I have a similar issue with LXDE 18.04. sb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.6 LTS Release: 18.04 Codename: bionic
It seems to be related to nouveau driver when in use by the chromium web engine. Chrome, Chromium, Brave freeze the system (crash report below), in some occasions if you can kill the browser (if you can) and enter CTRL+DEL several times and wait a few minutes (3 to 10 min). [40802.271418] [TTM] Buffer eviction failed [40802.289063] ------------[ cut here ]------------ [40802.289067] Trying to vfree() bad address (00000000b4473d8e) [40802.289086] WARNING: CPU: 1 PID: 12940 at /build/linux-hwe-5.4-rs4SmW/linux-hwe-5.4-5.4.0/mm/vmalloc.c:2240 __vunmap+0x1fe/0x210 [40802.289087] Modules linked in: cdc_mbim cdc_ncm ppp_deflate bsd_comp ppp_async cdc_ether qmi_wwan cdc_wdm option usbnet usb_wwan usbserial mii nls_utf8 isofs binfmt_misc nouveau mxm_wmi wmi video ttm coretemp kvm_intel drm_kms_helper kvm drm input_leds snd_hda_codec_via snd_hda_codec_generic serio_raw ledtrig_audio snd_hda_intel i2c_algo_bit lpc_ich snd_intel_dspcfg fb_sys_fops snd_hda_codec syscopyarea snd_hda_core sysfillrect sysimgblt asus_atk0110 snd_hwdep mac_hid sch_fq_codel tw5864 solo6x10 videobuf2_dma_contig videobuf2_dma_sg videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd soundcore parport_pc ppdev lp parport ip_tables x_tables autofs4 uas usb_storage psmouse r8169 pata_acpi pata_jmicron realtek [40802.289121] CPU: 1 PID: 12940 Comm: chromium-browse Not tainted 5.4.0-55-generic #61~18.04.1-Ubuntu [40802.289122] Hardware name: System manufacturer System Product Name/P5Q SE PLUS, BIOS 2204 08/28/2009 [40802.289124] RIP: 0010:__vunmap+0x1fe/0x210 [40802.289126] Code: e8 67 85 e2 ff 0f 0b eb e0 31 d2 31 f6 48 c7 c7 ff ff ff ff e8 c3 fc ff ff eb c6 48 89 fe 48 c7 c7 08 76 36 a0 e8 42 85 e2 ff <0f> 0b eb bb 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 [40802.289126] RSP: 0018:ffffa33e00fa38e0 EFLAGS: 00010286 [40802.289128] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000006 [40802.289128] RDX: 0000000000000007 RSI: 0000000000000086 RDI: ffff8e8baba978c0 [40802.289129] RBP: ffffa33e00fa3908 R08: 00000000000004f3 R09: 0000000000000004 [40802.289130] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000a80 [40802.289130] R13: ffff8e8ba133ba80 R14: 0000251bee76401f R15: 0000000000000018 [40802.289132] FS: 00007fa148d3fc00(0000) GS:ffff8e8baba80000(0000) knlGS:0000000000000000 [40802.289132] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [40802.289133] CR2: 00007fc3c86f7fd0 CR3: 000000009707c000 CR4: 00000000000406e0 [40802.289134] Call Trace: [40802.289139] vunmap+0x2f/0x40 [40802.289213] nvkm_umem_unmap+0x4e/0x70 [nouveau] [40802.289233] nvkm_object_dtor+0xa2/0x180 [nouveau] [40802.289254] nvkm_object_del+0x25/0x90 [nouveau] [40802.289274] nvkm_ioctl_del+0x8c/0xa0 [nouveau] [40802.289294] nvkm_ioctl+0x11d/0x280 [nouveau] [40802.289328] nvkm_client_ioctl+0x12/0x20 [nouveau] [40802.289347] nvif_object_ioctl+0x47/0x50 [nouveau] [40802.289366] nvif_object_fini+0x5a/0x80 [nouveau] [40802.289386] nvif_mem_fini+0xe/0x10 [nouveau] [40802.289418] nouveau_mem_fini+0x57/0x70 [nouveau] [40802.289451] nouveau_mem_del+0x1d/0x40 [nouveau] [40802.289483] nouveau_manager_del+0x11/0x20 [nouveau] [40802.289489] ttm_bo_cleanup_memtype_use+0x79/0x80 [ttm] [40802.289492] ttm_bo_release+0x1d9/0x220 [ttm] [40802.289495] ttm_bo_put+0x24/0x30 [ttm] [40802.289528] nouveau_gem_object_del+0x55/0x90 [nouveau] [40802.289554] drm_gem_object_free+0x45/0x80 [drm] [40802.289563] drm_gem_object_put_unlocked+0x53/0x70 [drm] [40802.289571] drm_gem_object_handle_put_unlocked+0x6a/0xb0 [drm] [40802.289580] drm_gem_object_release_handle+0x74/0xa0 [drm] [40802.289588] ? drm_gem_object_handle_put_unlocked+0xb0/0xb0 [drm] [40802.289592] idr_for_each+0x4c/0xd0 [40802.289601] drm_gem_release+0x20/0x30 [drm] [40802.289609] drm_file_free.part.11+0x215/0x260 [drm] [40802.289617] drm_release+0x9e/0xd0 [drm] [40802.289620] __fput+0xc6/0x260 [40802.289621] ____fput+0xe/0x10 [40802.289624] task_work_run+0x9d/0xc0 [40802.289626] do_exit+0x382/0xb80 [40802.289628] do_group_exit+0x43/0xa0 [40802.289630] get_signal+0x14f/0x860 [40802.289632] do_signal+0x34/0x6d0 [40802.289634] ? do_vfs_ioctl+0xa9/0x640 [40802.289636] ? handle_mm_fault+0xcb/0x210 [40802.289639] exit_to_usermode_loop+0x90/0x130 [40802.289640] do_syscall_64+0x170/0x190 [40802.289642] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [40802.289643] RIP: 0033:0x7fa143499217 [40802.289647] Code: Bad RIP value. [40802.289648] RSP: 002b:00007fff72e36638 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [40802.289649] RAX: ffffffffffffffea RBX: 0000556556e71310 RCX: 00007fa143499217 [40802.289650] RDX: 00007fff72e36690 RSI: 00000000c0306480 RDI: 0000000000000018 [40802.289651] RBP: 00007fff72e36690 R08: 0000000000000000 R09: 000055655407f010 [40802.289652] R10: 0000000000000030 R11: 0000000000000246 R12: 00000000c0306480 [40802.289652] R13: 0000000000000018 R14: 0000556555615d78 R15: 00005565541d5ba0 [40802.289654] ---[ end trace e140f08fb87ca3be ]--- [78895.033346] nouveau 0000:01:00.0: fb: trapped read at 010063f000 on channel -1 [1fed0000 unknown] engine 06 [BAR] client 08 [PFIFO_READ] subclient 01 [IN] reason 00000002 [PAGE_NOT_PRESENT] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1884726 Title: [TTM] Buffer eviction failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1884726/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
