Public bug reported:

Running Firefox Nightly on a Thinkpad T510 and experiencing lockups in
Wayland and in Xorg. SSHing into the machine works, but the mouse is
unresponsive on the device.

Here are some traces:

Dec 08 19:47:48 ThinkPad-T510 kernel: ------------[ cut here ]------------
Dec 08 19:47:48 ThinkPad-T510 kernel: refcount_t: underflow; use-after-free.
Dec 08 19:47:48 ThinkPad-T510 kernel: WARNING: CPU: 3 PID: 1755 at 
lib/refcount.c:28 refcount_warn_saturate+0xae/0xf0
Dec 08 19:47:48 ThinkPad-T510 kernel: Modules linked in: nfnetlink rfcomm ccm 
cmac algif_hash algif_skcipher af_alg bnep lz4 zram zfs(PO) zunicode(PO) 
zavl(PO) icp(PO) zcommon(PO) znvpair(PO) spl(O) zlua>
Dec 08 19:47:48 ThinkPad-T510 kernel:  drm_kms_helper glue_helper psmouse 
libahci sdhci_pci i2c_i801 cqhci i2c_smbus lpc_ich firewire_core syscopyarea 
crc_itu_t sdhci sysfillrect sysimgblt fb_sys_fops ce>
Dec 08 19:47:48 ThinkPad-T510 kernel: CPU: 3 PID: 1755 Comm: Xwayland Tainted: 
P           O      5.8.0-25-generic #26-Ubuntu
Dec 08 19:47:48 ThinkPad-T510 kernel: Hardware name: LENOVO 43147PU/43147PU, 
BIOS 6MET92WW (1.52 ) 09/26/2012
Dec 08 19:47:48 ThinkPad-T510 kernel: RIP: 0010:refcount_warn_saturate+0xae/0xf0
Dec 08 19:47:48 ThinkPad-T510 kernel: Code: d9 e0 69 01 01 e8 37 8d b1 ff 0f 0b 
5d c3 80 3d c6 e0 69 01 00 75 91 48 c7 c7 48 af 1f b6 c6 05 b6 e0 69 01 01 e8 
17 8d b1 ff <0f> 0b 5d c3 80 3d a4 e0 69 01 0>
Dec 08 19:47:48 ThinkPad-T510 kernel: RSP: 0018:ffffa533874f3cc8 EFLAGS: 
00010282
Dec 08 19:47:48 ThinkPad-T510 kernel: RAX: 0000000000000000 RBX: 
0000000000000002 RCX: ffff8afff3d98cd8
Dec 08 19:47:48 ThinkPad-T510 kernel: RDX: 00000000ffffffd8 RSI: 
0000000000000027 RDI: ffff8afff3d98cd0
Dec 08 19:47:48 ThinkPad-T510 kernel: RBP: ffffa533874f3cc8 R08: 
0000000000000004 R09: 000000000000046d
Dec 08 19:47:48 ThinkPad-T510 kernel: R10: 0000000000000000 R11: 
0000000000000001 R12: 0000000000000004
Dec 08 19:47:48 ThinkPad-T510 kernel: R13: ffff8afee6895800 R14: 
ffff8affe1684800 R15: ffff8affe1992000
Dec 08 19:47:48 ThinkPad-T510 kernel: FS:  00007fc1b91f6a40(0000) 
GS:ffff8afff3d80000(0000) knlGS:0000000000000000
Dec 08 19:47:48 ThinkPad-T510 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 
0000000080050033
Dec 08 19:47:48 ThinkPad-T510 kernel: CR2: 00007ffa033700c0 CR3: 
00000001d46b2006 CR4: 00000000000206e0
Dec 08 19:47:48 ThinkPad-T510 kernel: Call Trace:
Dec 08 19:47:48 ThinkPad-T510 kernel:  ttm_bo_put+0x3f/0x50 [ttm]
Dec 08 19:47:48 ThinkPad-T510 kernel:  nouveau_gem_new+0x8a/0x120 [nouveau]
Dec 08 19:47:48 ThinkPad-T510 kernel:  ? nouveau_gem_new+0x120/0x120 [nouveau]
Dec 08 19:47:48 ThinkPad-T510 kernel:  nouveau_gem_ioctl_new+0x5b/0xd0 [nouveau]
Dec 08 19:47:48 ThinkPad-T510 kernel:  ? nouveau_gem_new+0x120/0x120 [nouveau]
Dec 08 19:47:48 ThinkPad-T510 kernel:  drm_ioctl_kernel+0xae/0xf0 [drm]
Dec 08 19:47:48 ThinkPad-T510 kernel:  drm_ioctl+0x238/0x3d0 [drm]
Dec 08 19:47:48 ThinkPad-T510 kernel:  ? nouveau_gem_new+0x120/0x120 [nouveau]
Dec 08 19:47:48 ThinkPad-T510 kernel:  ? hrtimer_start_range_ns+0x84/0xd0
