linux-kernel - Re: [PATCH] x86_32: add support for 64 bit __get

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Date:	Thu, 10 Mar 2016 02:17:58 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Benjamin LaHaise <bcrl@...ck.org>
Cc:	kbuild-all@...org, Ingo Molnar <mingo@...hat.com>,
	Russell King <rmk@....linux.org.uk>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86_32: add support for 64 bit __get_user()

Hi Benjamin,

[auto build test ERROR on tip/x86/core]
[also build test ERROR on v4.5-rc7 next-20160309]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Benjamin-LaHaise/x86_32-add-support-for-64-bit-__get_user/20160310-012551
config: x86_64-alldefconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   fs/select.c: Assembler messages:
>> fs/select.c:710: Error: operand type mismatch for `movq'
>> fs/select.c:714: Error: incorrect register `%cx' used with `q' suffix
   fs/select.c:711: Error: operand type mismatch for `movq'
>> fs/select.c:715: Error: incorrect register `%si' used with `q' suffix
--
   fs/aio.c: Assembler messages:
>> fs/aio.c:1606: Error: operand type mismatch for `movq'
>> fs/aio.c:1610: Error: incorrect register `%si' used with `q' suffix

vim +710 fs/select.c

9f72949f David Woodhouse   2006-01-18  704  	size_t sigsetsize = 0;
9f72949f David Woodhouse   2006-01-18  705  	sigset_t __user *up = NULL;
9f72949f David Woodhouse   2006-01-18  706  
9f72949f David Woodhouse   2006-01-18  707  	if (sig) {
9f72949f David Woodhouse   2006-01-18  708  		if (!access_ok(VERIFY_READ, sig, sizeof(void *)+sizeof(size_t))
e110ab94 Al Viro           2006-02-01  709  		    || __get_user(up, (sigset_t __user * __user *)sig)
9f72949f David Woodhouse   2006-01-18 @710  		    || __get_user(sigsetsize,
e110ab94 Al Viro           2006-02-01  711  				(size_t __user *)(sig+sizeof(void *))))
9f72949f David Woodhouse   2006-01-18  712  			return -EFAULT;
9f72949f David Woodhouse   2006-01-18  713  	}
9f72949f David Woodhouse   2006-01-18 @714  
c9da9f21 Heiko Carstens    2009-01-14 @715  	return do_pselect(n, inp, outp, exp, tsp, up, sigsetsize);
9f72949f David Woodhouse   2006-01-18  716  }
9f72949f David Woodhouse   2006-01-18  717  
5d0e5283 Christoph Hellwig 2010-03-10  718  #ifdef __ARCH_WANT_SYS_OLD_SELECT

:::::: The code at line 710 was first introduced by commit
:::::: 9f72949f679df06021c9e43886c9191494fdb007 [PATCH] Add pselect/ppoll system call implementation

:::::: TO: David Woodhouse <dwmw2@...radead.org>
:::::: CC: Linus Torvalds <torvalds@...osdl.org>

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