Re: selftests/filesystem: clang warning null passed to a callee that requires a non-null argument [-Wnonnull]

[Dan Carpenter <dan.carpenter@linaro.org>]

This seems like a Clang bug, right?  The test for _Nullable is reversed
or something?

regards,
dan carpenter

On Thu, Jun 05, 2025 at 05:41:01PM +0530, Naresh Kamboju wrote:
> Regressions found on arm, arm64 and x86_64 building warnings with clang-20
> and clang-nightly started from Linux next-20250603
> 
> Regressions found on arm, arm64 and x86_64
>  - selftests/filesystem
> 
> Regression Analysis:
>  - New regression? Yes
>  - Reproducible? Yes
> 
> First seen on the next-20250603
> Good: next-20250530
> Bad:  next-20250603
> 
> Test regression: arm arm64 x86_64 clang warning null passed to a
> callee that requires a non-null argument [-Wnonnull]
> 
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> 
> ## Build warnings
> make[4]: Entering directory '/builds/linux/tools/testing/selftests/filesystems'
>   CC       devpts_pts
>   CC       file_stressor
>   CC       anon_inode_test
> anon_inode_test.c:45:37: warning: null passed to a callee that
> requires a non-null argument [-Wnonnull]
>    45 |         ASSERT_LT(execveat(fd_context, "", NULL, NULL,
> AT_EMPTY_PATH), 0);
>       |                                            ^~~~
> 
> ## Source
> * Kernel version: 6.15.0-next-20250605
> * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git
> * Git sha: a0bea9e39035edc56a994630e6048c8a191a99d8
> * Toolchain: Debian clang version 21.0.0
> (++20250529012636+c474f8f2404d-1~exp1~20250529132821.1479)
> 
> ## Build
> * Test log: https://qa-reports.linaro.org/api/testruns/28651387/log_file/
> * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/2xzM4wMl8SvuLKE3mw3csiuv3Jz/
> * Kernel config:
> https://storage.tuxsuite.com/public/linaro/lkft/builds/2xzM4wMl8SvuLKE3mw3csiuv3Jz/config
> 
> --
> Linaro LKFT
> https://lkft.linaro.org