All machines: GEM tests - dmesg-warn/fail/incomplete - BUG: kernel NULL pointer dereference, address: 0000000000000044
<1> [219.555660] BUG: kernel NULL pointer dereference, address: 0000000000000044
<1> [219.555742] #PF: supervisor read access in kernel mode
<1> [219.555798] #PF: error_code(0x0000) - not-present page
<6> [219.555852] PGD 0 P4D 0
<4> [219.555899] Oops: 0000 [#1] PREEMPT SMP PTI
<4> [219.555955] CPU: 3 PID: 1080 Comm: gem_ctx_shared Tainted: G U 5.6.0-rc6-CI-CI_DRM_8151+ #1
<4> [219.556045] Hardware name: Google Caroline/Caroline, BIOS MrChromebox 08/27/2018
<4> [219.556134] RIP: 0010:drm_mode_config_validate+0x2a/0x1e0
<4> [219.556195] Code: 48 8b 8f 58 07 00 00 48 8d 97 58 07 00 00 48 39 ca 0f 84 c3 01 00 00 41 57 48 8d 41 f8 41 56 41 55 41 54 be 01 00 00 00 55 53 <8b> 48 4c 85 c9 75 0a 8b 48 44 89 f3 d3 e3 89 58 4c 4c 8b 70 08 49
<4> [219.556352] RSP: 0018:ffffc90000673bb8 EFLAGS: 00010282
<4> [219.556410] RAX: fffffffffffffff8 RBX: ffff88817051c000 RCX: 0000000000000000
<4> [219.556480] RDX: ffff88817051c758 RSI: 0000000000000001 RDI: ffff88817051c000
<4> [219.556550] RBP: ffff88816bf70810 R08: ffff88817a0043c0 R09: 0000000000000001
<4> [219.556620] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffa03eb000
<4> [219.556688] R13: 0000000000000000 R14: ffff8881703b8f38 R15: ffffc90000673e88
<4> [219.556762] FS: 00007f5ade778e40(0000) GS:ffff88817ad80000(0000) knlGS:0000000000000000
<4> [219.556842] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [219.556905] CR2: 0000000000000044 CR3: 000000016eede004 CR4: 00000000003606e0
<4> [219.556973] Call Trace:
<4> [219.557031] drm_dev_register+0x109/0x1c0
<4> [219.557102] vgem_init+0xf5/0x1000 [vgem]
<4> [219.557174] ? 0xffffffffa03ee000
<4> [219.557222] do_one_initcall+0x58/0x300
<4> [219.557284] ? rcu_read_lock_sched_held+0x4d/0x80
<4> [219.557348] ? kmem_cache_alloc_trace+0x2a6/0x2d0
<4> [219.557415] do_init_module+0x56/0x1f2
<4> [219.557470] load_module+0x233d/0x2a30
<4> [219.557573] ? __do_sys_finit_module+0xe9/0x110
<4> [219.557627] __do_sys_finit_module+0xe9/0x110
<4> [219.557715] do_syscall_64+0x4f/0x220
<4> [219.557770] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [219.557828] RIP: 0033:0x7f5addbfe839
<4> [219.557878] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 1f f6 2c 00 f7 d8 64 89 01 48
<4> [219.558042] RSP: 002b:00007ffcb0188348 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
<4> [219.558126] RAX: ffffffffffffffda RBX: 00005607e8e4c060 RCX: 00007f5addbfe839
<4> [219.558196] RDX: 0000000000000000 RSI: 00007f5adce43145 RDI: 0000000000000007
<4> [219.558267] RBP: 00007f5adce43145 R08: 0000000000000000 R09: 0000000000002002
<4> [219.558337] R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000
<4> [219.558408] R13: 00005607e8e47c00 R14: 0000000000000020 R15: 0000000000000000
