Failure to build dkms modules

[LethalManBoob]

DKMS make.log for corefreq-1.95.5.r0.g34efe5d for kernel 6.3.0-4-cachyos-lto (x86_64)

Thu Apr 27 06:45:45 BST 2023
make: Entering directory '/usr/src/corefreq-1.95.5.r0.g34efe5d'
clang   corefreqd.c corefreqm.c \
  -D CORE_COUNT=256 -D TASK_ORDER=5 -D MAX_FREQ_HZ=7125000000 -D UBENCH=0 -D DELAY_TSC=1 \
  -o corefreqd -lpthread -lm -lrt
clang   \
  corefreq-cli.c corefreq-ui.c corefreq-cli-rsc.c \
  corefreq-cli-json.c corefreq-cli-extra.c \
  -D CORE_COUNT=256 -D TASK_ORDER=5 -D MAX_FREQ_HZ=7125000000 -D UBENCH=0 -D DELAY_TSC=1  \
  -o corefreq-cli -lm -lrt
make -j1 -C /usr/lib/modules/6.3.0-4-cachyos-lto/build M=/var/lib/dkms/corefreq/1.95.5.r0.g34efe5d/build modules
make[1]: Entering directory '/usr/lib/modules/6.3.0-4-cachyos-lto/build'
make[1]: warning: -j1 forced in submake: resetting jobserver mode.
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: CachyOS - LLVM 15 BOLT clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
  You are using:           clang version 15.0.7
  CC [M]  /var/lib/dkms/corefreq/1.95.5.r0.g34efe5d/build/corefreqk.o
/var/lib/dkms/corefreq/1.95.5.r0.g34efe5d/build/corefreqk.c:22084:16: fatal error: cannot assign to non-static data member 'vm_flags' with const-qualified type 'const vm_flags_t' (aka 'const unsigned long')
        vma->vm_flags = VM_READ;
        ~~~~~~~~~~~~~ ^
./include/linux/mm_types.h:500:20: note: non-static data member 'vm_flags' declared const here
                const vm_flags_t vm_flags;
                ~~~~~~~~~~~~~~~~~^~~~~~~~
1 error generated.
make[2]: *** [scripts/Makefile.build:252: /var/lib/dkms/corefreq/1.95.5.r0.g34efe5d/build/corefreqk.o] Error 1
make[1]: *** [Makefile:2023: /var/lib/dkms/corefreq/1.95.5.r0.g34efe5d/build] Error 2
make[1]: Leaving directory '/usr/lib/modules/6.3.0-4-cachyos-lto/build'
make: *** [Makefile:86: all] Error 2
make: Leaving directory '/usr/src/corefreq-1.95.5.r0.g34efe5d'

[cyring]

Can you please try to build against the current master version ? This would be version 1.96.0

[cyring]

Also if compiling Linux Kernel and CoreFreq with clang/llvm, check for CONFIG_FORTIFY_SOURCE fixed in this post

[cyring]

1. Using linux-cachyos 6.3.0-5
   built with _makemenuconfig=y _use_llvm_lto=full makepkg -sfir
2. I have successfully compile CoreFreq 1.96.0
   with make CC='clang' LLVM=1 clean all
3. and run:
   

[LethalManBoob]

Good new is it works now but..

[LethalManBoob]

Also i seem to be unable to register the cpu idle driver but maybe i followed somthing wrong so if you can drop somthing here to help me that would be appreicated.

[cyring]

Does your kernel log (dmesg) show any crash ?

Can you validate Processor with CoreFreq + ArchLinux from Live-CD ? Please take a picture.

[cyring]

Do you still have an issue to start CoreFreq ?

[LethalManBoob]

Okay so i was delayed but ill post the dmesg tomorrow.

[LethalManBoob]

https://pastebin.com/raw/NHcvABS7

[LethalManBoob]

also the daemon wont start on its own. i have to manually allow it to start every time.
I was told it requires me to make a modprobe file that calls for corefreqk to run but thats all i know.

[cyring]

No sign of crash in log above.

Procedure to run CoreFreq

Right after booting, starts CoreFreq this way:

1. Go to the source directory where you have downloaded latest 1.96 version, and fully rebuild:

make clean all CC='clang' LLVM=1 ## for your CachyOS LTO setup

2. Load Driver as root

insmod ./corefreqk.ko
lsmod|grep corefreq ## you should see kernel module of CoreFreq 

3. Starts Daemon as root

./corefreq -d ## one thread per CPU is listed

4. Starts Client as a user

./corefreq-cli

Does it work ?

If not, please reboot to mainline Linux kernel, not CachyOS.
But simply build with gcc this time:

make clean all CC=gcc

Go back to step 2

[LethalManBoob]

