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My Intel NUC6i5SYB with a Skylake i5-6260U frequently freezes and shows
the following stack traces in kern.log (see below). If you tell me which
additional information to extract from the system, I will post it here.
Jun 12 23:03:13 montreal kernel: [ 4303.037222] ------------[ cut here
]------------
Jun 12 23:03:13 montreal kernel: [ 4303.037254] WARNING: CPU: 3 PID: 1691 at
/build/linux-FvcHlK/linux-4.4.0/ubuntu/i915/intel_pm.c:3572
skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
Jun 12 23:03:13 montreal kernel: [ 4303.037256] WARN_ON(!wm_changed)
Jun 12 23:03:13 montreal kernel: [ 4303.037257] Modules linked in: arc4 md4
nls_utf8 cifs fscache rfcomm xt_CHECKSUM iptable_mangle ipt_MASQUERADE
nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp
bridge stp llc ebtable_filter bnep ebtables ip6table_filter ip6_tables
iptable_filter ip_tables x_tables snd_hda_codec_hdmi binfmt_misc snd_soc_skl
snd_soc_skl_ipc snd_hda_codec_realtek snd_hda_ext_core snd_hda_codec_generic
snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_core snd_compress ac97_bus
snd_pcm_dmaengine dw_dmac_core snd_hda_intel snd_hda_codec snd_hda_core
snd_hwdep snd_pcm 8250_dw intel_rapl x86_pkg_temp_thermal snd_seq_midi
snd_seq_midi_event intel_powerclamp snd_rawmidi crct10dif_pclmul snd_seq
crc32_pclmul snd_seq_device snd_timer input_leds aesni_intel aes_x86_64 lrw
gf128mul btusb glue_helper btrtl snd ablk_helper cryptd soundcore
ir_xmp_decoder ir_lirc_codec hci_uart ir_mce_kbd_dec
oder idma64 lirc_dev ir_sharp_decoder btbcm virt_dma ir_sanyo_decoder
ir_sony_decoder btqca ir_jvc_decoder mei_me ir_rc6_decoder btintel mei
intel_lpss_pci ir_rc5_decoder ir_nec_decoder bluetooth rc_rc6_mce ite_cir
rc_core intel_lpss_acpi intel_lpss acpi_pad acpi_als kfifo_buf mac_hid
industrialio kvm_intel kvm irqbypass coretemp parport_pc sunrpc ppdev lp
parport autofs4 btrfs xor raid6_pq hid_generic(OE) hid_apple(OE) usbhid(OE)
i915_bpo intel_ips i2c_algo_bit drm_kms_helper syscopyarea ahci sysfillrect
sysimgblt libahci e1000e fb_sys_fops drm ptp sdhci_pci pps_core sdhci video
pinctrl_sunrisepoint pinctrl_intel i2c_hid(OE) hid(OE) fjes
Jun 12 23:03:13 montreal kernel: [ 4303.037359] CPU: 3 PID: 1691 Comm: Xorg
Tainted: G W OE 4.4.0-22-generic #40-Ubuntu
Jun 12 23:03:13 montreal kernel: [ 4303.037361] Hardware name:
/NUC6i5SYB, BIOS SYSKLi35.86A.0044.2016.0512.1734 05/12/2016
Jun 12 23:03:13 montreal kernel: [ 4303.037362] 0000000000000286
000000008a2854c6 ffff880466e23938 ffffffff813e9c53
Jun 12 23:03:13 montreal kernel: [ 4303.037366] ffff880466e23980
ffffffffc02a0c70 ffff880466e23970 ffffffff81080fb2
Jun 12 23:03:13 montreal kernel: [ 4303.037368] ffff88007539a000
ffff8804657a9d9c ffff880075399000 ffff88046c785b78
Jun 12 23:03:13 montreal kernel: [ 4303.037371] Call Trace:
Jun 12 23:03:13 montreal kernel: [ 4303.037377] [<ffffffff813e9c53>]
dump_stack+0x63/0x90
Jun 12 23:03:13 montreal kernel: [ 4303.037382] [<ffffffff81080fb2>]
warn_slowpath_common+0x82/0xc0
Jun 12 23:03:13 montreal kernel: [ 4303.037385] [<ffffffff8108104c>]
warn_slowpath_fmt+0x5c/0x80
Jun 12 23:03:13 montreal kernel: [ 4303.037405] [<ffffffffc01d25cc>]
skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
Jun 12 23:03:13 montreal kernel: [ 4303.037424] [<ffffffffc01d2766>]
skl_update_wm+0x186/0x5f0 [i915_bpo]
Jun 12 23:03:13 montreal kernel: [ 4303.037453] [<ffffffffc025e36f>] ?
