Public bug reported:
1) Release of Ubuntu:
# lsb_release -rd
Description: Ubuntu 16.04.4 LTS
Release: 16.04
======
2) Version of the package I am using:
I suspect a kernel bug, so the version of the package would be...
# apt-cache policy linux-image-4.15.0-30-generic
linux-image-4.15.0-30-generic:
Installed: 4.15.0-30.32~16.04.1
Candidate: 4.15.0-30.32~16.04.1
Version table:
*** 4.15.0-30.32~16.04.1 500
500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64
Packages
500 http://security.ubuntu.com/ubuntu xenial-security/main amd64
Packages
100 /var/lib/dpkg/status
======
3,4) What we expected and what happened instead:
A few weeks ago we began experiencing periodic freezes of the video,
accompanied by audio that looped constantly over a short (maybe 200ms?)
audio clip, presumably of whatever was playing at the time of the
freeze. We began having this problem when we updated from the 4.13.0-41
kernel (from ~20180518) to the 4.15.0-30 kernel (20180808). It can run
for days before freezing or it can happen within a few hours.
I found this report at RedHat
(https://bugzilla.redhat.com/show_bug.cgi?id=1552124) that matches my
symptoms pretty well, and BTW I've thus far had good luck running an
older kernel (I reverted to 4.13.0-41 and it's been running for not
quite 3 days now, from Friday at ~18:00 through now (Monday, ~14:00)).
Since I've been unable to find any post-crash information in any of the
logs I checked (syslog, kern.log, etc), I enabled console logging on a
serial port in hopes of getting more info. I just now got that. Here
are those console backtraces, which I guess I don't really know how to
read.
======
[345346.898230] general protection fault: 0000 [#1] SMP PTI
[345346.961811] Modules linked in: input_leds joydev hid_generic usbhid hid
btrfs zstd_compress xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs
libcrc32c mceusb lirc_dev rc_core intel_rapl btusb intel_powerclamp coretemp
kvm_intel btrtl btbcm kvm btintel bluetooth irqbypass punit_atom_debug
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_hda_codec_hdmi
aesni_intel aes_x86_64 snd_hda_codec_realtek crypto_simd snd_hda_codec_generic
glue_helper cryptd intel_cstate ecdh_generic snd_hda_intel snd_hda_codec
snd_hda_core serio_raw snd_hwdep snd_pcm snd_timer snd mei_txe lpc_ich shpchp
mei soundcore pwm_lpss_platform pwm_lpss tpm_crb intel_int0002_vgpio mac_hid
binfmt_misc nls_iso8859_1 i915 i2c_algo_bit drm_kms_helper syscopyarea
sysfillrect sysimgblt fb_sys_fops r8169 psmouse drm ahci
[345347.807553] sdhci_pci mii libahci sdhci video
[345347.861744] CPU: 2 PID: 15656 Comm: exe Not tainted 4.15.0-30-generic
#32~16.04.1-Ubuntu
[345347.959606] Hardware name: Giada Default string/Braswell, BIOS 5.11
11/14/2017
[345348.047081] RIP: 0010:shrink_slab.part.50+0x2bc/0x440
[345348.108536] RSP: 0018:ffffb70fc13834c0 EFLAGS: 00010286
[345348.172082] RAX: ffff9def34c0d000 RBX: 0000000000000046 RCX:
0000000000000001
[345348.258508] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000000000000
[345348.344934] RBP: ffffb70fc1383580 R08: 28f5c28f5c28f5c3 R09:
000000000000000f
[345348.431359] R10: ffffb70fc13835a0 R11: 0000000000000001 R12:
000fffffbfffffd8
[345348.517786] R13: 0000000000000400 R14: 0000000000000000 R15:
0000000000005750
[345348.604212] FS: 00007f908451ca80(0000) GS:ffff9def3a500000(0000)