Dec 08 19:47:48 ThinkPad-T510 kernel:  nouveau_drm_ioctl+0x66/0xc0 [nouveau]
Dec 08 19:47:48 ThinkPad-T510 kernel:  ksys_ioctl+0x8e/0xc0
Dec 08 19:47:48 ThinkPad-T510 kernel:  __x64_sys_ioctl+0x1a/0x20
Dec 08 19:47:48 ThinkPad-T510 kernel:  do_syscall_64+0x49/0xc0
Dec 08 19:47:48 ThinkPad-T510 kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Dec 08 19:47:48 ThinkPad-T510 kernel: RIP: 0033:0x7fc1b990313b
Dec 08 19:47:48 ThinkPad-T510 kernel: Code: 89 d8 49 8d 3c 1c 48 f7 d8 49 39 c4 
72 b5 e8 1c ff ff ff 85 c0 78 ba 4c 89 e0 5b 5d 41 5c c3 f3 0f 1e fa b8 10 00 
00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8>
Dec 08 19:47:48 ThinkPad-T510 kernel: RSP: 002b:00007fff362bd6e8 EFLAGS: 
00000246 ORIG_RAX: 0000000000000010
Dec 08 19:47:48 ThinkPad-T510 kernel: RAX: ffffffffffffffda RBX: 
00007fff362bd740 RCX: 00007fc1b990313b
Dec 08 19:47:48 ThinkPad-T510 kernel: RDX: 00007fff362bd740 RSI: 
00000000c0306480 RDI: 000000000000000e
Dec 08 19:47:48 ThinkPad-T510 kernel: RBP: 00000000c0306480 R08: 
0000000000000000 R09: 0000564a23c97760
Dec 08 19:47:48 ThinkPad-T510 kernel: R10: 0000564a23ce4630 R11: 
0000000000000246 R12: 00007fff362bd740
Dec 08 19:47:48 ThinkPad-T510 kernel: R13: 000000000000000e R14: 
0000564a23383860 R15: 0000000000001000
Dec 08 19:47:48 ThinkPad-T510 kernel: ---[ end trace 52a24d448f20dca6 ]---

Dec 08 19:57:17 ThinkPad-T510 kernel: ------------[ cut here ]------------
Dec 08 19:57:17 ThinkPad-T510 kernel: refcount_t: underflow; use-after-free.
Dec 08 19:57:17 ThinkPad-T510 kernel: WARNING: CPU: 1 PID: 1669 at 
lib/refcount.c:28 refcount_warn_saturate+0xae/0xf0
Dec 08 19:57:17 ThinkPad-T510 kernel: Modules linked in: rfcomm ccm cmac 
algif_hash algif_skcipher af_alg bnep lz4 zram zfs(PO) zunicode(PO) zavl(PO) 
icp(PO) zcommon(PO) znvpair(PO) spl(O) zlua(PO) intel>
Dec 08 19:57:17 ThinkPad-T510 kernel:  cec rc_core aesni_intel crypto_simd 
cryptd ahci glue_helper psmouse drm libahci sdhci_pci i2c_i801 i2c_smbus 
lpc_ich cqhci firewire_ohci e1000e firewire_core sdhci >
Dec 08 19:57:17 ThinkPad-T510 kernel: CPU: 1 PID: 1669 Comm: Xorg Tainted: P    
       O      5.8.0-25-generic #26-Ubuntu
Dec 08 19:57:17 ThinkPad-T510 kernel: Hardware name: LENOVO 43147PU/43147PU, 
BIOS 6MET92WW (1.52 ) 09/26/2012
Dec 08 19:57:17 ThinkPad-T510 kernel: RIP: 0010:refcount_warn_saturate+0xae/0xf0
Dec 08 19:57:17 ThinkPad-T510 kernel: Code: d9 e0 69 01 01 e8 37 8d b1 ff 0f 0b 
5d c3 80 3d c6 e0 69 01 00 75 91 48 c7 c7 48 af 3f 84 c6 05 b6 e0 69 01 01 e8 
17 8d b1 ff <0f> 0b 5d c3 80 3d a4 e0 69 01 0>
Dec 08 19:57:17 ThinkPad-T510 kernel: RSP: 0018:ffffa7b9074fbcc8 EFLAGS: 
00010282
Dec 08 19:57:17 ThinkPad-T510 kernel: RAX: 0000000000000000 RBX: 
0000000000000002 RCX: ffff983073c98cd8
Dec 08 19:57:17 ThinkPad-T510 kernel: RDX: 00000000ffffffd8 RSI: 
0000000000000027 RDI: ffff983073c98cd0
Dec 08 19:57:17 ThinkPad-T510 kernel: RBP: ffffa7b9074fbcc8 R08: 
0000000000000004 R09: 0000000000000467
Dec 08 19:57:17 ThinkPad-T510 kernel: R10: 0000000000000000 R11: 
0000000000000001 R12: 0000000000000004
