On Tue, Oct 17, 2023 at 03:57:06PM +0200, Greg Kroah-Hartman wrote: > Sure! Here's the output, good luck! > > $ make -C tools/perf > make: Entering directory '/home/gregkh/linux/stable/linux-5.15.y/tools/perf' > BUILD: Doing 'make -j20' parallel build > Warning: Kernel ABI header at 'tools/include/uapi/linux/const.h' differs from latest version at 'include/uapi/linux/const.h' > diff -u tools/include/uapi/linux/const.h include/uapi/linux/const.h > Warning: Kernel ABI header at 'tools/include/uapi/linux/in.h' differs from latest version at 'include/uapi/linux/in.h' > diff -u tools/include/uapi/linux/in.h include/uapi/linux/in.h > Warning: Kernel ABI header at 'tools/arch/x86/include/asm/disabled-features.h' differs from latest version at 'arch/x86/include/asm/disabled-features.h' > diff -u tools/arch/x86/include/asm/disabled-features.h arch/x86/include/asm/disabled-features.h > Warning: Kernel ABI header at 'tools/arch/x86/include/asm/required-features.h' differs from latest version at 'arch/x86/include/asm/required-features.h' > diff -u tools/arch/x86/include/asm/required-features.h arch/x86/include/asm/required-features.h > Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h' > diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h > Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h' > diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h > Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm64/include/uapi/asm/kvm.h' > diff -u tools/arch/arm64/include/uapi/asm/kvm.h arch/arm64/include/uapi/asm/kvm.h > Makefile.config:1036: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev > Makefile.config:1062: No alternatives command found, you need to set JDIR= to point to the root of your Java directory > tests/bpf.c: In function ‘epoll_pwait_loop’: > tests/bpf.c:36:17: error: argument 2 null where non-null expected [-Werror=nonnull] > 36 | epoll_pwait(-(i + 1), NULL, 0, 0, NULL); > | ^~~~~~~~~~~ > In file included from tests/bpf.c:5: > /usr/include/sys/epoll.h:134:12: note: in a call to function ‘epoll_pwait’ declared ‘nonnull’ > 134 | extern int epoll_pwait (int __epfd, struct epoll_event *__events, > | ^~~~~~~~~~~ <snip> Also, in Linus's tree, this works just fine on my system, but I get this same error above (and only this error), when building perf on 6.1.y, and on 6.5.y. The perl errors are not present there. thanks, greg k-h
