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SubjectRe: [PATCH] x86: vdso: fix printf() format warnings in vdso2c.h
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On 2/12/21 2:56 AM, Jarkko Sakkinen wrote:
> On Mon, Feb 08, 2021 at 05:23:05PM -0800, Randy Dunlap wrote:
>> Use %zu instead of %lu for size_t to prevent w printf()
>> format warnings in vdso2c.h
>>
>> HOSTCC arch/x86/entry/vdso/vdso2c
>> In file included from ../arch/x86/entry/vdso/vdso2c.c:162:
>> ../arch/x86/entry/vdso/vdso2c.h: In function 'extract64':
>> ../arch/x86/entry/vdso/vdso2c.h:38:52: warning: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'size_t' {aka 'unsigned int'} [-Wformat=]
>> 38 | fprintf(outfile, "static const unsigned char %s[%lu] = {", name, len);
>> | ~~^ ~~~
>> In file included from ../arch/x86/entry/vdso/vdso2c.c:166:
>> ../arch/x86/entry/vdso/vdso2c.h: In function 'extract32':
>> ../arch/x86/entry/vdso/vdso2c.h:38:52: warning: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'size_t' {aka 'unsigned int'} [-Wformat=]
>> 38 | fprintf(outfile, "static const unsigned char %s[%lu] = {", name, len);
>> | ~~^ ~~~
>>
>> Fixes: 8382c668ce4f ("x86/vdso: Add support for exception fixup in vDSO functions")
>> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
>> Cc: Sean Christopherson <seanjc@google.com>
>> Cc: Jarkko Sakkinen <jarkko@kernel.org>
>> Cc: Borislav Petkov <bp@suse.de>
>> Cc: x86@kernel.org
>
> Just a *question*: should SOB be the last? Seeing this 2nd time today, and
> just not used to it. That's why asking.

I'll have to let someone else answer that. AFAICT, it's not documented.

I have read (in email) that when adding Acked-by, Tested-by, Reviewed-by, etc.,
that those should be added at the end of the list in chronological
order, but that doesn't tell us where to put the Cc: list.


> Anyway, thank you.
>
> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>

Thanks. Added at the end of the list. :)


>> ---
>> arch/x86/entry/vdso/vdso2c.h | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> --- lnx-511-rc7.orig/arch/x86/entry/vdso/vdso2c.h
>> +++ lnx-511-rc7/arch/x86/entry/vdso/vdso2c.h
>> @@ -35,7 +35,7 @@ static void BITSFUNC(extract)(const unsi
>> if (offset + len > data_len)
>> fail("section to extract overruns input data");
>>
>> - fprintf(outfile, "static const unsigned char %s[%lu] = {", name, len);
>> + fprintf(outfile, "static const unsigned char %s[%zu] = {", name, len);
>> BITSFUNC(copy)(outfile, data + offset, len);
>> fprintf(outfile, "\n};\n\n");
>> }
>>
>
> /Jarkko
>


--
~Randy

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