On Thu, Jan 25, 2024 at 08:20:54PM +0000, ci_not...@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 <npo...@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
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