[Bug 197103] New: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 / IP: nouveau_fbcon_set_suspend_work+0x45/0xf0 [nouveau]

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=197103

            Bug ID: 197103
           Summary: BUG: unable to handle kernel NULL pointer dereference
                    at 0000000000000008 / IP:
                    nouveau_fbcon_set_suspend_work+0x45/0xf0 [nouveau]
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.14.0-0.rc2.git4.1.fc28.x86_64
          Hardware: All
                OS: Linux
              Tree: Fedora
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: i.gnatenko.brain at gmail.com
        Regression: Yes

Created attachment 258693
  --> https://bugzilla.kernel.org/attachment.cgi?id=258693&action=edit
journal

This is Lenovo ThinkPad W541 machine. 4.13.0 works fine, as far as I know, none
of 4.14 works..

BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
IP: nouveau_fbcon_set_suspend_work+0x45/0xf0 [nouveau]
PGD 0 P4D 0
Oops: 0000 [#1] SMP
Modules linked in: pcc_cpufreq(-) intel_cstate(+) intel_uncore intel_rapl_perf
iwlmvm(+) mac80211 joydev(+) wmi_bmof i2c_i801 iwlwifi btusb btrtl btbcm
btintel bluetooth lpc_ich uvcvideo cfg80211 videobuf2_vmalloc
snd_hda_codec_realtek videobuf2_memops videobuf2_v4l2 snd_hda_codec_hdmi(+)
videobuf2_core snd_hda_codec_generic videodev media snd_hda_intel snd_hda_codec
ecdh_generic snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm mei_me mei
snd_timer ie31200_edac shpchp thinkpad_acpi snd soundcore rfkill tpm_tis
fjes(-) tpm_tis_core tpm acpi_cpufreq(-) xfs libcrc32c dm_crypt nouveau i915
crct10dif_pclmul crc32_pclmul crc32c_intel mxm_wmi ghash_clmulni_intel ttm
e1000e i2c_algo_bit serio_raw drm_kms_helper sdhci_pci sdhci mmc_core drm ptp
pps_core wmi video
CPU: 4 PID: 35 Comm: kworker/4:0 Not tainted 4.14.0-0.rc2.git4.1.fc28.x86_64 #1
Hardware name: LENOVO 20EGS0R60R/20EGS0R60R, BIOS GNET81WW (2.29 ) 11/24/2016
Workqueue: events nouveau_fbcon_set_suspend_work [nouveau]
task: ffff9c8b6a50b4c0 task.stack: ffffbb5a81a28000
RIP: 0010:nouveau_fbcon_set_suspend_work+0x45/0xf0 [nouveau]
RSP: 0018:ffffbb5a81a2be28 EFLAGS: 00010286
RAX: ffff9c8b6212f000 RBX: ffff9c8b63a157f8 RCX: 0000000000000000
RDX: ffff9c8b63a14000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffbb5a81a2be30 R08: ffffbb5a81a2bf40 R09: ffffffff99e0b400
R10: 0000000000000001 R11: 0000000000000000 R12: ffff9c8b6d5dafc0
R13: ffff9c8b6d5df800 R14: ffff9c8b63a157f8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff9c8b6d400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 0000000467f4e005 CR4: 00000000001606e0
Call Trace:
 process_one_work+0x26b/0x6c0
 worker_thread+0x35/0x3b0
 kthread+0x171/0x190
 ? process_one_work+0x6c0/0x6c0
 ? kthread_create_on_node+0x70/0x70
 ret_from_fork+0x2a/0x40
Code: 8b bb f0 f9 ff ff be 01 00 00 00 e8 46 d6 c7 ff 48 8b 83 f0 e9 ff ff 48
8b 50 28 48 8b 82 e8 11 00 00 48 85 c0 74 1c 48 8b 48 38 <8b> 49 08 89 88 58 02
00 00 48 8b 82 e8 11 00 00 48 8b 40 38 83
RIP: nouveau_fbcon_set_suspend_work+0x45/0xf0 [nouveau] RSP: ffffbb5a81a2be28
CR2: 0000000000000008
---[ end trace 01aa0aae272659a2 ]---
BUG: sleeping function called from invalid context at
./include/linux/percpu-rwsem.h:33
in_atomic(): 0, irqs_disabled(): 1, pid: 35, name: kworker/4:0
INFO: lockdep is turned off.
irq event stamp: 9496
hardirqs last  enabled at (9495): [<ffffffff999d5726>]
_raw_spin_unlock_irqrestore+0x36/0x60
hardirqs last disabled at (9496): [<ffffffff999d770c>] error_entry+0x7c/0xd0
softirqs last  enabled at (9428): [<ffffffff9913d4cc>]
srcu_invoke_callbacks+0xbc/0x190
softirqs last disabled at (9424): [<ffffffff9913d4cc>]
srcu_invoke_callbacks+0xbc/0x190
CPU: 4 PID: 35 Comm: kworker/4:0 Tainted: G      D        
4.14.0-0.rc2.git4.1.fc28.x86_64 #1
Hardware name: LENOVO 20EGS0R60R/20EGS0R60R, BIOS GNET81WW (2.29 ) 11/24/2016
Workqueue: events nouveau_fbcon_set_suspend_work [nouveau]
Call Trace:
 dump_stack+0x8e/0xd6
 ___might_sleep+0x164/0x250
 __might_sleep+0x4a/0x80
 exit_signals+0x33/0x240
 do_exit+0xb9/0xda0
 ? kthread+0x171/0x190
 rewind_stack_do_exit+0x17/0x20

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