Dec 08 19:57:17 ThinkPad-T510 kernel: R13: ffff982f5e99b000 R14: 
ffff9830617d1000 R15: ffff983072e00000
Dec 08 19:57:17 ThinkPad-T510 kernel: FS:  00007ff0540f0a40(0000) 
GS:ffff983073c80000(0000) knlGS:0000000000000000
Dec 08 19:57:17 ThinkPad-T510 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 
0000000080050033
Dec 08 19:57:17 ThinkPad-T510 kernel: CR2: 00007fafcaeec3d8 CR3: 
00000001d96c6004 CR4: 00000000000206e0
Dec 08 19:57:17 ThinkPad-T510 kernel: Call Trace:
Dec 08 19:57:17 ThinkPad-T510 kernel:  ttm_bo_put+0x3f/0x50 [ttm]
Dec 08 19:57:17 ThinkPad-T510 kernel:  nouveau_gem_new+0x8a/0x120 [nouveau]
Dec 08 19:57:17 ThinkPad-T510 kernel:  ? nouveau_gem_new+0x120/0x120 [nouveau]
Dec 08 19:57:17 ThinkPad-T510 kernel:  nouveau_gem_ioctl_new+0x5b/0xd0 [nouveau]
Dec 08 19:57:17 ThinkPad-T510 kernel:  ? nouveau_gem_new+0x120/0x120 [nouveau]
Dec 08 19:57:17 ThinkPad-T510 kernel:  drm_ioctl_kernel+0xae/0xf0 [drm]
Dec 08 19:57:17 ThinkPad-T510 kernel:  drm_ioctl+0x238/0x3d0 [drm]
Dec 08 19:57:17 ThinkPad-T510 kernel:  ? nouveau_gem_new+0x120/0x120 [nouveau]
Dec 08 19:57:17 ThinkPad-T510 kernel:  ? __fput+0x16d/0x250
Dec 08 19:57:17 ThinkPad-T510 kernel:  nouveau_drm_ioctl+0x66/0xc0 [nouveau]
Dec 08 19:57:17 ThinkPad-T510 kernel:  ksys_ioctl+0x8e/0xc0
Dec 08 19:57:17 ThinkPad-T510 kernel:  __x64_sys_ioctl+0x1a/0x20
Dec 08 19:57:17 ThinkPad-T510 kernel:  do_syscall_64+0x49/0xc0
Dec 08 19:57:17 ThinkPad-T510 kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Dec 08 19:57:17 ThinkPad-T510 kernel: RIP: 0033:0x7ff05455613b
Dec 08 19:57:17 ThinkPad-T510 kernel: Code: 89 d8 49 8d 3c 1c 48 f7 d8 49 39 c4 
72 b5 e8 1c ff ff ff 85 c0 78 ba 4c 89 e0 5b 5d 41 5c c3 f3 0f 1e fa b8 10 00 
00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8>
Dec 08 19:57:17 ThinkPad-T510 kernel: RSP: 002b:00007ffed41fcd48 EFLAGS: 
00000246 ORIG_RAX: 0000000000000010
Dec 08 19:57:17 ThinkPad-T510 kernel: RAX: ffffffffffffffda RBX: 
00007ffed41fcda0 RCX: 00007ff05455613b
Dec 08 19:57:17 ThinkPad-T510 kernel: RDX: 00007ffed41fcda0 RSI: 
00000000c0306480 RDI: 0000000000000010
Dec 08 19:57:17 ThinkPad-T510 kernel: RBP: 00000000c0306480 R08: 
0000000000000000 R09: 000056536fcef720
Dec 08 19:57:17 ThinkPad-T510 kernel: R10: 0000000000000007 R11: 
0000000000000246 R12: 00007ffed41fcda0
Dec 08 19:57:17 ThinkPad-T510 kernel: R13: 0000000000000010 R14: 
000056536eee6d20 R15: 0000000000001000
Dec 08 19:57:17 ThinkPad-T510 kernel: ---[ end trace 948e5fa1b6518eb7 ]---

[  601.930714] ------------[ cut here ]------------
[  601.930719] Trying to vfree() bad address (000000002507bf51)
[  601.930738] WARNING: CPU: 2 PID: 2881 at mm/vmalloc.c:2281 
__vunmap+0x263/0x280
[  601.930739] Modules linked in: rfcomm ccm cmac algif_hash algif_skcipher 
af_alg bnep lz4 zram zfs(PO) zunicode(PO) zavl(PO) icp(PO) zcommon(PO) 
znvpair(PO) spl(O) zlua(PO) intel_powerclamp coretemp kvm_intel kvm uvcvideo 
joydev input_leds intel_cstate serio_raw iwlmvm snd_hda_codec_conexant 
snd_hda_codec_hdmi snd_hda_codec_generic at24 videobuf2_vmalloc mac80211 