knlGS:0000000000000000
[345348.702077] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[345348.771863] CR2: 0000305772b54000 CR3: 0000000079afc000 CR4:
00000000001006e0
[345348.858290] Call Trace:
[345348.888560] shrink_slab+0x29/0x30
[345348.930260] shrink_node+0x108/0x310
[345348.974045] do_try_to_free_pages+0xee/0x360
[345349.026150] try_to_free_pages+0xf1/0x1c0
[345349.075135] __alloc_pages_slowpath+0x405/0xec0
[345349.130361] __alloc_pages_nodemask+0x265/0x280
[345349.185585] alloc_pages_current+0x6a/0xe0
[345349.235657] __setup_page_dma.isra.30.constprop.53+0x13a/0x1c0 [i915]
[345349.313855] alloc_pt+0x45/0x70 [i915]
[345349.359822] gen8_ppgtt_alloc_pdp+0x169/0x330 [i915]
[345349.420351] gen8_ppgtt_alloc_3lvl+0x1e/0x20 [i915]
[345349.479840] ppgtt_bind_vma+0x6a/0x80 [i915]
[345349.532055] i915_vma_bind+0x69/0xd0 [i915]
[345349.583220] __i915_vma_do_pin+0x452/0x4a0 [i915]
[345349.640631] eb_lookup_vmas+0x829/0xaf0 [i915]
[345349.694885] ? __pm_runtime_resume+0x5b/0x80
[345349.747022] i915_gem_do_execbuffer+0x49d/0x1060 [i915]
[345349.810639] ? _cond_resched+0x1a/0x50
[345349.856503] ? ___slab_alloc+0x223/0x4e0
[345349.904447] ? kvmalloc_node+0x75/0x80
[345349.950345] ? __i915_gem_object_set_pages+0xda/0x150 [i915]
[345350.019159] ? __slab_alloc+0x20/0x40
[345350.063987] ? __kmalloc_node+0x1f9/0x2c0
[345350.113007] i915_gem_execbuffer2+0x1b3/0x390 [i915]
[345350.173534] ? i915_gem_set_domain_ioctl+0x1ca/0x2b0 [i915]
[345350.241343] ? i915_gem_execbuffer+0x2c0/0x2c0 [i915]
[345350.302903] drm_ioctl_kernel+0x6b/0xb0 [drm]
[345350.356144] drm_ioctl+0x3e4/0x450 [drm]
[345350.404107] ? i915_gem_execbuffer+0x2c0/0x2c0 [i915]
[345350.465642] ? pick_next_task_fair+0x289/0x5d0
[345350.519828] ? __switch_to+0x13f/0x500
[345350.565691] ? kmem_cache_free+0x1cb/0x1e0
[345350.615719] do_vfs_ioctl+0xa4/0x600
[345350.659500] ? __schedule+0x3de/0x8b0
[345350.704326] SyS_ioctl+0x79/0x90
[345350.743952] do_syscall_64+0x73/0x130
[345350.788776] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[345350.850242] RIP: 0033:0x7f907c302f47
[345350.894023] RSP: 002b:00007ffdfb3e0418 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[345350.985650] RAX: ffffffffffffffda RBX: 00005641d5fdcc60 RCX:
00007f907c302f47
[345351.072077] RDX: 00007ffdfb3e0460 RSI: 0000000040406469 RDI:
0000000000000075
[345351.158502] RBP: 00007ffdfb3e0460 R08: 0000000000041801 R09:
000000000000000b
[345351.244928] R10: 0000000000000007 R11: 0000000000000246 R12:
0000000040406469
[345351.331353] R13: 0000000000000075 R14: 00007f9067ffc4d8 R15:
0000000000000000
[345351.417779] Code: d0 65 48 33 3c 25 28 00 00 00 48 8b 85 68 ff ff ff 0f 85
63 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 83 7d 88 00 <49> 8b
44 24 20 48 89 c2 0f 95 c1 48 d1 ea 83 e2 01 38 d1 75 97
[345351.644713] RIP: shrink_slab.part.50+0x2bc/0x440 RSP: ffffb70fc13834c0
[345351.723863] general protection fault: 0000 [#2] SMP PTI
[345351.787404] Modules linked in: input_leds joydev hid_generic usbhid hid
btrfs zstd_compress xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs
libcrc32c mceusb lirc_dev rc_core intel_rapl btusb intel_powerclamp coretemp
kvm_intel btrtl btbcm kvm btintel bluetooth irqbypass punit_atom_debug
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_hda_codec_hdmi
aesni_intel aes_x86_64 snd_hda_codec_realtek crypto_simd snd_hda_codec_generic
