I just had this happen to me. I'll attach the relevant part of the syslog. If there's any more info that I could give that would help just let me know. Using Kernel 5.3.0-10-generic from Eoan.
Oct 5 18:02:26 kernel: [493310.092229] BUG: kernel NULL pointer dereference, address: 00000000000002ac Oct 5 18:02:26 kernel: [493310.092235] #PF: supervisor read access in kernel mode Oct 5 18:02:26 kernel: [493310.092237] #PF: error_code(0x0000) - not-present page Oct 5 18:02:26 kernel: [493310.092239] PGD 0 P4D 0 Oct 5 18:02:26 kernel: [493310.092244] Oops: 0000 [#1] SMP NOPTI Oct 5 18:02:26 kernel: [493310.092248] CPU: 0 PID: 2063 Comm: kworker/u32:3 Not tainted 5.3.0-10-generic #11-Ubuntu Oct 5 18:02:26 kernel: [493310.092250] Hardware name: Micro-Star International Co., Ltd MS-7C02/B450 TOMAHAWK (MS-7C02), BIOS 1.50 01/25/2019 Oct 5 18:02:26 kernel: [493310.092266] Workqueue: events_unbound commit_work [drm_kms_helper] Oct 5 18:02:26 kernel: [493310.092409] RIP: 0010:dc_stream_log+0x12/0xc0 [amdgpu] Oct 5 18:02:26 kernel: [493310.092414] Code: 83 f1 01 0f b6 c9 e8 8d 92 35 d3 e9 71 ff ff ff 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 f2 bf 04 00 00 00 48 89 e5 53 <8b> 86 ac 02 00 00 48 89 f3 8b 8e 0c 01 00 00 50 8b 86 28 01 00 00 Oct 5 18:02:26 kernel: [493310.092418] RSP: 0018:ffffb81e08617b80 EFLAGS: 00010202 Oct 5 18:02:26 kernel: [493310.092422] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000002 Oct 5 18:02:26 kernel: [493310.092424] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 Oct 5 18:02:26 kernel: [493310.092427] RBP: ffffb81e08617b88 R08: 0000000000000000 R09: 0000000000000001 Oct 5 18:02:26 kernel: [493310.092430] R10: ffff9c49fea173c8 R11: 0000000000000000 R12: ffff9c43047a0000 Oct 5 18:02:26 kernel: [493310.092432] R13: ffff9c49f2e00000 R14: ffff9c43047a0000 R15: ffff9c49e90c0000 Oct 5 18:02:26 kernel: [493310.092436] FS: 0000000000000000(0000) GS:ffff9c49fea00000(0000) knlGS:0000000000000000 Oct 5 18:02:26 kernel: [493310.092439] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Oct 5 18:02:26 kernel: [493310.092441] CR2: 00000000000002ac CR3: 00000007ecba0000 CR4: 00000000003406f0 Oct 5 18:02:26 kernel: [493310.092445] DR0: 000000001004c7c0 DR1: 0000000010183c60 DR2: 00000000100f14a0 Oct 5 18:02:26 kernel: [493310.092447] DR3: 00000000100efd10 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Oct 5 18:02:26 kernel: [493310.092449] Call Trace: Oct 5 18:02:26 kernel: [493310.092611] dc_commit_state+0x7e/0xb0 [amdgpu] Oct 5 18:02:26 kernel: [493310.092745] amdgpu_dm_atomic_commit_tail+0x3bf/0xfb0 [amdgpu] Oct 5 18:02:26 kernel: [493310.092753] ? cpumask_next_and+0x1e/0x20 Oct 5 18:02:26 kernel: [493310.092759] ? free_one_page+0xb7/0x4b0 Oct 5 18:02:26 kernel: [493310.092764] ? __switch_to_asm+0x40/0x70 Oct 5 18:02:26 kernel: [493310.092767] ? __switch_to_asm+0x34/0x70 Oct 5 18:02:26 kernel: [493310.092770] ? __switch_to_asm+0x40/0x70 Oct 5 18:02:26 kernel: [493310.092773] ? __switch_to_asm+0x34/0x70 Oct 5 18:02:26 kernel: [493310.092776] ? __switch_to_asm+0x40/0x70 Oct 5 18:02:26 kernel: [493310.092779] ? __switch_to_asm+0x34/0x70 Oct 5 18:02:26 kernel: [493310.092782] ? __switch_to_asm+0x40/0x70 Oct 5 18:02:26 kernel: [493310.092785] ? __switch_to_asm+0x34/0x70 Oct 5 18:02:26 kernel: [493310.092788] ? __switch_to_asm+0x40/0x70 Oct 5 18:02:26 kernel: [493310.092791] ? __switch_to_asm+0x34/0x70 Oct 5 18:02:26 kernel: [493310.092794] ? __switch_to_asm+0x40/0x70 Oct 5 18:02:26 kernel: [493310.092797] ? __switch_to_asm+0x34/0x70 Oct 5 