Control domain memory leak issue on Citrix Hypervisor 8.0 due to NVidia GPU driver.

NVidia GPU driver NVIDIA-vGPU-xenserver-8.0-430.46.x86_64 is causing memory leak on Citrix Hypervisor.

Memory leak call traces are available under kern.log.

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435441] vgpu invoked oom-killer: gfp_mask=0x6042c0(GFP_KERNEL|__GFP_NOWARN|__GFP_COMP), nodemask=(null), order=3, oom_score_adj=0

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435465] vgpu cpuset=/ mems_allowed=0

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435477] CPU: 2 PID: 1062 Comm: vgpu Tainted: P D W O 4.19.0+1 #1

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435496] Call Trace:

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435513] dump_stack+0x5a/0x73

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435525] dump_header+0x6e/0x28c

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435534] oom_kill_process+0x25a/0x280

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435540] ? oom_badness+0xde/0x130

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435547] out_of_memory+0x12f/0x2b0

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435556] __alloc_pages_slowpath+0x7c0/0xa09

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435566] __alloc_pages_nodemask+0x271/0x2b0

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435577] kmalloc_order+0x18/0x40

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435584] kmalloc_order_trace+0x24/0xa0

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435801] os_alloc_mem+0xd5/0xe0 [nvidia]

Nov 19 12:45:59 ***xenserver* kernel: [3085592.435989] ? _nv007822rm+0x23/0x30 [nvidia]

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