[Bug 213983] WARNING: CPU: 3 PID: 520 at drivers/gpu/drm/ttm/ttm_bo.c:409 ttm_bo_release+0x7a/0x803 [ttm]

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=213983

--- Comment #4 from Erhard F. (erhard_f at mailbox.org) ---
(In reply to Christian König from comment #3)
> Well what happens here is that a buffer object is released while it is
> pinned and TTM now warns about doing stuff like that.
> 
> The key point is we need to figure out why the buffer is pinned in the first
> place.
> 
> One possibility is that it is used for scanout and containing the displayed
> picture, but from the backtrace my guess is that the buffer is shared with a
> different device and pinned because of that.
> 
> Can we get an lspci output for the system?
No prob. Changed the CPU to an A10-8750B meanwhile but the other hardware is
the same as in the original report.

 # lspci 
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh)
I/O Memory Management Unit
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Kaveri [Radeon R7 Graphics] (rev d7)
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Kaveri HDMI/DP
Audio Controller
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Root Port
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Kaveri P2P Bridge for
GFX PCIe Port [1:0]
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Root Port
00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Root Port
00:03.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Root Port
00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Root Port
00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI
Controller (rev 09)
00:10.1 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI
Controller (rev 09)
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller
[AHCI mode] (rev 40)
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI
Controller (rev 11)
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI
Controller (rev 11)
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI
Controller (rev 11)
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI
Controller (rev 11)
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 16)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge (rev 40)
00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI
Controller (rev 11)
00:15.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge
(PCIE port 0)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models
30h-3fh) Processor Function 5
01:00.0 USB controller: ASMedia Technology Inc. ASM2142 USB 3.1 Host Controller
02:00.0 USB controller: ASMedia Technology Inc. ASM1143 USB 3.1 Host Controller
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411
PCI Express Gigabit Ethernet Controller (rev 11)
05:00.0 Non-Volatile memory controller: Sandisk Corp WD Black SN750 / PC SN730
NVMe SSD

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