wmi_bmof videobuf2_memops intel_ips videobuf2_v4l2 videobuf2_common libarc4 
snd_hda_intel videodev snd_intel_dspcfg thinkpad_acpi snd_hda_codec mc iwlwifi 
snd_seq_midi nvram ledtrig_audio snd_seq_midi_event btusb btrtl btbcm 
snd_hda_core btintel snd_rawmidi bluetooth cfg80211 snd_hwdep ecdh_generic ecc 
snd_pcm snd_seq snd_seq_device snd_timer mei_me mei snd soundcore mac_hid 
sch_fq_codel msr parport_pc ppdev lp parport ip_tables x_tables autofs4 btrfs 
blake2b_generic xor raid6_pq libcrc32c nouveau mxm_wmi i2c_algo_bit ttm 
drm_kms_helper crct10dif_pclmul crc32_pclmul syscopyarea sysfillrect 
ghash_clmulni_intel sysimgblt fb_sys_fops
[  601.930801]  cec rc_core aesni_intel crypto_simd cryptd ahci glue_helper 
psmouse drm libahci sdhci_pci i2c_i801 i2c_smbus lpc_ich cqhci firewire_ohci 
e1000e firewire_core sdhci crc_itu_t wmi video
[  601.930818] CPU: 2 PID: 2881 Comm: threaded-ml Tainted: P        W  O      
5.8.0-25-generic #26-Ubuntu
[  601.930820] Hardware name: LENOVO 43147PU/43147PU, BIOS 6MET92WW (1.52 ) 
09/26/2012
[  601.930823] RIP: 0010:__vunmap+0x263/0x280
[  601.930827] Code: 01 00 74 a8 e8 1e ca 91 00 31 d2 31 f6 48 c7 c7 ff ff ff 
ff e8 ee cf ff ff eb 91 48 89 fe 48 c7 c7 98 a7 3c 84 e8 82 c5 df ff <0f> 0b eb 
86 4c 89 ee 48 c7 c7 c0 a7 3c 84 e8 6f c5 df ff 0f 0b e9
[  601.930829] RSP: 0018:ffffa7b907f838f8 EFLAGS: 00010282
[  601.930831] RAX: 0000000000000000 RBX: ffff98301ad82900 RCX: ffff983073d18cd8
[  601.930832] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff983073d18cd0
[  601.930833] RBP: ffffa7b907f83920 R08: 0000000000000004 R09: 0000000000000494
[  601.930835] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000240
[  601.930836] R13: ffff9830611ec240 R14: 0000008c266d75c5 R15: ffffa7b907f83a48
[  601.930839] FS:  00007f24237fe640(0000) GS:ffff983073d00000(0000) 
knlGS:0000000000000000
[  601.930840] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  601.930842] CR2: 00007fdb9eba46c0 CR3: 00000002266a0003 CR4: 00000000000206e0
[  601.930843] Call Trace:
[  601.930851]  vunmap+0x30/0x40
[  601.930942]  nvkm_umem_unmap+0x51/0x70 [nouveau]
[  601.930991]  nvkm_object_dtor+0x9f/0x110 [nouveau]
[  601.931045]  nvkm_object_del+0x25/0x90 [nouveau]
[  601.931102]  nvkm_ioctl_del+0x3c/0x60 [nouveau]
[  601.931158]  nvkm_ioctl+0xf0/0x190 [nouveau]
[  601.931250]  nvkm_client_ioctl+0x12/0x20 [nouveau]
[  601.931303]  nvif_object_ioctl+0x4e/0x60 [nouveau]
[  601.931357]  nvif_object_fini+0x5a/0x80 [nouveau]
[  601.931412]  nvif_mem_fini+0xe/0x10 [nouveau]
[  601.931502]  nouveau_mem_fini+0x57/0x70 [nouveau]
[  601.931593]  nouveau_mem_del+0x15/0x30 [nouveau]
[  601.931684]  nouveau_manager_del+0x11/0x20 [nouveau]
[  601.931693]  ttm_bo_cleanup_memtype_use+0x79/0x80 [ttm]
[  601.931700]  ttm_bo_release+0x198/0x380 [ttm]
[  601.931709]  ttm_bo_put+0x30/0x50 [ttm]
[  601.931799]  nouveau_gem_object_del+0x58/0x90 [nouveau]
[  601.931839]  drm_gem_object_free+0x41/0x70 [drm]
[  601.931864]  drm_gem_object_put_unlocked+0x76/0x80 [drm]
[  601.931888]  drm_gem_object_handle_put_unlocked+0x7e/0xb0 [drm]