rm -f corefreqd corefreq-cli
make -j1 -C /lib/modules/6.3.1-1-cachyos-eevdf-bore-lto/build M=/home/joseph/CoreFreq clean
clang  -Wall -Wfatal-errors -pthread -c corefreqd.c \
  -D CORE_COUNT=256 -D TASK_ORDER=5 -D MAX_FREQ_HZ=7125000000 -D UBENCH=0 -D DELAY_TSC=1 \
  -o corefreqd.o
clang  -Wall -Wfatal-errors -c corefreqm.c \
  -D CORE_COUNT=256 -D TASK_ORDER=5 -D MAX_FREQ_HZ=7125000000 -D UBENCH=0 -D DELAY_TSC=1 \
  -o corefreqm.o
clang  -Wall -Wfatal-errors corefreqd.c corefreqm.c \
  -D CORE_COUNT=256 -D TASK_ORDER=5 -D MAX_FREQ_HZ=7125000000 -D UBENCH=0 -D DELAY_TSC=1 \
  -o corefreqd -lpthread -lm -lrt
clang  -Wall -Wfatal-errors -c corefreq-cli.c \
  -D CORE_COUNT=256 -D TASK_ORDER=5 -D MAX_FREQ_HZ=7125000000 -D UBENCH=0 -D DELAY_TSC=1  \
  -o corefreq-cli.o
clang  -Wall -Wfatal-errors -c corefreq-ui.c \
  -D CORE_COUNT=256 -D TASK_ORDER=5 -D MAX_FREQ_HZ=7125000000 -D UBENCH=0 -D DELAY_TSC=1 \
  -o corefreq-ui.o
clang  -Wall -Wfatal-errors -c corefreq-cli-rsc.c \
  -D CORE_COUNT=256 -D TASK_ORDER=5 -D MAX_FREQ_HZ=7125000000 -D UBENCH=0 -D DELAY_TSC=1  \
  -o corefreq-cli-rsc.o
clang  -Wall -Wfatal-errors -c corefreq-cli-json.c \
  -D CORE_COUNT=256 -D TASK_ORDER=5 -D MAX_FREQ_HZ=7125000000 -D UBENCH=0 -D DELAY_TSC=1 \
  -o corefreq-cli-json.o
clang  -Wall -Wfatal-errors -c corefreq-cli-extra.c \
  -D CORE_COUNT=256 -D TASK_ORDER=5 -D MAX_FREQ_HZ=7125000000 -D UBENCH=0 -D DELAY_TSC=1 \
  -o corefreq-cli-extra.o
clang  -Wall -Wfatal-errors \
  corefreq-cli.c corefreq-ui.c corefreq-cli-rsc.c \
  corefreq-cli-json.c corefreq-cli-extra.c \
  -D CORE_COUNT=256 -D TASK_ORDER=5 -D MAX_FREQ_HZ=7125000000 -D UBENCH=0 -D DELAY_TSC=1  \
  -o corefreq-cli -lm -lrt
make -j1 -C /lib/modules/6.3.1-1-cachyos-eevdf-bore-lto/build M=/home/joseph/CoreFreq modules
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: CachyOS - LLVM 15 BOLT clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
  You are using:           clang version 15.0.7
  CC [M]  /home/joseph/CoreFreq/corefreqk.o
LLVM ERROR: Permission denied: ThinLTO: Can't get a temporary file

PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
 #0 0x00007f278b9ae15a (/usr/lib/libLLVM-15.so+0xdae15a)
 #1 0x00007f278b9ab1df llvm::sys::RunSignalHandlers() (/usr/lib/libLLVM-15.so+0xdab1df)
 #2 0x00007f278b9ab32d (/usr/lib/libLLVM-15.so+0xdab32d)
 #3 0x00007f278a43e690 (/usr/lib/libc.so.6+0x3e690)
 #4 0x00007f278a49900b pthread_kill (/usr/lib/libc.so.6+0x9900b)
 #5 0x00007f278a43e5e8 raise (/usr/lib/libc.so.6+0x3e5e8)
 #6 0x00007f278a4224f8 abort (/usr/lib/libc.so.6+0x224f8)
 #7 0x00007f278b6e3281 (/usr/lib/libLLVM-15.so+0xae3281)
 #8 0x00007f278b897e40 LLVMConsumeError (/usr/lib/libLLVM-15.so+0xc97e40)
 #9 0x00007f278d65efdf (/usr/lib/libLLVM-15.so+0x2a5efdf)
#10 0x00007f278d65f953 (/usr/lib/libLLVM-15.so+0x2a5f953)
#11 0x00007f278d66041a llvm::lto::thinBackend(llvm::lto::Config const&, unsigned int, std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>, llvm::Module&, llvm::ModuleSummaryIndex const&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>*, std::vector<unsigned char, std::allocator<unsigned char>> const&) (/usr/lib/libLLVM-15.so+0x2a6041a)
#12 0x00007f278d63b40b (/usr/lib/libLLVM-15.so+0x2a3b40b)
#13 0x00007f278d651570 (/usr/lib/libLLVM-15.so+0x2a51570)
#14 0x00007f278bf7c60a (/usr/lib/libLLVM-15.so+0x137c60a)
#15 0x00007f278b92052d llvm::ThreadPool::processTasks(llvm::ThreadPoolTaskGroup*) (/usr/lib/libLLVM-15.so+0xd2052d)
#16 0x00007f278b920f25 (/usr/lib/libLLVM-15.so+0xd20f25)
#17 0x00007f278a49708f (/usr/lib/libc.so.6+0x9708f)
#18 0x00007f278a5294b0 (/usr/lib/libc.so.6+0x1294b0)
make[2]: *** [scripts/Makefile.build:252: /home/joseph/CoreFreq/corefreqk.o] Error 134
make[2]: *** Deleting file '/home/joseph/CoreFreq/corefreqk.o'
make[1]: *** [Makefile:2023: /home/joseph/CoreFreq] Error 2
make: *** [Makefile:86: all] Error 2

[cyring]

Please see #435 (comment) how CachyOS is built

[LethalManBoob]

Look like a high change that lto now breaks it. the corefreq-cli works when build from source

[LethalManBoob]

okay so when i install from aur...

corefreq-ro-shm: 'No such file or directory' @ line 21331```