Public bug reported: When starting a Firefox compilation job earlier today, my system locked up; ctrl-alt-f1 had no effect, etc. (I was able to restart with the REISUB technique.)
I'm on 64-bit Ubuntu Zesty, and I was running a kernel version that's currently in zesty-proposed to have the fix for https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1674838 . "uname -a" output: Linux olive 4.10.0-22-generic #24-Ubuntu SMP Mon May 22 17:43:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux Here's the relevant snippet from kern.log when the hang happened: ============ May 24 15:43:01 olive kernel: [17665.725782] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 May 24 15:43:01 olive kernel: [17665.725848] IP: gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] May 24 15:43:01 olive kernel: [17665.725879] PGD 0 May 24 15:43:01 olive kernel: [17665.725880] May 24 15:43:01 olive kernel: [17665.725898] Oops: 0002 [#1] SMP May 24 15:43:01 olive kernel: [17665.725912] Modules linked in: msr ccm pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) rfcomm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 bridge stp llc ebtable_filter ebtables cmac bnep binfmt_misc algif_skcipher af_alg nls_iso8859_1 dm_crypt intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd intel_cstate intel_rapl_perf btusb btrtl btbcm btintel bluetooth arc4 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev input_leds media joydev intel_pch_thermal serio_raw snd_hda_codec_hdmi snd_hda_codec_realtek iwlmvm snd_hda_codec_generic mac80211 lpc_ich snd_hda_intel thinkpad_acpi May 24 15:43:01 olive kernel: [17665.726220] snd_hda_codec nvram snd_hda_core snd_hwdep snd_seq_midi snd_seq_midi_event iwlwifi snd_rawmidi snd_pcm rtsx_pci_ms cfg80211 snd_seq memstick snd_seq_device snd_timer snd shpchp mei_me mei soundcore mac_hid ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 xt_comment nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat libcrc32c nf_conntrack_ftp nf_conntrack iptable_filter parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid hid rtsx_pci_sdmmc i915 nouveau mxm_wmi psmouse i2c_algo_bit ttm rtsx_pci e1000e drm_kms_helper ahci libahci syscopyarea sysfillrect ptp May 24 15:43:01 olive kernel: [17665.726530] sysimgblt pps_core fb_sys_fops drm wmi fjes video May 24 15:43:01 olive kernel: [17665.726562] CPU: 1 PID: 1794 Comm: Xorg Tainted: G OE 4.10.0-22-generic #24-Ubuntu May 24 15:43:01 olive kernel: [17665.726599] Hardware name: LENOVO 20E2CTO1WW/20E2CTO1WW, BIOS N11ET41W (1.17 ) 03/01/2017 May 24 15:43:01 olive kernel: [17665.726630] task: ffff8fdfc78d9680 task.stack: ffffb9324304c000 May 24 15:43:01 olive kernel: [17665.726677] RIP: 0010:gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] May 24 15:43:01 olive kernel: [17665.726709] RSP: 0018:ffffb9324304f898 EFLAGS: 00010246 May 24 15:43:01 olive kernel: [17665.726735] RAX: ffff8fdfc1cf4cc0 RBX: 0000000000000003 RCX: 0000000000000003 May 24 15:43:01 olive kernel: [17665.726767] RDX: 0000000000000000 RSI: ffff8fde2c46c000 RDI: ffff8fdfc1d50000 May 24 15:43:01 olive kernel: [17665.726799] RBP: ffffb9324304f8f0 R08: 0000000000000000 R09: 0000000000000000 May 24 15:43:01 olive kernel: [17665.726830] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8fdc8a002000 May 24 15:43:01 olive kernel: [17665.726862] R13: ffff8fdfca605630 R14: 00000000ff14e000 R15: 0000000000010000 May 24 15:43:01 olive kernel: [17665.726893] FS: 00007f8241ad1a40(0000) GS:ffff8fdfddc40000(0000) knlGS:0000000000000000 May 24 15:43:01 