[  601.931912]  drm_gem_object_release_handle+0x76/0xa0 [drm]
[  601.931936]  ? drm_gem_object_handle_put_unlocked+0xb0/0xb0 [drm]
[  601.931940]  idr_for_each+0x60/0xd0
[  601.931965]  drm_gem_release+0x21/0x30 [drm]
[  601.931988]  drm_file_free.part.0+0x15f/0x170 [drm]
[  601.932011]  drm_close_helper.isra.0+0x65/0x70 [drm]
[  601.932034]  drm_release+0x6a/0x110 [drm]
[  601.932038]  __fput+0xe9/0x250
[  601.932041]  ____fput+0xe/0x10
[  601.932045]  task_work_run+0x6d/0xa0
[  601.932048]  do_exit+0x200/0x440
[  601.932051]  do_group_exit+0x3b/0xb0
[  601.932055]  get_signal+0x174/0x630
[  601.932060]  do_signal+0x2f/0x1d0
[  601.932066]  exit_to_usermode_loop+0x8e/0x120
[  601.932069]  __prepare_exit_to_usermode+0xa2/0xe0
[  601.932073]  __syscall_return_slowpath+0x31/0x160
[  601.932078]  do_syscall_64+0x56/0xc0
[  601.932081]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  601.932084] RIP: 0033:0x7f24a4c3e48f
[  601.932086] Code: Bad RIP value.
[  601.932087] RSP: 002b:00007f24237fd560 EFLAGS: 00000293 ORIG_RAX: 
0000000000000007
[  601.932090] RAX: fffffffffffffdfc RBX: 00007f2438026f70 RCX: 00007f24a4c3e48f
[  601.932092] RDX: 00000000ffffffff RSI: 0000000000000003 RDI: 00007f24180114f0
[  601.932094] RBP: 00007f24380078b0 R08: 0000000000000000 R09: 00000000ffffffff
[  601.932095] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f24180114f0
[  601.932097] R13: 0000000000000003 R14: 00000000ffffffff R15: 00007f24237fe640
[  601.932101] ---[ end trace 948e5fa1b6518eb8 ]---
[  601.937872] ------------[ cut here ]------------
[  601.937877] Trying to vfree() bad address (000000009b2137f3)
[  601.937898] WARNING: CPU: 3 PID: 2881 at mm/vmalloc.c:2281 
__vunmap+0x263/0x280
[  601.937900] Modules linked in: rfcomm ccm cmac algif_hash algif_skcipher 
af_alg bnep lz4 zram zfs(PO) zunicode(PO) zavl(PO) icp(PO) zcommon(PO) 
znvpair(PO) spl(O) zlua(PO) intel_powerclamp coretemp kvm_intel kvm uvcvideo 
joydev input_leds intel_cstate serio_raw iwlmvm snd_hda_codec_conexant 
snd_hda_codec_hdmi snd_hda_codec_generic at24 videobuf2_vmalloc mac80211 
wmi_bmof videobuf2_memops intel_ips videobuf2_v4l2 videobuf2_common libarc4 
snd_hda_intel videodev snd_intel_dspcfg thinkpad_acpi snd_hda_codec mc iwlwifi 
snd_seq_midi nvram ledtrig_audio snd_seq_midi_event btusb btrtl btbcm 
snd_hda_core btintel snd_rawmidi bluetooth cfg80211 snd_hwdep ecdh_generic ecc 
snd_pcm snd_seq snd_seq_device snd_timer mei_me mei snd soundcore mac_hid 
sch_fq_codel msr parport_pc ppdev lp parport ip_tables x_tables autofs4 btrfs 
blake2b_generic xor raid6_pq libcrc32c nouveau mxm_wmi i2c_algo_bit ttm 
drm_kms_helper crct10dif_pclmul crc32_pclmul syscopyarea sysfillrect 
ghash_clmulni_intel sysimgblt fb_sys_fops
[  601.937983]  cec rc_core aesni_intel crypto_simd cryptd ahci glue_helper 
psmouse drm libahci sdhci_pci i2c_i801 i2c_smbus lpc_ich cqhci firewire_ohci 
e1000e firewire_core sdhci crc_itu_t wmi video
[  601.938010] CPU: 3 PID: 2881 Comm: threaded-ml Tainted: P        W  O      
5.8.0-25-generic #26-Ubuntu
