Hi,
On Wed, Feb 24, 2016 at 11:32:15PM +0800, Drunkard Zhang wrote:
I may hit a bug, when enabled CONFIG_VGA_SWITCHEROO, run lspci command on MSI GS60-070XCN will stuck, it eats 100% CPU of one core, and CPU/memory allocation on this system fails sometimes.
Sounds like a deadlock. Does reverting 8f12a3118f55 ("vga_switcheroo: Add missing locking") help?
If not I'd suspect this to be caused by a codepath in nouveau which is only executed if CONFIG_VGA_SWITCHEROO is enabled. I believe Maxwell support is still somewhat limited. Does unloading or blacklisting nouveau help?
Best regards,
Lukas
I'll bisect later, put my enviroment here, hope you guys give me some hint :)
Tested kernel versions are: latest Linus' kernel code, 4.4.2-gentoo;
My hardware info:
23:25:37 ~ # lspci 00:00.0 Host bridge: Intel Corporation Sky Lake Host Bridge/DRAM Registers (rev 07) 00:01.0 PCI bridge: Intel Corporation Sky Lake PCIe Controller (x16) (rev 07) 00:02.0 VGA compatible controller: Intel Corporation Device 191b (rev 06) 00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31) 00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31) 00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31) 00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA Controller [AHCI mode] (rev 31) 00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1) 00:1c.2 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #3 (rev f1) 00:1c.3 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #4 (rev f1) 00:1c.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #5 (rev f1) 00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #9 (rev f1) 00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31) 00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31) 00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31) 00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31) 01:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 960M] (rev a2) 02:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 20) 03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5249 PCI Express Card Reader (rev 01) 04:00.0 Ethernet controller: Qualcomm Atheros Device e0a1 (rev 10) 05:00.0 PCI bridge: Intel Corporation Device 1576 06:00.0 PCI bridge: Intel Corporation Device 1576 06:01.0 PCI bridge: Intel Corporation Device 1576 06:02.0 PCI bridge: Intel Corporation Device 1576 07:00.0 System peripheral: Intel Corporation Device 1575 09:00.0 USB controller: Intel Corporation Device 15b5 3e:00.0 Non-Volatile memory controller: Toshiba America Info Systems Device 010f (rev 01)
Any other hints?