[Bug 217764] New: nouveau: system hangs when changing pstate on GeForce GT 320M (NVAF (MCP89))

[bugzilla-daemon at kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=217764

            Bug ID: 217764
           Summary: nouveau: system hangs when changing pstate on GeForce
                    GT 320M (NVAF (MCP89))
           Product: Drivers
           Version: 2.5
          Hardware: i386
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: dswdev at outlook.com
        Regression: No

Created attachment 304780
  --> https://bugzilla.kernel.org/attachment.cgi?id=304780&action=edit
Crash log

System hangs after pstate is changed with /sys/kernel/debug/dri/0/pstate
interface to any option (like 0f). It hangs sometimes right after changing, and
sometimes after few moments. According to kernel log it seems it attempts to
divide by zero for some reason in gt215_clk_info
(drivers/gpu/drm/nouveau/nvkm/subdev/clk/gt215.c) and fails with divide by zero
interrupt which causes system to hang. It happens on MacbookPro7,1 (Macbook Pro
13 inch Mid 2010) with NVIDIA GeForce GT 320M on Fedora 38 with Linux version
6.4.7-200.fc38.x86_64.

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