<4> [219.558506] Modules linked in: vgem(+) snd_hda_codec_hdmi x86_pkg_temp_thermal coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_intel snd_intel_dspcfg snd_hda_codec cdc_ether snd_hwdep usbnet btusb btrtl snd_hda_core btbcm btintel r8152 snd_pcm mii bluetooth ecdh_generic ecc i915 i2c_hid pinctrl_sunrisepoint pinctrl_intel intel_lpss_pci prime_numbers
<4> [219.558858] CR2: 0000000000000044
<4> [219.558908] ---[ end trace f1b8fe519c710b26 ]---
<4> [220.293127] RIP: 0010:drm_mode_config_validate+0x2a/0x1e0
<4> [220.293200] Code: 48 8b 8f 58 07 00 00 48 8d 97 58 07 00 00 48 39 ca 0f 84 c3 01 00 00 41 57 48 8d 41 f8 41 56 41 55 41 54 be 01 00 00 00 55 53 <8b> 48 4c 85 c9 75 0a 8b 48 44 89 f3 d3 e3 89 58 4c 4c 8b 70 08 49
<4> [220.293364] RSP: 0018:ffffc90000673bb8 EFLAGS: 00010282
<4> [220.293426] RAX: fffffffffffffff8 RBX: ffff88817051c000 RCX: 0000000000000000
<4> [220.293496] RDX: ffff88817051c758 RSI: 0000000000000001 RDI: ffff88817051c000
<4> [220.293567] RBP: ffff88816bf70810 R08: ffff88817a0043c0 R09: 0000000000000001
<4> [220.293637] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffa03eb000
<4> [220.293708] R13: 0000000000000000 R14: ffff8881703b8f38 R15: ffffc90000673e88
<4> [220.293782] FS: 00007f5ade778e40(0000) GS:ffff88817ad80000(0000) knlGS:0000000000000000
<4> [220.293865] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [220.293926] CR2: 0000000000000044 CR3: 000000016eede004 CR4: 00000000003606e0
<3> [220.294001] BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:38
<3> [220.294092] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 1080, name: gem_ctx_shared
<4> [220.294173] INFO: lockdep is turned off.
<4> [220.294220] irq event stamp: 54388
<4> [220.294278] hardirqs last enabled at (54387): [<ffffffff8125a06d>] __slab_alloc.isra.89.constprop.94+0x4d/0x70
<4> [220.294381] hardirqs last disabled at (54388): [<ffffffff81001d50>] trace_hardirqs_off_thunk+0x1a/0x1c
<4> [220.294481] softirqs last enabled at (54368): [<ffffffff81e00385>] __do_softirq+0x385/0x47f
<4> [220.294572] softirqs last disabled at (54357): [<ffffffff810bab5a>] irq_exit+0xba/0xc0
<4> [220.294660] CPU: 3 PID: 1080 Comm: gem_ctx_shared Tainted: G UD 5.6.0-rc6-CI-CI_DRM_8151+ #1
<4> [220.294753] Hardware name: Google Caroline/Caroline, BIOS MrChromebox 08/27/2018
<4> [220.294827] Call Trace:
<4> [220.294877] dump_stack+0x71/0x9b
<4> [220.294933] ___might_sleep+0x178/0x260
<4> [220.294996] exit_signals+0x2b/0x350
<4> [220.295051] do_exit+0xa3/0xd50
<4> [220.295127] rewind_stack_do_exit+0x17/0x20
<7> [220.382987] i915 0000:00:02.0: [drm:edp_panel_vdd_off_sync [i915]] Turning [ENCODER:94:DDI A] VDD off
<7> [220.383629] i915 0000:00:02.0: [drm:edp_panel_vdd_off_sync [i915]] PP_STATUS: 0x80000008 PP_CONTROL: 0x00000007
<7> [220.384299] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling DC off
<7> [220.384853] i915 0000:00:02.0: [drm:skl_enable_dc6 [i915]] Enabling DC6
<7> [220.385377] i915 0000:00:02.0: [drm:gen9_set_dc_state [i915]] Setting DC state from 00 to 02