intel_ddi_enable_transcoder_func+0x17f/0x260 [i915_bpo]
Jun 12 23:03:13 montreal kernel: [ 4303.037473] [<ffffffffc01d648e>]
intel_update_watermarks+0x1e/0x30 [i915_bpo]
Jun 12 23:03:13 montreal kernel: [ 4303.037500] [<ffffffffc0242401>]
haswell_crtc_enable+0x321/0x8c0 [i915_bpo]
Jun 12 23:03:13 montreal kernel: [ 4303.037527] [<ffffffffc023edad>]
intel_atomic_commit+0x5dd/0xdb0 [i915_bpo]
Jun 12 23:03:13 montreal kernel: [ 4303.037550] [<ffffffffc00aa80e>] ?
drm_atomic_check_only+0x18e/0x590 [drm]
Jun 12 23:03:13 montreal kernel: [ 4303.037567] [<ffffffffc00aac47>]
drm_atomic_commit+0x37/0x60 [drm]
Jun 12 23:03:13 montreal kernel: [ 4303.037577] [<ffffffffc018c9f6>]
drm_atomic_helper_set_config+0x76/0xb0 [drm_kms_helper]
Jun 12 23:03:13 montreal kernel: [ 4303.037592] [<ffffffffc0099e02>]
drm_mode_set_config_internal+0x62/0x100 [drm]
Jun 12 23:03:13 montreal kernel: [ 4303.037608] [<ffffffffc009e322>]
drm_mode_setcrtc+0x3d2/0x4f0 [drm]
Jun 12 23:03:13 montreal kernel: [ 4303.037620] [<ffffffffc008f712>]
drm_ioctl+0x152/0x540 [drm]
Jun 12 23:03:13 montreal kernel: [ 4303.037635] [<ffffffffc009df50>] ?
drm_mode_setplane+0x1b0/0x1b0 [drm]
Jun 12 23:03:13 montreal kernel: [ 4303.037639] [<ffffffff8122026f>]
do_vfs_ioctl+0x29f/0x490
Jun 12 23:03:13 montreal kernel: [ 4303.037642] [<ffffffff8108e0e1>] ?
__set_task_blocked+0x41/0xa0
Jun 12 23:03:13 montreal kernel: [ 4303.037646] [<ffffffff81090a76>] ?
__set_current_blocked+0x36/0x60
Jun 12 23:03:13 montreal kernel: [ 4303.037648] [<ffffffff812204d9>]
SyS_ioctl+0x79/0x90
Jun 12 23:03:13 montreal kernel: [ 4303.037651] [<ffffffff81090d2e>] ?
SyS_rt_sigprocmask+0x8e/0xc0
Jun 12 23:03:13 montreal kernel: [ 4303.037656] [<ffffffff818252f2>]
entry_SYSCALL_64_fastpath+0x16/0x71
Jun 12 23:03:13 montreal kernel: [ 4303.037658] ---[ end trace d9bae43285f5b7df
]---
** Affects: ubuntu
Importance: Undecided
Status: Invalid
--
Frequently hanging system with stack trace in intel_pm.c
https://bugs.launchpad.net/bugs/1591770
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