glue_helper cryptd intel_cstate ecdh_generic snd_hda_intel snd_hda_codec
snd_hda_core serio_raw snd_hwdep snd_pcm snd_timer snd mei_txe lpc_ich shpchp
mei soundcore pwm_lpss_platform pwm_lpss tpm_crb intel_int0002_vgpio mac_hid
binfmt_misc nls_iso8859_1 i915 i2c_algo_bit drm_kms_helper syscopyarea
sysfillrect sysimgblt fb_sys_fops r8169 psmouse drm ahci
[345352.633148] sdhci_pci mii libahci sdhci video
[345352.687335] CPU: 3 PID: 55 Comm: kswapd0 Tainted: G D
4.15.0-30-generic #32~16.04.1-Ubuntu
[345352.801840] Hardware name: Giada Default string/Braswell, BIOS 5.11
11/14/2017
[345352.889305] RIP: 0010:shrink_slab.part.50+0x2bc/0x440
[345352.950770] RSP: 0018:ffffb70fc057fcd8 EFLAGS: 00010286
[345353.014313] RAX: ffff9def34c0d000 RBX: 0000000000000046 RCX:
0000000000000001
[345353.100738] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000000000000
[345353.187165] RBP: ffffb70fc057fd98 R08: 28f5c28f5c28f5c3 R09:
000000000000000f
[345353.273590] R10: ffffb70fc057fdb8 R11: 0000000000000008 R12:
000fffffbfffffd8
[345353.360019] R13: 0000000000000400 R14: 0000000000000000 R15:
0000000000005753
[345353.446442] FS: 0000000000000000(0000) GS:ffff9def3a580000(0000)
knlGS:0000000000000000
[345353.544308] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[345353.614094] CR2: 00007f76e27ef954 CR3: 000000007a32c000 CR4:
00000000001006e0
[345353.700519] Call Trace:
[345353.730787] shrink_slab+0x29/0x30
[345353.772490] shrink_node+0x108/0x310
[345353.816275] kswapd+0x32a/0x770
[345353.854862] kthread+0x105/0x140
[345353.894485] ? mem_cgroup_shrink_node+0x190/0x190
[345353.951791] ? kthread_associate_blkcg+0xa0/0xa0
[345354.008056] ret_from_fork+0x35/0x40
[345354.051840] Code: d0 65 48 33 3c 25 28 00 00 00 48 8b 85 68 ff ff ff 0f 85
63 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 83 7d 88 00 <49> 8b
44 24 20 48 89 c2 0f 95 c1 48 d1 ea 83 e2 01 38 d1 75 97
[345354.278774] RIP: shrink_slab.part.50+0x2bc/0x440 RSP: ffffb70fc057fcd8
[345354.357921] kernel tried to execute NX-protected page - exploit attempt?
(uid: 1001)
[345354.451623] BUG: unable to handle kernel paging request at fffffb25408b0300
[345354.535971] IP: 0xfffffb25408b0300
[345354.577675] PGD 7b17d067 P4D 7b17d067 PUD 7b17c067 PMD 80000000732000e3
[345354.658899] Oops: 0011 [#3] SMP PTI
[345354.701645] Modules linked in: input_leds joydev hid_generic usbhid hid
btrfs zstd_compress xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs
libcrc32c mceusb lirc_dev rc_core intel_rapl btusb intel_powerclamp coretemp
kvm_intel btrtl btbcm kvm btintel bluetooth irqbypass punit_atom_debug
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_hda_codec_hdmi
aesni_intel aes_x86_64 snd_hda_codec_realtek crypto_simd snd_hda_codec_generic
glue_helper cryptd intel_cstate ecdh_generic snd_hda_intel snd_hda_codec
snd_hda_core serio_raw snd_hwdep snd_pcm snd_timer snd mei_txe lpc_ich shpchp
mei soundcore pwm_lpss_platform pwm_lpss tpm_crb intel_int0002_vgpio mac_hid
binfmt_misc nls_iso8859_1 i915 i2c_algo_bit drm_kms_helper syscopyarea
sysfillrect sysimgblt fb_sys_fops r8169 psmouse drm ahci
[345355.547387] sdhci_pci mii libahci sdhci video
[345355.601575] CPU: 2 PID: 15656 Comm: exe Tainted: G D
4.15.0-30-generic #32~16.04.1-Ubuntu
[345355.715040] Hardware name: Giada Default string/Braswell, BIOS 5.11
