Re: [PATCH 1/8] drm/atomic-helper: reset vblank on crtc reset

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As of commit 47ec5303d73ea344 ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next") on linux.git ,
my VMware environment cannot boot. Do I need to bisect?

[    9.314496][    T1] vga16fb: mapped to 0x0000000071050562
[    9.467770][    T1] Console: switching to colour frame buffer device 80x30
[    9.632092][    T1] fb0: VGA16 VGA frame buffer device
[    9.651768][    T1] ACPI: AC Adapter [ACAD] (on-line)
[    9.672544][    T1] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[    9.722373][    T1] ACPI: Power Button [PWRF]
[    9.744231][    T1] ioatdma: Intel(R) QuickData Technology Driver 5.00
[    9.820147][    T1] N_HDLC line discipline registered with maxframe=4096
[    9.835649][    T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    9.852567][    T1] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[   10.033372][    T1] Cyclades driver 2.6
[   10.049928][    T1] Initializing Nozomi driver 2.1d
[   10.065493][    T1] RocketPort device driver module, version 2.09, 12-June-2003
[   10.095368][    T1] No rocketport ports found; unloading driver
[   10.112430][    T1] Non-volatile memory driver v1.3
[   10.127090][    T1] Linux agpgart interface v0.103
[   10.144037][    T1] agpgart-intel 0000:00:00.0: Intel 440BX Chipset
[   10.162275][    T1] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0x0
[   10.181130][    T1] [drm] DMA map mode: Caching DMA mappings.
[   10.195150][    T1] [drm] Capabilities:
[   10.208728][    T1] [drm]   Rect copy.
[   10.222772][    T1] [drm]   Cursor.
[   10.235364][    T1] [drm]   Cursor bypass.
[   10.249121][    T1] [drm]   Cursor bypass 2.
[   10.260590][    T1] [drm]   8bit emulation.
[   10.272220][    T1] [drm]   Alpha cursor.
[   10.284670][    T1] [drm]   3D.
[   10.295051][    T1] [drm]   Extended Fifo.
[   10.305180][    T1] [drm]   Multimon.
[   10.315506][    T1] [drm]   Pitchlock.
[   10.325167][    T1] [drm]   Irq mask.
[   10.334262][    T1] [drm]   Display Topology.
[   10.343519][    T1] [drm]   GMR.
[   10.352775][    T1] [drm]   Traces.
[   10.362166][    T1] [drm]   GMR2.
[   10.370716][    T1] [drm]   Screen Object 2.
[   10.379220][    T1] [drm]   Command Buffers.
[   10.388489][    T1] [drm]   Command Buffers 2.
[   10.396055][    T1] [drm]   Guest Backed Resources.
[   10.403290][    T1] [drm]   DX Features.
[   10.409911][    T1] [drm]   HP Command Queue.
[   10.417820][    T1] [drm] Capabilities2:
[   10.424216][    T1] [drm]   Grow oTable.
[   10.430423][    T1] [drm]   IntraSurface copy.
[   10.436371][    T1] [drm] Max GMR ids is 64
[   10.442651][    T1] [drm] Max number of GMR pages is 65536
[   10.450317][    T1] [drm] Max dedicated hypervisor surface memory is 0 kiB
[   10.458809][    T1] [drm] Maximum display memory size is 262144 kiB
[   10.466330][    T1] [drm] VRAM at 0xe8000000 size is 4096 kiB
[   10.474704][    T1] [drm] MMIO at 0xfe000000 size is 256 kiB
[   10.484625][    T1] [TTM] Zone  kernel: Available graphics memory: 4030538 KiB
[   10.500730][    T1] [TTM] Zone   dma32: Available graphics memory: 2097152 KiB
[   10.516851][    T1] [TTM] Initializing pool allocator
[   10.527542][    T1] [TTM] Initializing DMA pool allocator
[   10.540197][    T1] BUG: kernel NULL pointer dereference, address: 0000000000000438
[   10.550087][    T1] #PF: supervisor read access in kernel mode
[   10.550087][    T1] #PF: error_code(0x0000) - not-present page
[   10.550087][    T1] PGD 0 P4D 0 
[   10.550087][    T1] Oops: 0000 [#1] PREEMPT SMP
[   10.550087][    T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.8.0+ #271
[   10.550087][    T1] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 02/27/2020
[   10.550087][    T1] RIP: 0010:drm_dev_has_vblank+0x9/0x20
