linux-kernel - Re: [PATCH] signal/parics: Remove parsic specific definition of __ARCH_UAPI_SA

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Date:   Mon, 30 Nov 2020 11:15:14 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Peter Collingbourne <pcc@...gle.com>,
        Helge Deller <deller@....de>, linux-parisc@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>
Subject: Re: [PATCH] signal/parics: Remove parsic specific definition of
 __ARCH_UAPI_SA_FLAGS

On 11/30/20 9:30 AM, Eric W. Biederman wrote:
> 
> Randy Dunlap wrote:
>> On 11/27/20 10:43 AM, Randy Dunlap wrote:
>>
>>> on parisc, _SA_SIGGFAULT is undefined and causing build errors.
>>>
>>> commit 23acdc76f1798b090bb9dcc90671cd29d929834e
>>> Author: Peter Collingbourne <pcc@...gle.com>
>>> Date:   Thu Nov 12 18:53:34 2020 -0800
>>>
>>>     signal: clear non-uapi flag bits when passing/returning sa_flags
>>>
>>>
>>>
>>> _SA_SIGGFAULT is not used or defined anywhere else in the
>>> kernel source tree.
>>
>>
>> Here is the build error (although it should be obvious):
>>
>> ../kernel/signal.c: In function 'do_sigaction':
>> ../arch/parisc/include/asm/signal.h:24:30: error: '_SA_SIGGFAULT' undeclared (first use in this function)
>>    24 | #define __ARCH_UAPI_SA_FLAGS _SA_SIGGFAULT
>>       |                              ^~~~~~~~~~~~~
> 
> Stephen Rothwell pointed out:
>> _SA_SIGGFAULT was removed by commit
>>
>>   41f5a81c07cd ("parisc: Drop HP-UX specific fcntl and signal flags")
>>
>> which was added to Linus' tree in v5.10-rc1.
> 
> Solve this by removing the the parisc specific definition of
> __ARCH_UAPI_SA_FLAGS that was just added.
> 
> Reported-by: Randy Dunlap <rdunlap@...radead.org>
> Fixes: 23acdc76f179 ("signal: clear non-uapi flag bits when passing/returning sa_flags")
> Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>

Thanks, Eric.

Acked-by: Randy Dunlap <rdunlap@...radead.org> # build-tested


BTW, there are 2 typos for "parisc" in the Subject: line...


> ---
>  arch/parisc/include/asm/signal.h | 2 --
>  1 file changed, 2 deletions(-)
> 
> I am applying this trivial fix to my signal-for-v5.11 branch.  Catalin
> you shouldn't need to do anything unless someone tests your tree on
> parisc.
> 
> diff --git a/arch/parisc/include/asm/signal.h b/arch/parisc/include/asm/signal.h
> index 30dd1e43ef88..715c96ba2ec8 100644
> --- a/arch/parisc/include/asm/signal.h
> +++ b/arch/parisc/include/asm/signal.h
> @@ -21,8 +21,6 @@ typedef struct {
>  	unsigned long sig[_NSIG_WORDS];
>  } sigset_t;
>  
> -#define __ARCH_UAPI_SA_FLAGS	_SA_SIGGFAULT
> -
>  #include <asm/sigcontext.h>
>  
>  #endif /* !__ASSEMBLY */
> 


-- 
~Randy