel mxm_wmi sysimgblt 
fb_sys_fops e1000e aes_x86_64 crypto_simd ptp glue_helper nvme cryptd drm 
pps_core ahci nvme_core libahci wmi video
[  345.681059] CPU: 1 PID: 241 Comm: kworker/u8:5 Tainted: P   O 
4.15.0-45-generic #48-Ubuntu
[  345.681059] Hardware name: System manufacturer System Product Name/PRIME 
B250M-C, BIOS 1402 11/16/2018
[  345.681081] Workqueue: i915-userptr-release cancel_userptr [i915]
[  345.681096] RIP: 0010:cancel_userptr+0xe8/0xf0 [i915]
[  345.681097] RSP: 0018:afc441edbe60 EFLAGS: 00010282
[  345.681098] RAX:  RBX: 8fb681b17600 RCX: 0006
[  345.681099] RDX: 0007 RSI: 0082 RDI: 8fb6b6c96490
[  345.681100] RBP: afc441edbe78 R08: 0001 R09: 03c4
[  345.681101] R10: e28d5018ef80 R11:  R12: 8fb681b177a8
[  345.681101] R13:  R14: 8fb698eba500 R15: 
[  345.681102] FS:  () GS:8fb6b6c8() 
knlGS:
[  345.681103] CS:  0010 DS:  ES:  CR0: 80050033
[  345.681104] CR2: 7f18205d3857 CR3: 22e0a002 CR4: 003606e0
[  345.681105] Call Trace:
[  345.681110]  process_one_work+0x1de/0x410
[  345.68]  worker_thread+0x32/0x410
[  345.681113]  kthread+0x121/0x140
[  345.681115]  ? process_one_work+0x410/0x410
[  345.681116]  ? kthread_create_worker_on_cpu+0x70/0x70
[  345.681119]  ret_from_fork+0x35/0x40
[  345.681120] Code: bf 46 ff ff eb c9 8b 93 c8 01 00 00 8b 8b a4 01 00 00 48 
c7 c7 40 44 7a c0 8b b3 9c 01 00 00 c6 05 b5 56 10 00 01 e8 e8 2a fc fa <0f> 0b 
eb bc 0f 1f 40 00 0f 1f 44 00 00 55 ba 08 00 00 00 48 89 
[  345.681144] ---[ end trace f92d63918dad1269 ]---

###
# This is the hang. 2 minutes before this happened, X became completely 
unresponsive and
# went into the D (uninterruptible sleep) state. The machine still responded to 
ping and ssh.
###

[110684.322375] INFO: task Xorg:13866 blocked for more than 120 seconds.
[110684.322384]   Tainted: PW  O 4.15.0-45-generic #48-Ubuntu
[110684.322388] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
[110684.322393] XorgD0 13866  13865 0x0004
[110684.322399] Call Trace:
[110684.322411]  __schedule+0x291/0x8a0