On Thu, Jan 25, 2024 at 08:20:54PM +0000, ci_notify@linaro.org wrote:

Dear contributor, our automatic CI has detected problems related to your patch(es). Please find some details below. If you have any questions, please follow up on linaro-toolchain@lists.linaro.org mailing list, Libera's #linaro-tcwg channel, or ping your favourite Linaro toolchain developer on the usual project channel.

We appreciate that it might be difficult to find the necessary logs or reproduce the issue locally. If you can't get what you need from our CI within minutes, let us know and we will be happy to help.

We track this report status in https://linaro.atlassian.net/browse/LLVM-1105 , please let us know if you are looking at the problem and/or when you have a fix.

In CI config tcwg_kernel/llvm-master-aarch64-stable-allyesconfig after:

| commit llvmorg-19-init-59-g90ba33099cbb | Author: Nikita Popov npopov@redhat.com | Date: Wed Jan 24 15:25:29 2024 +0100 | | [InstCombine] Canonicalize constant GEPs to i8 source element type (#68882) | | This patch canonicalizes getelementptr instructions with constant | indices to use the `i8` source element type. This makes it easier for | optimizations to recognize that two GEPs are identical, because they | don't need to see past many different ways to express the same offset. | | ... 14 lines of the commit log omitted.

Results changed to # reset_artifacts: -10 # build_abe binutils: -9 # build_kernel_llvm: -5 # build_abe qemu: -2 # linux_n_obj: 22291 # First few build errors in logs:

# 00:05:24 ./include/linux/fortify-string.h:493:4: error: call to '__write_overflow_field' declared with 'warning' attribute: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror,-Wattribute-warning] # 00:05:25 make[4]: *** [scripts/Makefile.build:243: net/xfrm/xfrm_user.o] Error 1 # 00:05:32 make[3]: *** [scripts/Makefile.build:480: net/xfrm] Error 2

This one is the new warning tied to the above LLVM change, I filed https://github.com/ClangBuiltLinux/linux/issues/1985 for that a little bit ago.

# 00:15:32 ./include/linux/fortify-string.h:493:4: error: call to '__write_overflow_field' declared with 'warning' attribute: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror,-Wattribute-warning] # 00:15:32 make[5]: *** [scripts/Makefile.build:243: fs/smb/client/cifsencrypt.o] Error 1

This one is https://github.com/ClangBuiltLinux/linux/issues/1966.

Cheers, Nathan