On Fri, Nov 03, 2023 at 09:07:32PM +0530, Naresh Kamboju wrote:
> Following warnings and errors have been noticed while building i386 build
> on stable-rc linux.4.19.y and linux.4.14.y.
>
> Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
>
> Build log:
> ==========
> kernel/profile.c: In function 'profile_dead_cpu':
> kernel/profile.c:346:27: warning: the comparison will always evaluate
> as 'true' for the address of 'prof_cpu_mask' will never be NULL
> [-Waddress]
> 346 | if (prof_cpu_mask != NULL)
> | ^~
> kernel/profile.c:49:22: note: 'prof_cpu_mask' declared here
> 49 | static cpumask_var_t prof_cpu_mask;
> | ^~~~~~~~~~~~~
> kernel/profile.c: In function 'profile_online_cpu':
> kernel/profile.c:383:27: warning: the comparison will always evaluate
> as 'true' for the address of 'prof_cpu_mask' will never be NULL
> [-Waddress]
> 383 | if (prof_cpu_mask != NULL)
> | ^~
> kernel/profile.c:49:22: note: 'prof_cpu_mask' declared here
> 49 | static cpumask_var_t prof_cpu_mask;
> | ^~~~~~~~~~~~~
> kernel/profile.c: In function 'profile_tick':
> kernel/profile.c:413:47: warning: the comparison will always evaluate
> as 'true' for the address of 'prof_cpu_mask' will never be NULL
> [-Waddress]
> 413 | if (!user_mode(regs) && prof_cpu_mask != NULL &&
> | ^~
> kernel/profile.c:49:22: note: 'prof_cpu_mask' declared here
> 49 | static cpumask_var_t prof_cpu_mask;
> | ^~~~~~~~~~~~~
Those are not due to this set of patches, right?
> arch/x86/kernel/head_32.S: Assembler messages:
> arch/x86/kernel/head_32.S:126: Error: invalid character '(' in mnemonic
> arch/x86/kernel/head_32.S:57: Info: macro invoked from here
> arch/x86/kernel/head_32.S:128: Error: invalid character '(' in mnemonic
> arch/x86/kernel/head_32.S:57: Info: macro invoked from here
This is odd, nothing touches this file either.
7e09ac27f43b ("x86: Fix .brk attribute in linker script") is backported
here, perhaps that is the issue? If you revert that, does the error go
away?
Let me see if I can build a 32 bit kernel anymore...
thanks,
greg k-h