[  601.938012] Hardware name: LENOVO 43147PU/43147PU, BIOS 6MET92WW (1.52 ) 
09/26/2012
[  601.938018] RIP: 0010:__vunmap+0x263/0x280
[  601.938022] Code: 01 00 74 a8 e8 1e ca 91 00 31 d2 31 f6 48 c7 c7 ff ff ff 
ff e8 ee cf ff ff eb 91 48 89 fe 48 c7 c7 98 a7 3c 84 e8 82 c5 df ff <0f> 0b eb 
86 4c 89 ee 48 c7 c7 c0 a7 3c 84 e8 6f c5 df ff 0f 0b e9
[  601.938025] RSP: 0018:ffffa7b907f838f8 EFLAGS: 00010282
[  601.938028] RAX: 0000000000000000 RBX: ffff98301adc1600 RCX: ffff983073d98cd8
[  601.938031] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff983073d98cd0
[  601.938033] RBP: ffffa7b907f83920 R08: 0000000000000004 R09: 00000000000004d7
[  601.938035] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000120
[  601.938040] R13: ffff9830721ca120 R14: 0000008c26dab5f9 R15: ffffa7b907f83a48
[  601.938044] FS:  00007f24237fe640(0000) GS:ffff983073d80000(0000) 
knlGS:0000000000000000
[  601.938046] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  601.938049] CR2: 0000333866fb1000 CR3: 000000022a948002 CR4: 00000000000206e0
[  601.938051] Call Trace:
[  601.938059]  vunmap+0x30/0x40
[  601.938182]  nvkm_umem_unmap+0x51/0x70 [nouveau]
[  601.938259]  nvkm_object_dtor+0x9f/0x110 [nouveau]
[  601.938347]  nvkm_object_del+0x25/0x90 [nouveau]
[  601.938423]  nvkm_ioctl_del+0x3c/0x60 [nouveau]
[  601.938497]  nvkm_ioctl+0xf0/0x190 [nouveau]
[  601.938623]  nvkm_client_ioctl+0x12/0x20 [nouveau]
[  601.938694]  nvif_object_ioctl+0x4e/0x60 [nouveau]
[  601.938777]  nvif_object_fini+0x5a/0x80 [nouveau]
[  601.938850]  nvif_mem_fini+0xe/0x10 [nouveau]
[  601.938967]  nouveau_mem_fini+0x57/0x70 [nouveau]
[  601.939091]  nouveau_mem_del+0x15/0x30 [nouveau]
[  601.939215]  nouveau_manager_del+0x11/0x20 [nouveau]
[  601.939231]  ttm_bo_cleanup_memtype_use+0x79/0x80 [ttm]
[  601.939242]  ttm_bo_release+0x198/0x380 [ttm]
[  601.939254]  ttm_bo_put+0x30/0x50 [ttm]
[  601.939375]  nouveau_gem_object_del+0x58/0x90 [nouveau]
[  601.939415]  drm_gem_object_free+0x41/0x70 [drm]
[  601.939453]  drm_gem_object_put_unlocked+0x76/0x80 [drm]
[  601.939491]  drm_gem_object_handle_put_unlocked+0x7e/0xb0 [drm]
[  601.939531]  drm_gem_object_release_handle+0x76/0xa0 [drm]
[  601.939563]  ? drm_gem_object_handle_put_unlocked+0xb0/0xb0 [drm]
[  601.939569]  idr_for_each+0x60/0xd0
[  601.939603]  drm_gem_release+0x21/0x30 [drm]
[  601.939639]  drm_file_free.part.0+0x15f/0x170 [drm]
[  601.939677]  drm_close_helper.isra.0+0x65/0x70 [drm]
[  601.939718]  drm_release+0x6a/0x110 [drm]
[  601.939724]  __fput+0xe9/0x250
[  601.939730]  ____fput+0xe/0x10
[  601.939734]  task_work_run+0x6d/0xa0
[  601.939739]  do_exit+0x200/0x440
[  601.939743]  do_group_exit+0x3b/0xb0
[  601.939749]  get_signal+0x174/0x630
[  601.939755]  do_signal+0x2f/0x1d0
[  601.939762]  exit_to_usermode_loop+0x8e/0x120
[  601.939767]  __prepare_exit_to_usermode+0xa2/0xe0
[  601.939772]  __syscall_return_slowpath+0x31/0x160
[  601.939779]  do_syscall_64+0x56/0xc0
[  601.939784]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  601.939788] RIP: 0033:0x7f24a4c3e48f
[  601.939790] Code: Bad RIP value.
