最近，在刚启动时，我注意到我的整个 CPU 使用率达到 100%。使用 htop 快速浏览后，我看到 4 个 cc1 进程正在编译某些内容，但不知道是什么。因此，我在家里留了一个脚本，以便在再次发生此事件时捕获该进程的所有信息。
脚本：
#! /bin/bash
ps -eF | grep cc1
因此这种情况再次发生，我运行脚本得到：
root 15586 15584 76 54470 188180 3 08:38 pts/0 00:00:04 /usr/lib/gcc/x86_64->linux-gnu/9/cc1 -quiet -nostdinc -I ./arch/x86/include -I ./arch/x86/include/generated -I ./include -I >./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi -I ./include/uapi -I ./include/generated/uapi -I >./ubuntu/include -I /var/lib/dkms/nvidia/470.141.03/build/common/inc -I >/var/lib/dkms/nvidia/470.141.03/build -I /var/lib/dkms/nvidia/470.141.03/build/nvidia-uvm -imultiarch x86_64-linux-gnu -MD /var/lib/dkms/nvidia/470.141.03/build/nvidia-uvm/uvm_va_block.d -MQ >/var/lib/dkms/nvidia/470.141.03/build/nvidia-uvm/uvm_va_block.o -D __KERNEL__ -D CONFIG_X86_X32_ABI -D CC_USING_FENTRY -D __KERNEL__ -D MODULE -D NVRM -D >NV_VERSION_STRING="470.141.03" -D NV_UVM_ENABLE -D NV_SPECTRE_V2=0 -D NV_KERNEL_INTERFACE_LAYER -D NVIDIA_UVM_ENABLED -D NVIDIA_UNDEF_LEGACY_BIT_MACROS -D Linux -D __linux__ -D MODULE -D KBUILD_BASENAME="uvm_va_block" -D >KBUILD_MODNAME="nvidia_uvm" -D __KBUILD_MODNAME=kmod_nvidia_uvm -isystem /usr/lib/gcc/x86_64-linux-gnu/9/include -include ./include/linux/compiler->version.h -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -MMD /var/lib/dkms/nvidia/470.141.03/build/nvidia-uvm/.uvm_va_block.o.d >/var/lib/dkms/nvidia/470.141.03/build/nvidia-uvm/uvm_va_block.c -quiet -dumpbase uvm_va_block.c -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -m64 ->mno-80387 -mno-fp-ret-in-387 -mpreferred-stack-boundary=3 -mskip-rax-setup -mtune=generic -mno->red-zone -mcmodel=kernel -mindirect-branch=thunk-extern -mindirect-branch-register -mfunction-return=thunk-extern >-mrecord-mcount -mfentry -mno-red-zone -mcmodel=kernel -march=x86-64 -auxbase-strip >/var/lib/dkms/nvidia/470.141.03/build/nvidia-uvm/uvm_va_block.o -g -O2 -O2 -Wundef -Werror=strict-prototypes -Wno-trigraphs -Werror=implicit-function->declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -Wno-sign-compare -Wno-frame-address -Wformat->truncation=0 -Wformat-overflow=0 -Wno-address-of-packed-member -Wframe-larger-than=1024 -Wimplicit-fallthrough=5 -Wno->main -Wno-unused-but-set-variable -Wunused-const-variable=0 -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wno->stringop-truncation -Wno-array-bounds -Wstringop-overflow=0 -Wno-restrict -Wno-maybe-uninitialized -Werror=date-time ->Werror=incompatible-pointer-types -Werror=designated-init -Wno-packed-not-aligned -Wall -Wno-cast-qual -Wno-error -Wno->format-extra-args -Wno-unused-function -Wuninitialized -Werror=undef -std=gnu90 -p -fmacro-prefix-map=./= -fno-common -fshort->wchar -fno-PIE -fcf-protection=none -falign-jumps=1 -falign-loops=1 -fno-asynchronous-unwind-tables -fno-jump-tables -fno->delete-null-pointer-checks -fstack-protector-strong -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-strict-overflow -fstack->check=no -fconserve-stack -fno-strict-aliasing -fno-stack-clash-protection -fcf-protection=none -fsanitize=bounds -fsanitize=shift ->fsanitize=bool -fsanitize=enum --param allow-store-data-races=0 -fstack-protector-strong -o /tmp/ccMIQJjy.s
这表明 NVIDIA 的一个内核模块正在编译中，更具体地说kmod_nvidia_uvm。目前这种情况发生在我身上多次，我不知道为什么这种情况发生得如此频繁（我认为每次重启一次）。如果有人有关于此事的任何信息，我将不胜感激。
编辑：
评论建议添加dkms status输出：
nvidia, 470.141.03, 5.15.0-43-generic, x86_64: installed nvidia, 470.141.03, 5.15.0-46-generic, x86_64: installed v4l2loopback, 0.12.3, 5.15.0-43-generic, x86_64: installed v4l2loopback, 0.12.3, 5.15.0-46-generic, x86_64: installed virtualbox, 6.1.32, 5.15.0-43-generic, x86_64: installed virtualbox, 6.1.32, 5.15.0-46-generic, x86_64: installed
和tree /var/lib/dkms/输出（仅与 NVIDIA 相关）：
/var/lib/dkms/ ├── dkms_dbversion ├── nvidia │ ├── 470.141.03 │ │ ├── 5.15.0-43-generic │ │ │ └── x86_64 │ │ │ ├── log │ │ │ │ └── make.log │ │ │ └── module │ │ │ ├── nvidia-drm.ko │ │ │ ├── nvidia.ko │ │ │ ├── nvidia-modeset.ko │ │ │ ├── nvidia-peermem.ko │ │ │ └── nvidia-uvm.ko │ │ ├── 5.15.0-46-generic │ │ │ └── x86_64 │ │ │ ├── log │ │ │ │ └── make.log │ │ │ └── module │ │ │ ├── nvidia-drm.ko │ │ │ ├── nvidia.ko │ │ │ ├── nvidia-modeset.ko │ │ │ ├── nvidia-peermem.ko │ │ │ └── nvidia-uvm.ko │ │ └── source -> /usr/src/nvidia-470.141.03 │ ├── kernel-5.15.0-43-generic-x86_64 -> 470.141.03/5.15.0-43 >generic/x86_64 │ └── kernel-5.15.0-46-generic-x86_64 -> 470.141.03/5.15.0-46 >generic/x86_64
使用的内核：
Linux version 5.15.0-46-generic (buildd@lcy02-amd64-007) (gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #49~20.04.1-Ubuntu SMP Thu Aug 4 19:15:44 UTC 2022