olive kernel: [17665.726928] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 May 24 15:43:01 olive kernel: [17665.726953] CR2: 0000000000000018 CR3: 000000044a7eb000 CR4: 00000000003406e0 May 24 15:43:01 olive kernel: [17665.726982] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 May 24 15:43:01 olive kernel: [17665.727015] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 May 24 15:43:01 olive kernel: [17665.727044] Call Trace: May 24 15:43:01 olive kernel: [17665.727079] gen8_alloc_va_range_3lvl+0xfb/0x9e0 [i915] May 24 15:43:01 olive kernel: [17665.727106] ? swiotlb_map_sg_attrs+0x49/0x110 May 24 15:43:01 olive kernel: [17665.727145] gen8_alloc_va_range+0x23d/0x470 [i915] May 24 15:43:01 olive kernel: [17665.727187] i915_vma_bind+0x7e/0x170 [i915] May 24 15:43:01 olive kernel: [17665.727225] __i915_vma_do_pin+0x2a5/0x450 [i915] May 24 15:43:01 olive kernel: [17665.727265] i915_gem_execbuffer_reserve_vma.isra.31+0x144/0x1b0 [i915] May 24 15:43:01 olive kernel: [17665.727310] i915_gem_execbuffer_reserve.isra.32+0x39e/0x3d0 [i915] May 24 15:43:01 olive kernel: [17665.727355] i915_gem_do_execbuffer.isra.38+0x4ca/0x15c0 [i915] May 24 15:43:01 olive kernel: [17665.727383] ? radix_tree_lookup_slot+0x22/0x50 May 24 15:43:01 olive kernel: [17665.727405] ? find_get_entry+0x20/0x100 May 24 15:43:01 olive kernel: [17665.727441] i915_gem_execbuffer2+0xa1/0x1e0 [i915] May 24 15:43:01 olive kernel: [17665.727474] drm_ioctl+0x21b/0x4c0 [drm] May 24 15:43:01 olive kernel: [17665.727510] ? i915_gem_execbuffer+0x310/0x310 [i915] May 24 15:43:01 olive kernel: [17665.727536] ? __switch_to_xtra+0x13f/0x150 May 24 15:43:01 olive kernel: [17665.727558] do_vfs_ioctl+0xa3/0x610 May 24 15:43:01 olive kernel: [17665.727577] ? __do_page_fault+0x266/0x4e0 May 24 15:43:01 olive kernel: [17665.727598] SyS_ioctl+0x79/0x90 May 24 15:43:01 olive kernel: [17665.727614] entry_SYSCALL_64_fastpath+0x1e/0xad May 24 15:43:01 olive kernel: [17665.727634] RIP: 0033:0x7f823f4ed987 May 24 15:43:01 olive kernel: [17665.727652] RSP: 002b:00007ffed279f4c8 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 May 24 15:43:01 olive kernel: [17665.727684] RAX: ffffffffffffffda RBX: 0000564a6a723410 RCX: 00007f823f4ed987 May 24 15:43:01 olive kernel: [17665.727716] RDX: 00007ffed279f510 RSI: 00000000c0406469 RDI: 000000000000000e May 24 15:43:01 olive kernel: [17665.727747] RBP: 00000000000000be R08: 0000000000000000 R09: 0000000000000000 May 24 15:43:01 olive kernel: [17665.727781] R10: 00000000000049a0 R11: 0000000000003246 R12: 0000000000000141 May 24 15:43:01 olive kernel: [17665.727814] R13: 00007ffed279ff78 R14: 0000000000000047 R15: 0000000000000354 May 24 15:43:01 olive kernel: [17665.727844] Code: e6 48 8b 90 20 03 00 00 48 8b b8 d8 02 00 00 48 8b 52 08 48 83 ca 03 e8 aa cd ff ff 48 8b 45 b0 48 8b 4d c8 48 8b 10 48 8b 45 d0 <4c> 89 24 ca 48 0f ab 08 0f 1f 44 00 00 e9 53 ff ff ff 65 8b 05 May 24 15:43:01 olive kernel: [17665.727963] RIP: gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] RSP: ffffb9324304f898 May 24 15:43:01 olive kernel: [17665.728002] CR2: 0000000000000018 May 24 15:43:01 olive kernel: [17665.752162] ---[ end trace d6e694cc9f20f7dc ]--- ============ ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Summary changed: - Random system lockup + Random system lockup with " BUG: unable to handle kernel NULL pointer dereference at 0000000000000018", "IP: gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915]" -- 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/1693357 