[   10.550087][    T1] Code: 5d 41 5e 41 5f e9 e7 fa 01 ff e8 e2 fa 01 ff 45 31 e4 41 8b 5f 48 eb a7 cc cc cc cc cc cc cc cc cc 53 48 89 fb e8 c7 fa 01 ff <8b> 83 38 04 00 00 5b 85 c0 0f 95 c0 c3 66 2e 0f 1f 84 00 00 00 00
[   10.550087][    T1] RSP: 0000:ffffc90000027b80 EFLAGS: 00010293
[   10.550087][    T1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   10.550087][    T1] RDX: ffff88823544c040 RSI: ffffffff823265b9 RDI: 0000000000000000
[   10.550087][    T1] RBP: ffff888227238800 R08: 0000000000000001 R09: 0000000000000000
[   10.550087][    T1] R10: ffff888227238800 R11: 0000000000000001 R12: 0000000000000000
[   10.550087][    T1] R13: ffff888235103000 R14: 0000000000000000 R15: ffff888226cc6af0
[   10.850690][    T1] FS:  0000000000000000(0000) GS:ffff888236e00000(0000) knlGS:0000000000000000
[   10.850690][    T1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.850690][    T1] CR2: 0000000000000438 CR3: 0000000004a89001 CR4: 00000000003706f0
[   10.850690][    T1] Call Trace:
[   10.850690][    T1]  __drm_atomic_helper_crtc_reset+0x28/0x50
[   10.850690][    T1]  vmw_du_crtc_reset+0x62/0x80
[   10.850690][    T1]  vmw_kms_stdu_init_display+0x302/0x3f0
[   10.850690][    T1]  vmw_kms_init+0x6f/0xe0
[   10.850690][    T1]  vmw_probe+0xd52/0x1730
[   10.850690][    T1]  local_pci_probe+0x3a/0x90
[   10.850690][    T1]  pci_device_probe+0x163/0x230
[   10.850690][    T1]  ? pci_device_remove+0x100/0x100
[   10.850690][    T1]  really_probe+0x228/0x480
[   10.850690][    T1]  ? rdinit_setup+0x3b/0x3b
[   10.850690][    T1]  driver_probe_device+0x6c/0xe0
[   10.850690][    T1]  device_driver_attach+0x5a/0x60
[   10.850690][    T1]  __driver_attach+0xbd/0x100
[   10.850690][    T1]  ? device_driver_attach+0x60/0x60
[   10.850690][    T1]  bus_for_each_dev+0x9e/0x110
[   10.850690][    T1]  bus_add_driver+0x1c8/0x260
[   10.850690][    T1]  driver_register+0x96/0x160
[   10.850690][    T1]  ? i915_global_vma_init+0x51/0x51
[   11.202435][    T1]  vmwgfx_init+0x2e/0x4e
[   11.202435][    T1]  do_one_initcall+0x84/0x4a0
[   11.202435][    T1]  ? rdinit_setup+0x3b/0x3b
[   11.202435][    T1]  ? rcu_read_lock_sched_held+0x4d/0x80
[   11.202435][    T1]  ? cpumask_test_cpu.constprop.19+0x12/0x30
[   11.202435][    T1]  ? rdinit_setup+0x3b/0x3b
[   11.202435][    T1]  kernel_init_freeable+0x298/0x30c
[   11.202435][    T1]  ? rest_init+0x2c0/0x2c0
[   11.202435][    T1]  kernel_init+0xf/0x170
[   11.282173][    T1]  ? _raw_spin_unlock_irq+0x3a/0x50
[   11.282173][    T1]  ? rest_init+0x2c0/0x2c0
[   11.282173][    T1]  ret_from_fork+0x1f/0x30
[   11.282173][    T1] Modules linked in:
[   11.282173][    T1] CR2: 0000000000000438
[   11.282173][    T1] ---[ end trace fb560758d9d704d3 ]---
[   11.282173][    T1] RIP: 0010:drm_dev_has_vblank+0x9/0x20
[   11.282173][    T1] Code: 5d 41 5e 41 5f e9 e7 fa 01 ff e8 e2 fa 01 ff 45 31 e4 41 8b 5f 48 eb a7 cc cc cc cc cc cc cc cc cc 53 48 89 fb e8 c7 fa 01 ff <8b> 83 38 04 00 00 5b 85 c0 0f 95 c0 c3 66 2e 0f 1f 84 00 00 00 00
[   11.282173][    T1] RSP: 0000:ffffc90000027b80 EFLAGS: 00010293
[   11.282173][    T1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   11.282173][    T1] RDX: ffff88823544c040 RSI: ffffffff823265b9 RDI: 0000000000000000
[   11.282173][    T1] RBP: ffff888227238800 R08: 0000000000000001 R09: 0000000000000000
[   11.282173][    T1] R10: ffff888227238800 R11: 0000000000000001 R12: 0000000000000000
[   11.282173][    T1] R13: ffff888235103000 R14: 0000000000000000 R15: ffff888226cc6af0
[   11.282173][    T1] FS:  0000000000000000(0000) GS:ffff888236e00000(0000) knlGS:0000000000000000
[   11.282173][    T1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.282173][    T1] CR2: 0000000000000438 CR3: 0000000004a89001 CR4: 00000000003706f0
[   11.282173][    T1] Kernel panic - not syncing: Fatal exception
[   11.282173][    T1] Kernel Offset: disabled
[   11.282173][    T1] Rebooting in 86400 seconds..


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