[  601.939792] RSP: 002b:00007f24237fd560 EFLAGS: 00000293 ORIG_RAX: 
0000000000000007
[  601.939797] RAX: fffffffffffffdfc RBX: 00007f2438026f70 RCX: 00007f24a4c3e48f
[  601.939799] RDX: 00000000ffffffff RSI: 0000000000000003 RDI: 00007f24180114f0
[  601.939802] RBP: 00007f24380078b0 R08: 0000000000000000 R09: 00000000ffffffff
[  601.939805] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f24180114f0
[  601.939807] R13: 0000000000000003 R14: 00000000ffffffff R15: 00007f24237fe640
[  601.939813] ---[ end trace 948e5fa1b6518eb9 ]---
[  617.475475] ------------[ cut here ]------------
[  617.475480] Trying to vfree() bad address (00000000e0abe6c0)
[  617.475500] WARNING: CPU: 1 PID: 2496 at mm/vmalloc.c:2281 
__vunmap+0x263/0x280
[  617.475501] Modules linked in: rfcomm ccm cmac algif_hash algif_skcipher 
af_alg bnep lz4 zram zfs(PO) zunicode(PO) zavl(PO) icp(PO) zcommon(PO) 
znvpair(PO) spl(O) zlua(PO) intel_powerclamp coretemp kvm_intel kvm uvcvideo 
joydev input_leds intel_cstate serio_raw iwlmvm snd_hda_codec_conexant 
snd_hda_codec_hdmi snd_hda_codec_generic at24 videobuf2_vmalloc mac80211 
wmi_bmof videobuf2_memops intel_ips videobuf2_v4l2 videobuf2_common libarc4 
snd_hda_intel videodev snd_intel_dspcfg thinkpad_acpi snd_hda_codec mc iwlwifi 
snd_seq_midi nvram ledtrig_audio snd_seq_midi_event btusb btrtl btbcm 
snd_hda_core btintel snd_rawmidi bluetooth cfg80211 snd_hwdep ecdh_generic ecc 
snd_pcm snd_seq snd_seq_device snd_timer mei_me mei snd soundcore mac_hid 
sch_fq_codel msr parport_pc ppdev lp parport ip_tables x_tables autofs4 btrfs 
blake2b_generic xor raid6_pq libcrc32c nouveau mxm_wmi i2c_algo_bit ttm 
drm_kms_helper crct10dif_pclmul crc32_pclmul syscopyarea sysfillrect 
ghash_clmulni_intel sysimgblt fb_sys_fops
[  617.475558]  cec rc_core aesni_intel crypto_simd cryptd ahci glue_helper 
psmouse drm libahci sdhci_pci i2c_i801 i2c_smbus lpc_ich cqhci firewire_ohci 
e1000e firewire_core sdhci crc_itu_t wmi video
[  617.475575] CPU: 1 PID: 2496 Comm: WRWorker#1 Tainted: P        W  O      
5.8.0-25-generic #26-Ubuntu
[  617.475577] Hardware name: LENOVO 43147PU/43147PU, BIOS 6MET92WW (1.52 ) 
09/26/2012
[  617.475580] RIP: 0010:__vunmap+0x263/0x280
[  617.475583] Code: 01 00 74 a8 e8 1e ca 91 00 31 d2 31 f6 48 c7 c7 ff ff ff 
ff e8 ee cf ff ff eb 91 48 89 fe 48 c7 c7 98 a7 3c 84 e8 82 c5 df ff <0f> 0b eb 
86 4c 89 ee 48 c7 c7 c0 a7 3c 84 e8 6f c5 df ff 0f 0b e9
[  617.475585] RSP: 0018:ffffa7b906e178f8 EFLAGS: 00010282
[  617.475586] RAX: 0000000000000000 RBX: ffff98301adc1a80 RCX: ffff983073c98cd8
[  617.475588] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff983073c98cd0
[  617.475589] RBP: ffffa7b906e17920 R08: 0000000000000004 R09: 000000000000051a
[  617.475590] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000000008a0
[  617.475591] R13: ffff9830646288a0 R14: 0000008fc4fa8171 R15: ffffa7b906e17a48
[  617.475594] FS:  00007fdbc8ffe640(0000) GS:ffff983073c80000(0000) 
knlGS:0000000000000000
[  617.475595] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  617.475596] CR2: 00007fdb95ffe910 CR3: 000000015d80a006 CR4: 00000000000206e0
[  617.475598] Call Trace:
[  617.475604]  vunmap+0x30/0x40
[  617.475702]  nvkm_umem_unmap+0x51/0x70 [nouveau]
[  617.475749]  nvkm_object_dtor+0x9f/0x110 [nouveau]
[  617.475795]  nvkm_object_del+0x25/0x90 [nouveau]
[  617.475839]  nvkm_ioctl_del+0x3c/0x60 [nouveau]
[  617.475885]  nvkm_ioctl+0xf0/0x190 [nouveau]
[  617.475948]  nvkm_client_ioctl+0x12/0x20 [nouveau]
[  617.475992]  nvif_object_ioctl+0x4e/0x60 [nouveau]
[  617.476036]  nvif_object_fini+0x5a/0x80 [nouveau]
[  617.476079]  nvif_mem_fini+0xe/0x10 [nouveau]
[  617.476142]  nouveau_mem_fini+0x57/0x70 [nouveau]
