[Bug 1827822] Re: kernel null pointer dereference
A month or so after reporting this, amid a frustrating series of unpredictable lockups, I figured out how to run memtest which indicated I had a bad memory card. Since replacing it, I have had no further problems. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1827822 Title: kernel null pointer dereference To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1827822/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1827822] Re: kernel null pointer dereference
No I can not reproduce this. Which is not that surprising, deep kernel bugs are unlikely to be correlated with anything the user is doing at the UI level. System is still crashing sporadically, they do not occur on any of my other systems, nor did they happen on this system before a certain date, which inclines me to claim that they were not happening with older kernels. It did lock up again this morning. Unfortunately the last 5 minutes of the syslog file were corrupted and contained no useful information, so I could not tell you if it was the same problem or not. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1827822 Title: kernel null pointer dereference To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1827822/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1827822] [NEW] kernel null pointer dereference
Public bug reported: System started freezing up a couple days ago. After the latest one, I looked at the syslog file and found what appears to be a kernel bug report. May 5 18:06:03 corbin-goul kernel: [ 4650.769677] BUG: unable to handle kernel NULL pointer dereference at 0008 May 5 18:06:03 corbin-goul kernel: [ 4650.769694] IP: rm_hole+0x19/0x70 [drm] May 5 18:06:03 corbin-goul kernel: [ 4650.769696] PGD 0 P4D 0 May 5 18:06:03 corbin-goul kernel: [ 4650.769698] Oops: 0002 [#1] SMP PTI May 5 18:06:03 corbin-goul kernel: [ 4650.769700] Modules linked in: nls_iso8859_1 snd_hda_codec_realtek snd_hda_codec_hdmi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_hda_codec_generic snd_hda_intel snd _hda_codec kvm snd_hda_core snd_hwdep snd_pcm irqbypass mei_me intel_cstate mei intel_rapl_perf snd_seq_midi input_leds snd_seq_midi_event serio_raw snd_rawmidi snd_seq snd_seq_device snd_timer lpc_ich snd shpchp soundcore mac_hid s ch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi parport_pc ppdev lp parport ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq a sync_xor async_tx xor raid6_pq libcrc32c raid0 multipath linear raid1 hid_generic usbhid hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc i915 May 5 18:06:03 corbin-goul kernel: [ 4650.769733] aesni_intel i2c_algo_bit aes_x86_64 crypto_simd drm_kms_helper glue_helper cryptd syscopyarea sysfillrect sysimgblt r8169 fb_sys_fops ahci mii drm libahci sata_inic162x video May 5 18:06:03 corbin-goul kernel: [ 4650.769743] CPU: 0 PID: 8713 Comm: kworker/0:0 Not tainted 4.15.0-48-generic #51-Ubuntu May 5 18:06:03 corbin-goul kernel: [ 4650.769744] Hardware name: Gigabyte Technology Co., Ltd. H87M-D3H/H87M-D3H, BIOS F3 04/24/2013 May 5 18:06:03 corbin-goul kernel: [ 4650.769770] Workqueue: events __i915_gem_free_work [i915] May 5 18:06:03 corbin-goul kernel: [ 4650.769778] RIP: 0010:rm_hole+0x19/0x70 [drm] May 5 18:06:03 corbin-goul kernel: [ 4650.769779] RSP: 0018:95fb81f2bd20 EFLAGS: 00010202 May 5 18:06:03 corbin-goul kernel: [ 4650.769780] RAX: RBX: 89d51f1382c0 RCX: May 5 18:06:03 corbin-goul kernel: [ 4650.769781] RDX: RSI: 89d765cf8b40 RDI: 89d51f138318 May 5 18:06:03 corbin-goul kernel: [ 4650.769782] RBP: 95fb81f2bd28 R08: 89d5e7b71bc0 R09: May 5 18:06:03 corbin-goul kernel: [ 4650.769783] R10: 95fb81f2bde0 R11: 0001 R12: 89d765cf8b00 May 5 18:06:03 corbin-goul kernel: [ 4650.769784] R13: R14: 89d51f1382e0 R15: 89d75f6c37c8 May 5 18:06:03 corbin-goul kernel: [ 4650.769786] FS: () GS:89d77e20() knlGS: May 5 18:06:03 corbin-goul kernel: [ 4650.769787] CS: 0010 DS: ES: CR0: 80050033 May 5 18:06:03 corbin-goul kernel: [ 4650.769788] CR2: 0008 CR3: 0002eac0a002 CR4: 001606f0 May 5 18:06:03 corbin-goul kernel: [ 4650.769789] Call Trace: May 5 18:06:03 corbin-goul kernel: [ 4650.769797] drm_mm_remove_node+0x29d/0x360 [drm] May 5 18:06:03 corbin-goul kernel: [ 4650.769801] ? __internal_add_timer+0x1f/0x60 May 5 18:06:03 corbin-goul kernel: [ 4650.769816] i915_vma_remove+0x3a/0x100 [i915] May 