11/14/2017
[345355.802506] RIP: 0010:0xfffffb25408b0300
[345355.850452] RSP: 0018:ffff9def3a503ea0 EFLAGS: 00010206
[345355.913997] RAX: dead000000000200 RBX: ffff9def3a51a770 RCX:
ffff9def3a503ee0
[345356.000422] RDX: 0000000000000040 RSI: fffffb25408b0300 RDI:
ffff9deef42c5820
[345356.086848] RBP: ffff9def3a503ec8 R08: ffff9def3a503ee8 R09:
ffff9def3a503ee8
[345356.173274] R10: 0000000000000000 R11: 0000000000000040 R12:
0000000000000100
[345356.259699] R13: ffff9deef42c5820 R14: fffffb25408b0300 R15:
ffff9deef42c5820
[345356.346125] FS: 00007f908451ca80(0000) GS:ffff9def3a500000(0000)
knlGS:0000000000000000
[345356.443991] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[345356.513777] CR2: fffffb25408b0300 CR3: 0000000079afc000 CR4:
00000000001006e0
[345356.600203] Call Trace:
[345356.630468] <IRQ>
[345356.655536] ? call_timer_fn+0x32/0x140
[345356.702437] run_timer_softirq+0x1ed/0x440
[345356.752465] __do_softirq+0xf2/0x288
[345356.796250] irq_exit+0xb6/0xc0
[345356.834834] smp_apic_timer_interrupt+0x71/0x140
[345356.891096] apic_timer_interrupt+0x84/0x90
[345356.942161] </IRQ>
[345356.968268] RIP: 0010:oops_end+0x74/0xd0
[345357.016209] RSP: 0018:ffffb70fc1383390 EFLAGS: 00000246 ORIG_RAX:
ffffffffffffff11
[345357.107834] RAX: 0000000000000001 RBX: 0000000000000246 RCX:
0000000000000006
[345357.194263] RDX: 0000000000000000 RSI: 0000000000000001 RDI:
0000000000000246
[345357.280689] RBP: ffffb70fc13833a8 R08: 0000000000000001 R09:
0000000000000352
[345357.367111] R10: 0000000000000000 R11: ffffffff89d5180e R12:
000000000000000b
[345357.453540] R13: ffffb70fc1383418 R14: 0000000000000000 R15:
0000000000000000
[345357.539968] die+0x42/0x50
[345357.573351] do_general_protection+0x9d/0x180
[345357.626497] general_protection+0x25/0x50
[345357.675479] RIP: 0010:shrink_slab.part.50+0x2bc/0x440
[345357.736942] RSP: 0018:ffffb70fc13834c0 EFLAGS: 00010286
[345357.800490] RAX: ffff9def34c0d000 RBX: 0000000000000046 RCX:
0000000000000001
[345357.886915] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000000000000
[345357.973341] RBP: ffffb70fc1383580 R08: 28f5c28f5c28f5c3 R09:
000000000000000f
[345358.059767] R10: ffffb70fc13835a0 R11: 0000000000000001 R12:
000fffffbfffffd8
[345358.146192] R13: 0000000000000400 R14: 0000000000000000 R15:
0000000000005750
[345358.232622] shrink_slab+0x29/0x30
[345358.274324] shrink_node+0x108/0x310
[345358.318109] do_try_to_free_pages+0xee/0x360
[345358.370215] try_to_free_pages+0xf1/0x1c0
[345358.419199] __alloc_pages_slowpath+0x405/0xec0
[345358.474426] __alloc_pages_nodemask+0x265/0x280
[345358.529650] alloc_pages_current+0x6a/0xe0
[345358.579720] __setup_page_dma.isra.30.constprop.53+0x13a/0x1c0 [i915]
[345358.657919] alloc_pt+0x45/0x70 [i915]
[345358.703890] gen8_ppgtt_alloc_pdp+0x169/0x330 [i915]
[345358.764419] gen8_ppgtt_alloc_3lvl+0x1e/0x20 [i915]
[345358.823906] ppgtt_bind_vma+0x6a/0x80 [i915]
[345358.876118] i915_vma_bind+0x69/0xd0 [i915]
[345358.927288] __i915_vma_do_pin+0x452/0x4a0 [i915]
[345358.984695] eb_lookup_vmas+0x829/0xaf0 [i915]
[345359.038950] ? __pm_runtime_resume+0x5b/0x80
[345359.091088] i915_gem_do_execbuffer+0x49d/0x1060 [i915]
[345359.154703] ? _cond_resched+0x1a/0x50
[345359.200568] ? ___slab_alloc+0x223/0x4e0
[345359.248511] ? kvmalloc_node+0x75/0x80
[345359.294414] ? __i915_gem_object_set_pages+0xda/0x150 [i915]
