Re: [REGRESSION] mainline/master: (build) variable 'old_size' is uninitialized when used here [-Werror,-Wuni...

On 5/18/26 21:59, KernelCI bot wrote:
> 
> 
> 
> 
> Hello,
> 
> New build issue found on mainline/master:
> 
> ---
>  variable 'old_size' is uninitialized when used here [-Werror,-Wuninitialized] in fs/smb/client/cifsfs.o (fs/smb/client/cifsfs.c) [logspec:kbuild,kbuild.compiler.error]
> ---

I guess this is fixed by
https://git.kernel.org/torvalds/c/8cf8b5ae8e093132b0dce0a932af10c9ef077936
in mainline

> - dashboard: https://d.kernelci.org/i/maestro:8fef554699226f88449edfc56be31812d3edd327
> - giturl: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> - commit HEAD:  4bf5d3da79c48e1df4bab82c9680c53adeff7820
> 
> 
> Please include the KernelCI tag when submitting a fix:
> 
> Reported-by: kernelci.org bot <[email protected]>
> 
> 
> Log excerpt:
> =====================================================
> /tmp/kci/linux/fs/smb/client/cifsfs.c:1390:29: error: variable 'old_size' is uninitialized when used here [-Werror,-Wuninitialized]
>  1390 |                 if (rc == 0 && new_size > old_size) {
>       |                                           ^~~~~~~~
> /tmp/kci/linux/fs/smb/client/cifsfs.c:1307:37: note: initialize the variable 'old_size' to silence this warning
>  1307 |         unsigned long long i_size, old_size, new_size, zero_point;
>       |                                            ^
>       |                                             = 0
> /tmp/kci/linux/fs/smb/client/cifsfs.c:1375:13: error: variable 'zero_point' is uninitialized when used here [-Werror,-Wuninitialized]
>  1375 |         if (fend > zero_point)
>       |                    ^~~~~~~~~~
> /tmp/kci/linux/fs/smb/client/cifsfs.c:1307:59: note: initialize the variable 'zero_point' to silence this warning
>  1307 |         unsigned long long i_size, old_size, new_size, zero_point;
>       |                                                                  ^
>       |                                                                   = 0
> 2 errors generated.
> 
> =====================================================
> 
> 
> # Builds where the incident occurred:
> 
> ## defconfig+allmodconfig+CONFIG_FRAME_WARN=2048 on (arm):
> - compiler: clang-21
> - config: None
> - dashboard: https://d.kernelci.org/build/maestro:6a0b542b744d1c1da0198902
> 
> 
> #kernelci issue maestro:8fef554699226f88449edfc56be31812d3edd327
> 
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