https://bugzilla.kernel.org/show_bug.cgi?id=210739 Bug ID: 210739 Summary: Regression in 5.10, Oops at amdgpu_connector_dp_detect() Product: Drivers Version: 2.5 Kernel Version: 5.10 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@xxxxxxxxxxxxxxxxxxxx Reporter: bugs-a17@xxxxxxxxxxxxxxxx Regression: Yes Created attachment 294169 --> https://bugzilla.kernel.org/attachment.cgi?id=294169&action=edit dmesg from where X11 initializes Booting into mainline 5.10.1 oopses in the amdgpu module in the routine amdgpu_connector_dp_detect(). Kernels 5.9.15 and below are not affected. Full dmesg attached. Brief snippet of oops: BUG: kernel NULL pointer dereference, address: 0000000000000060 Call Trace: amdgpu_connector_dp_detect+0x159/0x320 [amdgpu] drm_helper_probe_detect+0x93/0xd0 drm_helper_probe_single_connector_modes+0x60c/0x7e0 drm_client_modeset_probe+0x25c/0x13c0 [etc] The GPU is inbuilt within the AMD A10-7870K (Radeon R7). At system start: modprobe amdgpu clk_support=1 modprobe radeon clk_support=0 Console output seems to be OK during system initialization. But as soon as Xorg starts, the oops occurs, and video output ceases. System is still responsive via the network. The oops locks the video hardware spectacularly. Neither the BIOS nor pressing the motherboard <reset> button has any effect. Only a power-cycle will get things back to normal. -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