[345359.363225] ? __slab_alloc+0x20/0x40
[345359.408052] ? __kmalloc_node+0x1f9/0x2c0
[345359.457071] i915_gem_execbuffer2+0x1b3/0x390 [i915]
[345359.517603] ? i915_gem_set_domain_ioctl+0x1ca/0x2b0 [i915]
[345359.585408] ? i915_gem_execbuffer+0x2c0/0x2c0 [i915]
[345359.646965] drm_ioctl_kernel+0x6b/0xb0 [drm]
[345359.700206] drm_ioctl+0x3e4/0x450 [drm]
[345359.748173] ? i915_gem_execbuffer+0x2c0/0x2c0 [i915]
[345359.809710] ? pick_next_task_fair+0x289/0x5d0
[345359.863891] ? __switch_to+0x13f/0x500
[345359.909758] ? kmem_cache_free+0x1cb/0x1e0
[345359.959784] do_vfs_ioctl+0xa4/0x600
[345360.003566] ? __schedule+0x3de/0x8b0
[345360.048392] SyS_ioctl+0x79/0x90
[345360.088018] do_syscall_64+0x73/0x130
[345360.132841] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[345360.194307] RIP: 0033:0x7f907c302f47
[345360.238091] RSP: 002b:00007ffdfb3e0418 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[345360.329716] RAX: ffffffffffffffda RBX: 00005641d5fdcc60 RCX:
00007f907c302f47
[345360.416142] RDX: 00007ffdfb3e0460 RSI: 0000000040406469 RDI:
0000000000000075
[345360.502567] RBP: 00007ffdfb3e0460 R08: 0000000000041801 R09:
000000000000000b
[345360.588994] R10: 0000000000000007 R11: 0000000000000246 R12:
0000000040406469
[345360.675419] R13: 0000000000000075 R14: 00007f9067ffc4d8 R15:
0000000000000000
[345360.761845] Code: 00 00 00 00 00 00 00 02 00 00 00 60 bd ba 40 25 fb ff ff
a0 04 25 41 25 fb ff ff 00 00 00 00 00 00 00 00 00 d0 c0 34 ef 9d ff ff <00> 00
00 c0 ff ff 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[345360.988778] RIP: 0xfffffb25408b0300 RSP: ffff9def3a503ea0
[345361.054400] CR2: fffffb25408b0300
[345361.095071] ---[ end trace 497be554d4bfdb9c ]---
[345361.095079] general protection fault: 0000 [#4] SMP PTI
[345361.095081] Modules linked in: input_leds joydev hid_generic usbhid hid
btrfs zstd_compress xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs
libcrc32c mceusb lirc_dev rc_core intel_rapl btusb intel_powerclamp coretemp
kvm_intel btrtl btbcm kvm btintel bluetooth irqbypass punit_atom_debug
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_hda_codec_hdmi
aesni_intel aes_x86_64 snd_hda_codec_realtek crypto_simd snd_hda_codec_generic
glue_helper cryptd intel_cstate ecdh_generic snd_hda_intel snd_hda_codec
snd_hda_core serio_raw snd_hwdep snd_pcm snd_timer snd mei_txe lpc_ich shpchp
mei soundcore pwm_lpss_platform pwm_lpss tpm_crb intel_int0002_vgpio mac_hid
binfmt_misc nls_iso8859_1 i915 i2c_algo_bit drm_kms_helper syscopyarea
sysfillrect sysimgblt fb_sys_fops r8169 psmouse drm ahci
[345361.095139] sdhci_pci mii libahci sdhci video
[345361.095147] CPU: 0 PID: 15582 Com
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.15.0-30-generic 4.15.0-30.32~16.04.1
ProcVersionSignature: Ubuntu 4.15.0-30.32~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-30-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Mon Aug 20 14:07:08 2018
InstallationDate: Installed on 2018-08-08 (11 days ago)
InstallationMedia: Ubuntu-Server 16.04.4 LTS "Xenial Xerus" - Release amd64
(20180228)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-signed-hwe (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1788024
Title:
Video freezes, audio repeats short buffer, 16.04.4, kernel 4.15.0-30
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