Title: Random system lockup with " BUG: unable to handle kernel NULL pointer dereference at 0000000000000018", "IP: gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915]" Status in linux package in Ubuntu: Incomplete Bug description: When starting a Firefox compilation job earlier today, my system locked up; ctrl-alt-f1 had no effect, etc. (I was able to restart with the REISUB technique.) I'm on 64-bit Ubuntu Zesty, and I was running a kernel version that's currently in zesty-proposed to have the fix for https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1674838 . "uname -a" output: Linux olive 4.10.0-22-generic #24-Ubuntu SMP Mon May 22 17:43:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux Here's the relevant snippet from kern.log when the hang happened: ============ May 24 15:43:01 olive kernel: [17665.725782] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 May 24 15:43:01 olive kernel: [17665.725848] IP: gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] May 24 15:43:01 olive kernel: [17665.725879] PGD 0 May 24 15:43:01 olive kernel: [17665.725880] May 24 15:43:01 olive kernel: [17665.725898] Oops: 0002 [#1] SMP May 24 15:43:01 olive kernel: [17665.725912] Modules linked in: msr ccm pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) rfcomm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 bridge stp llc ebtable_filter ebtables cmac bnep binfmt_misc algif_skcipher af_alg nls_iso8859_1 dm_crypt intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd intel_cstate intel_rapl_perf btusb btrtl btbcm btintel bluetooth arc4 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev input_leds media joydev intel_pch_thermal serio_raw snd_hda_codec_hdmi snd_hda_codec_realtek iwlmvm snd_hda_codec_generic mac80211 lpc_ich snd_hda_intel thinkpad_acpi May 24 15:43:01 olive kernel: [17665.726220] snd_hda_codec nvram snd_hda_core snd_hwdep snd_seq_midi snd_seq_midi_event iwlwifi snd_rawmidi snd_pcm rtsx_pci_ms cfg80211 snd_seq memstick snd_seq_device snd_timer snd shpchp mei_me mei soundcore mac_hid ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 xt_comment nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat libcrc32c nf_conntrack_ftp nf_conntrack iptable_filter parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid hid rtsx_pci_sdmmc i915 nouveau mxm_wmi psmouse i2c_algo_bit ttm rtsx_pci e1000e drm_kms_helper ahci libahci syscopyarea sysfillrect ptp May 24 15:43:01 olive kernel: [17665.726530] sysimgblt pps_core fb_sys_fops drm wmi fjes video May 24 15:43:01 olive kernel: [17665.726562] CPU: 1 PID: 1794 Comm: Xorg Tainted: G OE 4.10.0-22-generic #24-Ubuntu May 24 15:43:01 olive kernel: [17665.726599] Hardware name: LENOVO 20E2CTO1WW/20E2CTO1WW, BIOS N11ET41W (1.17 ) 03/01/2017 May 24 15:43:01 olive kernel: [17665.726630] task: ffff8fdfc78d9680 task.stack: ffffb9324304c000 May 24 15:43:01 olive kernel: [17665.726677] RIP: 0010:gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] May 24 15:43:01 olive kernel: [17665.726709] RSP: 0018:ffffb9324304f898 EFLAGS: 00010246 May 24 15:43:01 olive kernel: [17665.726735] RAX: ffff8fdfc1cf4cc0 RBX: 0000000000000003 RCX: 0000000000000003 May 24 15:43:01 olive kernel: [17665.726767] RDX: 0000000000000000 RSI: ffff8fde2c46c000 RDI: ffff8fdfc1d50000 May 24 15:43:01 olive kernel: [17665.726799] RBP: ffffb9324304f8f0 R08: 0000000000000000 R09: 0000000000000000 May 24 15:43:01 olive kernel: [17665.726830] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8fdc8a002000 May 24 15:43:01 olive kernel: [17665.726862] R13: ffff8fdfca605630 R14: 00000000ff14e000 R15: 0000000000010000 May 24 15:43:01 olive kernel: [17665.726893] FS: 00007f8241ad1a40(0000) GS:ffff8fdfddc40000(0000) knlGS:0000000000000000 May 24 15:43:01 olive kernel: [17665.726928] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 May 24 15:43:01 olive kernel: [17665.726953] CR2: 0000000000000018 CR3: 000000044a7eb000 CR4: 00000000003406e0 May 24 15:43:01 olive kernel: [17665.726982] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 May 24 15:43:01 olive kernel: [17665.727015] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 May 24 15:43:01 olive kernel: [17665.727044] Call Trace: May 24 15:43:01 olive kernel: [17665.727079] gen8_alloc_va_range_3lvl+0xfb/0x9e0 [i915] May 24 15:43:01 olive kernel: [17665.727106] ? swiotlb_map_sg_attrs+0x49/0x110 May 24 15:43:01 olive kernel: [17665.727145] gen8_alloc_va_range+0x23d/0x470 [i915] May 24 15:43:01 olive kernel: [17665.727187] i915_vma_bind+0x7e/0x170 [i915] May 24 15:43:01 olive kernel: [17665.727225] __i915_vma_do_pin+0x2a5/0x450 [i915] May 24 15:43:01 olive kernel: [17665.727265] i915_gem_execbuffer_reserve_vma.isra.31+0x144/0x1b0 [i915] May 24 15:43:01 olive kernel: [17665.727310] i915_gem_execbuffer_reserve.isra.32+0x39e/0x3d0 [i915] May 24 15:43:01 olive kernel: [17665.727355] i915_gem_do_execbuffer.isra.38+0x4ca/0x15c0 [i915] May 24 15:43:01 olive kernel: [17665.727383] ? radix_tree_lookup_slot+0x22/0x50 May 24 15:43:01 olive kernel: [17665.727405] ? find_get_entry+0x20/0x100 May 24 15:43:01 olive kernel: [17665.727441] i915_gem_execbuffer2+0xa1/0x1e0 [i915] May 24 15:43:01 olive kernel: [17665.727474] drm_ioctl+0x21b/0x4c0 [drm] May 24 15:43:01 olive kernel: [17665.727510] ? i915_gem_execbuffer+0x310/0x310 [i915] May 24 15:43:01 olive kernel: [17665.727536] ? __switch_to_xtra+0x13f/0x150 May 24 15:43:01 olive kernel: [17665.727558] do_vfs_ioctl+0xa3/0x610 May 24 15:43:01 olive kernel: [17665.727577] ? __do_page_fault+0x266/0x4e0 May 24 15:43:01 olive kernel: [17665.727598] SyS_ioctl+0x79/0x90 May 24 15:43:01 olive kernel: [17665.727614] entry_SYSCALL_64_fastpath+0x1e/0xad May 24 15:43:01 olive kernel: [17665.727634] RIP: 0033:0x7f823f4ed987 May 24 15:43:01 olive kernel: [17665.727652] RSP: 002b:00007ffed279f4c8 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 May 24 15:43:01 olive kernel: [17665.727684] RAX: ffffffffffffffda RBX: 0000564a6a723410 RCX: 00007f823f4ed987 May 24 15:43:01 olive kernel: [17665.727716] RDX: 00007ffed279f510 RSI: 00000000c0406469 RDI: 000000000000000e May 24 15:43:01 olive kernel: [17665.727747] RBP: 00000000000000be R08: 0000000000000000 R09: 0000000000000000 May 24 15:43:01 olive kernel: [17665.727781] R10: 00000000000049a0 R11: 0000000000003246 R12: 0000000000000141 May 24 15:43:01 olive kernel: [17665.727814] R13: 00007ffed279ff78 R14: 0000000000000047 R15: 0000000000000354 May 24 15:43:01 olive kernel: [17665.727844] Code: e6 48 8b 90 20 03 00 00 48 8b b8 d8 02 00 00 48 8b 52 08 48 83 ca 03 e8 aa cd ff ff 48 8b 45 b0 48 8b 4d c8 48 8b 10 48 8b 45 d0 <4c> 89 24 ca 48 0f ab 08 0f 1f 44 00 00 e9 53 ff ff ff 65 8b 05 May 24 15:43:01 olive kernel: [17665.727963] RIP: gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] RSP: ffffb9324304f898 May 24 15:43:01 olive kernel: [17665.728002] CR2: 0000000000000018 May 24 15:43:01 olive kernel: [17665.752162] ---[ end trace d6e694cc9f20f7dc ]--- ============ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1693357/+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