18:02:26 kernel: [493310.092801] ? select_idle_sibling+0x1f/0x70 Oct 5 18:02:26 kernel: [493310.092804] ? select_task_rq_fair+0x379/0x5c0 Oct 5 18:02:26 kernel: [493310.092807] ? _cond_resched+0x19/0x30 Oct 5 18:02:26 kernel: [493310.092810] ? wait_for_completion_timeout+0x3a/0x120 Oct 5 18:02:26 kernel: [493310.092824] commit_tail+0x41/0x70 [drm_kms_helper] Oct 5 18:02:26 kernel: [493310.092836] ? commit_tail+0x41/0x70 [drm_kms_helper] Oct 5 18:02:26 kernel: [493310.092848] commit_work+0x12/0x20 [drm_kms_helper] Oct 5 18:02:26 kernel: [493310.092852] process_one_work+0x1db/0x380 Oct 5 18:02:26 kernel: [493310.092855] worker_thread+0x4d/0x400 Oct 5 18:02:26 kernel: [493310.092860] kthread+0x104/0x140 Oct 5 18:02:26 kernel: [493310.092863] ? process_one_work+0x380/0x380 Oct 5 18:02:26 kernel: [493310.092866] ? kthread_park+0x80/0x80 Oct 5 18:02:26 kernel: [493310.092870] ret_from_fork+0x22/0x40 Oct 5 18:02:26 kernel: [493310.092873] Modules linked in: ppp_mppe ppp_async nf_conntrack_pptp nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c snd_seq_dummy ccm binfmt_misc edac_mce_amd kvm_amd snd_hda_codec_realtek snd_hda_codec_generic kvm ledtrig_audio irqbypass snd_hda_codec_hdmi snd_hda_intel snd_usb_audio snd_hda_codec snd_usbmidi_lib snd_hda_core mc snd_hwdep snd_pcm ath9k_htc ath9k_common snd_seq_midi crct10dif_pclmul amdgpu ath9k_hw snd_seq_midi_event snd_rawmidi crc32_pclmul ath amd_iommu_v2 gpu_sched mac80211 ghash_clmulni_intel snd_seq ttm snd_seq_device drm_kms_helper snd_timer drm aesni_intel snd cfg80211 i2c_algo_bit aes_x86_64 fb_sys_fops syscopyarea crypto_simd sysfillrect sysimgblt libarc4 ccp serio_raw wmi_bmof cryptd joydev glue_helper soundcore input_leds k10temp mac_hid sch_fq_codel nct6775 hwmon_vid parport_pc ppdev lp parport ip_tables x_tables autofs4 uas usb_storage hid_generic usbhid hid i2c_piix4 r8169 realtek ahci libahci wmi gpio_amdpt gpio_generic Oct 5 18:02:26 kernel: [493310.092927] CR2: 00000000000002ac Oct 5 18:02:26 kernel: [493310.092930] ---[ end trace dc5b51ddd231d2ed ]--- Oct 5 18:02:26 kernel: [493310.093055] RIP: 0010:dc_stream_log+0x12/0xc0 [amdgpu] Oct 5 18:02:26 kernel: [493310.093059] Code: 83 f1 01 0f b6 c9 e8 8d 92 35 d3 e9 71 ff ff ff 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 f2 bf 04 00 00 00 48 89 e5 53 <8b> 86 ac 02 00 00 48 89 f3 8b 8e 0c 01 00 00 50 8b 86 28 01 00 00 Oct 5 18:02:26 kernel: [493310.093061] RSP: 0018:ffffb81e08617b80 EFLAGS: 00010202 Oct 5 18:02:26 kernel: [493310.093063] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000002 Oct 5 18:02:26 kernel: [493310.093065] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 Oct 5 18:02:26 kernel: [493310.093066] RBP: ffffb81e08617b88 R08: 0000000000000000 R09: 0000000000000001 Oct 5 18:02:26 kernel: [493310.093068] R10: ffff9c49fea173c8 R11: 0000000000000000 R12: ffff9c43047a0000 Oct 5 18:02:26 kernel: [493310.093070] R13: ffff9c49f2e00000 R14: ffff9c43047a0000 R15: ffff9c49e90c0000 Oct 5 18:02:26 kernel: [493310.093072] FS: 0000000000000000(0000) GS:ffff9c49fea00000(0000) knlGS:0000000000000000 Oct 5 18:02:26 kernel: [493310.093074] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Oct 5 18:02:26 kernel: [493310.093076] CR2: 00000000000002ac CR3: 00000007ecba0000 CR4: 00000000003406f0 Oct 5 18:02:26 kernel: [493310.093078] DR0: 000000001004c7c0 DR1: 0000000010183c60 DR2: 00000000100f14a0 Oct 5 18:02:26 kernel: [493310.093080] DR3: 00000000100efd10 DR6: 00000000ffff0ff0 DR7: 0000000000000600 -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
