For some nontrivial stap scripts compiled with Fedora 36's 6.1 and 6.2 kernels, the kernel build system trows out the following compilation errors: ``` In file included from /opt/stap-plus/share/systemtap/runtime/linux/runtime.h:301, from /opt/stap-plus/share/systemtap/runtime/runtime.h:26, from /tmp/stapzRqxL5/stap_61c4c192c40cf6ad899afb44bb419d45_1848_src.c:17: /opt/stap-plus/share/systemtap/runtime/sym.c: In function ‘_stp_usermodule_check’: /opt/stap-plus/share/systemtap/runtime/sym.c:983:1: error: the frame size of 2056 bytes is larger than 2048 bytes [-Werror=frame-larger-than=] 983 | } | ^ cc1: all warnings being treated as errors make[1]: *** [scripts/Makefile.build:250: /tmp/stapzRqxL5/stap_61c4c192c40cf6ad899afb44bb419d45_1848_src.o] Error 1 make: *** [Makefile:2016: /tmp/stapzRqxL5] Error 2 WARNING: kbuild exited with status: 2 Pass 4: compilation failed. [man error::pass4] ``` An unused C array is allocated on the stack, which triggers this error. I'll prepare a patch to fix this.
I'd propose this patch to fix this issue: https://gist.github.com/agentzh/b171be912307c1a63bd2c5374f3698ed
The proposed fix to remove the large unused array has been checked into systemtap. Can this PR be closed now?
This appears to addressed with the removal of the unused array in the _stp_usermodule_check function.