[  617.476206]  nouveau_mem_del+0x15/0x30 [nouveau]
[  617.476271]  nouveau_manager_del+0x11/0x20 [nouveau]
[  617.476282]  ttm_bo_cleanup_memtype_use+0x79/0x80 [ttm]
[  617.476288]  ttm_bo_release+0x198/0x380 [ttm]
[  617.476294]  ttm_bo_put+0x30/0x50 [ttm]
[  617.476354]  nouveau_gem_object_del+0x58/0x90 [nouveau]
[  617.476398]  drm_gem_object_free+0x41/0x70 [drm]
[  617.476418]  drm_gem_object_put_unlocked+0x76/0x80 [drm]
[  617.476437]  drm_gem_object_handle_put_unlocked+0x7e/0xb0 [drm]
[  617.476456]  drm_gem_object_release_handle+0x76/0xa0 [drm]
[  617.476475]  ? drm_gem_object_handle_put_unlocked+0xb0/0xb0 [drm]
[  617.476479]  idr_for_each+0x60/0xd0
[  617.476499]  drm_gem_release+0x21/0x30 [drm]
[  617.476517]  drm_file_free.part.0+0x15f/0x170 [drm]
[  617.476536]  drm_close_helper.isra.0+0x65/0x70 [drm]
[  617.476555]  drm_release+0x6a/0x110 [drm]
[  617.476558]  __fput+0xe9/0x250
[  617.476561]  ____fput+0xe/0x10
[  617.476564]  task_work_run+0x6d/0xa0
[  617.476567]  do_exit+0x200/0x440
[  617.476569]  do_group_exit+0x3b/0xb0
[  617.476572]  get_signal+0x174/0x630
[  617.476576]  ? record_times+0x1b/0x90
[  617.476579]  do_signal+0x2f/0x1d0
[  617.476584]  exit_to_usermode_loop+0x8e/0x120
[  617.476587]  __prepare_exit_to_usermode+0xa2/0xe0
[  617.476589]  __syscall_return_slowpath+0x31/0x160
[  617.476593]  do_syscall_64+0x56/0xc0
[  617.476596]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  617.476599] RIP: 0033:0x7fdbe64f9c06
[  617.476600] Code: Bad RIP value.
[  617.476601] RSP: 002b:00007fdbc8ffd930 EFLAGS: 00000282 ORIG_RAX: 
00000000000000ca
[  617.476604] RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 00007fdbe64f9c06
[  617.476605] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fdbd27f5cf8
[  617.476606] RBP: 00007fdbd27f5cd0 R08: 0000000000000000 R09: 0000000000000000
[  617.476607] R10: 0000000000000000 R11: 0000000000000282 R12: 00007fdbd27f5cf4
[  617.476608] R13: 00007fdbd27f5c40 R14: 00007fdbc8ffd970 R15: 00007fdbd27f5cf8
[  617.476612] ---[ end trace 948e5fa1b6518eba ]---

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: linux-image-5.8.0-25-generic 5.8.0-25.26
ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
Uname: Linux 5.8.0-25-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu55
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  asif       1592 F.... pulseaudio
 /dev/snd/controlC1:  asif       1592 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: GNOME
Date: Tue Dec  8 19:54:01 2020
MachineType: LENOVO 43147PU
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 nouveaudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.8.0-25-generic 
root=UUID=a8bef705-98f8-4001-9e40-ca6bcb93583c ro rootflags=subvol=@ quiet 
splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.8.0-25-generic N/A
 linux-backports-modules-5.8.0-25-generic  N/A
 linux-firmware                            1.192
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/26/2012
dmi.bios.release: 1.82
dmi.bios.vendor: LENOVO
dmi.bios.version: 6MET92WW (1.52 )
dmi.board.name: 43147PU
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.ec.firmware.release: 1.33
dmi.modalias: 
dmi:bvnLENOVO:bvr6MET92WW(1.52):bd09/26/2012:br1.82:efr1.33:svnLENOVO:pn43147PU:pvrThinkPadT510:rvnLENOVO:rn43147PU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.family: ThinkPad T510
dmi.product.name: 43147PU
dmi.product.version: ThinkPad T510
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug hirsute

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https://bugs.launchpad.net/bugs/1907318

Title:
  GNOME lockups in nouveau

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