In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: unmap and remove csa_va properly
Root PD BO should be reserved before unmap and remove a bo_va from VM otherwise lockdep will complain.
v2: check fpriv->csava is not NULL instead of amdgpumcbp (christian)
[14616.936827] WARNING: CPU: 6 PID: 1711 at drivers/gpu/drm/amd/amdgpu/amdgpuvm.c:1762 amdgpuvmbodel+0x399/0x3f0 [amdgpu] [14616.937096] Call Trace: [14616.937097] <TASK> [14616.937102] amdgpudriverpostclosekms+0x249/0x2f0 [amdgpu] [14616.937187] drmfilefree+0x1d6/0x300 [drm] [14616.937207] drmclosehelper.isra.0+0x62/0x70 [drm] [14616.937220] drmrelease+0x5e/0x100 [drm] [14616.937234] fput+0x9f/0x280 [14616.937239] fput+0xe/0x20 [14616.937241] taskworkrun+0x61/0x90 [14616.937246] exittousermodeprepare+0x215/0x220 [14616.937251] syscallexittousermode+0x2a/0x60 [14616.937254] dosyscall64+0x48/0x90 [14616.937257] entrySYSCALL64afterhwframe+0x63/0xcd