Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.
** Information type changed from Private Security to Public -- 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/1600759 Title: Kernel crashes Status in linux package in Ubuntu: New Bug description: Recently, Ubuntu moved to kernel 4.4.x. On my ASUS X751L, this results in my LVDS+external VGA displays to regularly go to sleep/energy saving mode (even when being actively used) or to "scramble". As a consequence, I reverted to kernel 4.2.0-35-generic. This worked very well until I dist-upgraded last thursday. Now, the computer crashes regularly, notably when it is (xscreensaver-)locked (mostly while executing the "molecule" (OpenGL) screensaver). I'm not sure if the crash occurs because of kernel, xscreensaver or an mplayer script I run with cron to play a beep every hour (don't ask why...). This is a critical crash, so I assume there is a security issue behind... Some extracts of my syslog: [computer working...] Jul 8 17:55:05 user-X751LAB sSMTP[10137]: Sent mail for r...@gmail.com (221 2.0.0 closing connection c74sm3677627wme.1 - gsmtp) uid=0 username=root outbytes=691 Jul 8 17:56:01 user-X751LAB CRON[15626]: (user) CMD (/home/user/Softs/alarm_bat.sh) ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ [computer rebooted...] Jul 8 17:59:44 user-X751LAB rsyslogd: [origin software="rsyslogd" swVersion="8.16.0" x-pid="927" x-info="http://www.rsyslog.com";] start Jul 8 17:59:44 user-X751LAB rsyslogd-2222: command 'KLogPermitNonKernelFacility' is currently not permitted - did you already set it via a RainerScript command (v6+ config)? [v8.16.0 try http://www.rsyslog.com/e/2222 ] Jul 8 17:59:44 user-X751LAB rsyslogd: rsyslogd's groupid changed to 109 Jul 8 17:59:44 user-X751LAB sensors[1049]: Adapter: Virtual device Jul 8 17:59:44 user-X751LAB sensors[1049]: temp1: +42.0°C (crit = +108.0°C) Jul 8 17:59:44 user-X751LAB sensors[1049]: temp2: +27.8°C (crit = +105.0°C) Jul 8 17:59:44 user-X751LAB sensors[1049]: temp3: +29.8°C (crit = +105.0°C) Jul 8 17:59:44 user-X751LAB sensors[1049]: coretemp-isa-0000 Jul 8 17:59:44 user-X751LAB sensors[1049]: Adapter: ISA adapter Jul 8 17:59:44 user-X751LAB sensors[1049]: Physical id 0: +45.0°C (high = +105.0°C, crit = +105.0°C) Jul 8 17:59:44 user-X751LAB sensors[1049]: Core 0: +45.0°C (high = +105.0°C, crit = +105.0°C) Jul 8 17:59:44 user-X751LAB sensors[1049]: Core 1: +45.0°C (high = +105.0°C, crit = +105.0°C) Jul 8 17:59:51 user-X751LAB kernel: [ 50.525061] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.526028] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.526578] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.527439] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.527866] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.528311] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.528739] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.529184] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.529588] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.530410] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.530827] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.530965] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.533857] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 17:59:51 user-X751LAB kernel: [ 50.534398] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! Jul 8 18:01:31 user-X751LAB kernel: [ 151.296804] ------------[ cut here ]------------ Jul 8 18:01:31 user-X751LAB kernel: [ 151.296868] WARNING: CPU: 3 PID: 1095 at /build/linux-HVWSXI/linux-4.2.0/drivers/gpu/drm/i915/intel_uncore.c:620 hsw_unclaimed_reg_debug+0x6d/0x90 [i915]() Jul 8 18:01:31 user-X751LAB kernel: [ 151.296871] Unclaimed register detected after reading register 0x22390 Jul 8 18:01:31 user-X751LAB kernel: [ 151.296872] Modules linked in: bnep pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) 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 ctr ccm ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables binfmt_misc nls_iso8859_1 ath9k_htc ath9k_common ath9k_hw ath drbg ansi_cprng dm_crypt uvcvideo videobuf2_vmalloc videobuf2_memops btusb videobuf2_core intel_rapl btrtl btbcm asus_nb_wmi snd_hda_codec_hdmi btintel v4l2_common bluetooth i915 asus_wmi x86_pkg_temp_thermal videodev intel_powerclamp sparse_keymap arc4 media coretemp kvm_intel drm_kms_helper kvm rtl8723be drm