5 18:06:03 corbin-goul kernel: [ 4650.769830] i915_vma_unbind+0x1cd/0x370 [i915] May 5 18:06:03 corbin-goul kernel: [ 4650.769843] i915_vma_close+0x7d/0xa0 [i915] May 5 18:06:03 corbin-goul kernel: [ 4650.769856] __i915_gem_free_objects+0xa3/0x2c0 [i915] May 5 18:06:03 corbin-goul kernel: [ 4650.769867] __i915_gem_free_work+0x60/0x90 [i915] May 5 18:06:03 corbin-goul kernel: [ 4650.769870] process_one_work+0x1de/0x410 May 5 18:06:03 corbin-goul kernel: [ 4650.769872] worker_thread+0x32/0x410 May 5 18:06:03 corbin-goul kernel: [ 4650.769874] kthread+0x121/0x140 May 5 18:06:03 corbin-goul kernel: [ 4650.769876] ? process_one_work+0x410/0x410 May 5 18:06:03 corbin-goul kernel: [ 4650.769878] ? kthread_create_worker_on_cpu+0x70/0x70 May 5 18:06:03 corbin-goul kernel: [ 4650.769881] ret_from_fork+0x35/0x40 May 5 18:06:03 corbin-goul kernel: [ 4650.769882] Code: 00 00 00 45 31 d2 eb bb 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 53 48 8b 57 30 48 8b 47 38 48 89 fb 48 8d 7f 58 <48> 89 42 08 48 89 10 48 b8 00 01 00 00 00 00 ad de 48 89 47 d8 May 5 18:06:03 corbin-goul kernel: [ 4650.769909] RIP: rm_hole+0x19/0x70 [drm] RSP: 95fb81f2bd20 May 5 18:06:03 corbin-goul kernel: [ 4650.769910] CR2: 0008 May 5 18:06:03 corbin-goul kernel: [ 4650.769912] ---[ end trace 4488bf4278af9827 ]--- ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-48-generic 4.15.0-48.51 ProcVersionSignature: Ubuntu 4.15.0-48.51-generic 4.15.18 Uname: Linux 4.15.0-48-generic x86_64 ApportVersion:
[Bug 189248] Re: the printer print a blank page
Tried installing latest hplip (3.9.120). Still getting nothing but blank pages. -- the printer print a blank page https://bugs.launchpad.net/bugs/189248 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 189248] Re: the printer print a blank page
My daughter is having this problem with an HP Deskjet 3650. Acts like like is printing something, moves the printhead back and forth like it is printing something, but no ink ever hits the paper. It has done this ever since I switched her from Windows to Uuntu karmic. Printer still works OK when we hook it to the Windows box. This sounds exactly like the problem reported in beg 409962, except that it is still happening even with packages where this problem is supposed to be fixed. We are running karmic with cups 1.4.1-5ubuntu2.1 and libpoppler 0.12.0-0ubuntu2.1 and hplip3.9.8-1 ubuntu2. We never had an earlier version of Ubuntu installed on this system, so I can't tell if it used to work sometime in the past. The printer still works perfectly when we hook it up to a Windows system. If this is the same problem, it would be a ghostscript rather than a cups issue. The symptom of moving the printhead but not printing any paper kind of hint at a hplip or ghostscript issue. We need to get this fixed, tax season is fast approaching and she needs a printer. -- the printer print a blank page https://bugs.launchpad.net/bugs/189248 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 409962] Re: poppler 0.11.2 produces blank pages with cups
This may have come back. My daughters HP Deskjet 3650 has been printing blank pages ever since I switched her to Ubuntu from Windows. Running karmic with cups 1.4.1-5ubuntu2.1 and libpoppler 0.12.0-0ubuntu2.1. We never had an earlier version of Ubuntu installed on this system, so I can't tell if it used to work sometime in the past. The printer still works perfectly when we hook it up to a Windows system. -- poppler 0.11.2 produces blank pages with cups https://bugs.launchpad.net/bugs/409962 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 45021] Re: including omnibook module would help with ACPI support on HP laptops
I'm trying to get Ubuntu running on a brand new Toshiba Satellite L355-S7915. Tried installing the current omnibook-source package from kira.net, but it is terminating with a segmentation fault. I happen to be a pretty good C programmer and can probably track this down and fix it with a little help. Never worked in the kernel space before. Probably stupid questions Who is current ominbook-source maintainer and where are latest archives? Any pointers or links to advice on debugging kernel modules? Thx a bunch -Ken -- including omnibook module would help with ACPI support on HP laptops https://bugs.launchpad.net/bugs/45021 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