crct10dif_pclmul btcoexist crc32_pclmul i2c_algo_bit snd_hda_codec_realtek snd_soc_rt5640 aesni_intel aes_x86_64 rtl8723_common snd_soc_rl6231 rtl_pci snd_hda_codec_generic rtlwifi mac80211 snd_soc_core snd_hda_intel snd_hda_codec snd_hda_core snd_compress lrw gf128mul ac97_bus cfg80211 snd_hwdep snd_pcm_dmaengine snd_pcm glue_helper snd_seq_midi snd_seq_midi_event ablk_helper snd_rawmidi cryptd snd_seq joydev mei_me snd_seq_device snd_timer rtsx_pci_ms input_leds mei snd processor_thermal_device serio_raw lpc_ich memstick dw_dmac dw_dmac_core soundcore i2c_designware_platform snd_soc_sst_acpi shpchp 8250_dw int3400_thermal intel_soc_dts_iosf acpi_thermal_rel int3402_thermal tpm_crb spi_pxa2xx_platform i2c_designware_core int340x_thermal_zone acpi_pad mac_hid parport_pc ppdev lp parport autofs4 hid_generic usbhid psmouse rtsx_pci_sdmmc ahci r8169 libahci rtsx_pci mii wmi sdhci_acpi video sdhci i2c_hid hid Jul 8 18:01:31 user-X751LAB kernel: [ 151.296963] CPU: 3 PID: 1095 Comm: Xorg Tainted: G OE 4.2.0-35-generic #40-Ubuntu Jul 8 18:01:31 user-X751LAB kernel: [ 151.296965] Hardware name: ASUSTeK COMPUTER INC. X751LAB/X751LAB, BIOS X751LAB.504 08/10/2015 Jul 8 18:01:31 user-X751LAB kernel: [ 151.296966] 0000000000000086 00000000a9ebe914 ffff88011ed83c68 ffffffff817f1d7e Jul 8 18:01:31 user-X751LAB kernel: [ 151.296969] ffff88011ed83cc0 ffffffffc07329a0 ffff88011ed83ca8 ffffffff8107cb46 Jul 8 18:01:31 user-X751LAB kernel: [ 151.296971] ffff8800d8c8bcb0 ffff8800cf810000 0000000000022390 0000000000000001 Jul 8 18:01:31 user-X751LAB kernel: [ 151.296973] Call Trace: Jul 8 18:01:31 user-X751LAB kernel: [ 151.296974] <IRQ> [<ffffffff817f1d7e>] dump_stack+0x63/0x81 Jul 8 18:01:31 user-X751LAB kernel: [ 151.296995] [<ffffffff8107cb46>] warn_slowpath_common+0x86/0xc0 Jul 8 18:01:31 user-X751LAB kernel: [ 151.296997] [<ffffffff8107cbd5>] warn_slowpath_fmt+0x55/0x70 Jul 8 18:01:31 user-X751LAB kernel: [ 151.297032] [<ffffffffc06b381d>] hsw_unclaimed_reg_debug+0x6d/0x90 [i915] Jul 8 18:01:31 user-X751LAB kernel: [ 151.297054] [<ffffffffc06b6021>] gen6_read32+0xd1/0x1a0 [i915] Jul 8 18:01:31 user-X751LAB kernel: [ 151.297077] [<ffffffffc06aae08>] intel_lrc_irq_handler+0xc8/0x220 [i915] Jul 8 18:01:31 user-X751LAB kernel: [ 151.297097] [<ffffffffc06a1907>] gen8_gt_irq_handler+0x217/0x240 [i915] Jul 8 18:01:31 user-X751LAB kernel: [ 151.297117] [<ffffffffc06a19ce>] gen8_irq_handler+0x9e/0x590 [i915] Jul 8 18:01:31 user-X751LAB kernel: [ 151.297122] [<ffffffff810d633f>] handle_irq_event_percpu+0x7f/0x1c0 Jul 8 18:01:31 user-X751LAB kernel: [ 151.297124] [<ffffffff810d64c9>] handle_irq_event+0x49/0x70 Jul 8 18:01:31 user-X751LAB kernel: [ 151.297127] [<ffffffff810d9861>] handle_edge_irq+0x81/0x150 Jul 8 18:01:31 user-X751LAB kernel: [ 151.297130] [<ffffffff81018325>] handle_irq+0x25/0x40 Jul 8 18:01:31 user-X751LAB kernel: [ 151.297134] [<ffffffff817fb86f>] do_IRQ+0x4f/0xe0 Jul 8 18:01:31 user-X751LAB kernel: [ 151.297137] [<ffffffff817f97eb>] common_interrupt+0x6b/0x6b Jul 8 18:01:31 user-X751LAB kernel: [ 151.297138] <EOI> [<ffffffffc0691201>] ? i915_gem_obj_to_ggtt_view+0x51/0x110 [i915] Jul 8 18:01:31 user-X751LAB kernel: [ 151.297177] [<ffffffffc069268d>] i915_gem_object_ggtt_unpin_view+0x1d/0xa0 [i915] Jul 8 18:01:31 user-X751LAB kernel: [ 151.297193] [<ffffffffc0684f1d>] i915_gem_do_execbuffer.isra.27+0x7dd/0x10a0 [i915] Jul 8 18:01:31 user-X751LAB kernel: [ 151.297198] [<ffffffff816d1b9e>] ? sock_def_readable+0x3e/0x70 Jul 8 18:01:31 user-X751LAB kernel: [ 151.297202] [<ffffffff811e1deb>] ? __kmalloc+0x1cb/0x270 Jul 8 18:01:31 user-X751LAB kernel: [ 151.297220] [<ffffffffc0686912>] i915_gem_execbuffer2+0xb2/0x240 [i915] Jul 8 18:01:31 user-X751LAB kernel: [ 151.297240] [<ffffffffc04cf505>] drm_ioctl+0x125/0x610 [drm] Jul 8 18:01:31 user-X751LAB kernel: [ 151.297256] [<ffffffffc0686860>] ? i915_gem_execbuffer+0x310/0x310 [i915] Jul 8 18:01:31 user-X751LAB kernel: [ 151.297260] [<ffffffff81213cd5>] do_vfs_ioctl+0x295/0x480 Jul 8 18:01:31 user-X751LAB kernel: [ 151.297263] [<ffffffff81213f39>] SyS_ioctl+0x79/0x90 Jul 8 18:01:31 user-X751LAB kernel: [ 151.297266] [<ffffffff817f8c72>] entry_SYSCALL_64_fastpath+0x16/0x75 Jul 8 18:01:31 user-X751LAB kernel: [ 151.297268] ---[ end trace f020f26a2c6a6513 ]--- To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1600759/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
