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From: kbuild test robot <lkp@intel.com>
To: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: kbuild-all@lists.01.org,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	airlied@linux.ie, daniel@ffwll.ch, torvalds@linux-foundation.org,
	viro@zeniv.linux.org.uk, akpm@linux-foundation.org,
	keescook@chromium.org, hpa@zytor.com,
	linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	linux-mm@kvack.org, linux-arch@vger.kernel.org,
	intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH v2 5/5] uaccess: Rename user_access_begin/end() to user_full_access_begin/end()
Date: Sat, 4 Apr 2020 14:20:47 +0800	[thread overview]
Message-ID: <202004041412.hmj3ieek%lkp@intel.com> (raw)
In-Reply-To: <42da416106d5c1cf92bda1e058434fe240b35f44.1585898438.git.christophe.leroy@c-s.fr>

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Hi Christophe,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on next-20200403]
[cannot apply to powerpc/next drm-intel/for-linux-next tip/x86/core v5.6]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Christophe-Leroy/uaccess-Add-user_read_access_begin-end-and-user_write_access_begin-end/20200404-080555
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5364abc57993b3bf60c41923cb98a8f1a594e749
config: x86_64-randconfig-s1-20200404 (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   arch/x86/ia32/ia32_signal.c: In function 'ia32_setup_frame':
>> arch/x86/ia32/ia32_signal.c:265:7: error: implicit declaration of function 'user_access_begin'; did you mean 'user_access_end'? [-Werror=implicit-function-declaration]
     if (!user_access_begin(frame, sizeof(*frame)))
          ^~~~~~~~~~~~~~~~~
          user_access_end
   cc1: some warnings being treated as errors

vim +265 arch/x86/ia32/ia32_signal.c

^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  233  
235b80226b986d arch/x86/ia32/ia32_signal.c    Al Viro             2012-11-09  234  int ia32_setup_frame(int sig, struct ksignal *ksig,
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  235  		     compat_sigset_t *set, struct pt_regs *regs)
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  236  {
3b0d29ee1c73b6 arch/x86/ia32/ia32_signal.c    Hiroshi Shimamoto   2008-12-17  237  	struct sigframe_ia32 __user *frame;
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  238  	void __user *restorer;
44a1d996325982 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  239  	void __user *fp = NULL;
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  240  
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  241  	/* copy_to_user optimizes that into a single 8 byte store */
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  242  	static const struct {
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  243  		u16 poplmovl;
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  244  		u32 val;
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  245  		u16 int80;
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  246  	} __attribute__((packed)) code = {
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  247  		0xb858,		 /* popl %eax ; movl $...,%eax */
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  248  		__NR_ia32_sigreturn,
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  249  		0x80cd,		/* int $0x80 */
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  250  	};
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  251  
44a1d996325982 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  252  	frame = get_sigframe(ksig, regs, sizeof(*frame), &fp);
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  253  
235b80226b986d arch/x86/ia32/ia32_signal.c    Al Viro             2012-11-09  254  	if (ksig->ka.sa.sa_flags & SA_RESTORER) {
235b80226b986d arch/x86/ia32/ia32_signal.c    Al Viro             2012-11-09  255  		restorer = ksig->ka.sa.sa_restorer;
af65d64845a90c arch/x86/ia32/ia32_signal.c    Roland McGrath      2008-01-30  256  	} else {
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  257  		/* Return stub is in 32bit vsyscall page */
1a3e4ca41c5a38 arch/x86/ia32/ia32_signal.c    Roland McGrath      2008-04-09  258  		if (current->mm->context.vdso)
6f121e548f8367 arch/x86/ia32/ia32_signal.c    Andy Lutomirski     2014-05-05  259  			restorer = current->mm->context.vdso +
0a6d1fa0d2b48f arch/x86/ia32/ia32_signal.c    Andy Lutomirski     2015-10-05  260  				vdso_image_32.sym___kernel_sigreturn;
9fbbd4dd17d071 arch/x86_64/ia32/ia32_signal.c Andi Kleen          2007-02-13  261  		else
ade1af77129dea arch/x86/ia32/ia32_signal.c    Jan Engelhardt      2008-01-30  262  			restorer = &frame->retcode;
af65d64845a90c arch/x86/ia32/ia32_signal.c    Roland McGrath      2008-01-30  263  	}
3b4b75700a245d arch/x86/ia32/ia32_signal.c    Hiroshi Shimamoto   2009-01-23  264  
e2390741053e49 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15 @265  	if (!user_access_begin(frame, sizeof(*frame)))
e2390741053e49 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  266  		return -EFAULT;
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  267  
e2390741053e49 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  268  	unsafe_put_user(sig, &frame->sig, Efault);
e2390741053e49 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  269  	unsafe_put_sigcontext32(&frame->sc, fp, regs, set, Efault);
e2390741053e49 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  270  	unsafe_put_user(set->sig[1], &frame->extramask[0], Efault);
e2390741053e49 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  271  	unsafe_put_user(ptr_to_compat(restorer), &frame->pretcode, Efault);
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  272  	/*
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  273  	 * These are actually not used anymore, but left because some
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  274  	 * gdb versions depend on them as a marker.
99b9cdf758af70 arch/x86/ia32/ia32_signal.c    Thomas Gleixner     2008-01-30  275  	 */
e2390741053e49 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  276  	unsafe_put_user(*((u64 *)&code), (u64 __user *)frame->retcode, Efault);
e2390741053e49 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  277  	user_access_end();
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  278  
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  279  	/* Set up registers for signal handler */
65ea5b03499035 arch/x86/ia32/ia32_signal.c    H. Peter Anvin      2008-01-30  280  	regs->sp = (unsigned long) frame;
235b80226b986d arch/x86/ia32/ia32_signal.c    Al Viro             2012-11-09  281  	regs->ip = (unsigned long) ksig->ka.sa.sa_handler;
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  282  
536e3ee4fed13d arch/x86_64/ia32/ia32_signal.c Andi Kleen          2006-09-26  283  	/* Make -mregparm=3 work */
65ea5b03499035 arch/x86/ia32/ia32_signal.c    H. Peter Anvin      2008-01-30  284  	regs->ax = sig;
65ea5b03499035 arch/x86/ia32/ia32_signal.c    H. Peter Anvin      2008-01-30  285  	regs->dx = 0;
65ea5b03499035 arch/x86/ia32/ia32_signal.c    H. Peter Anvin      2008-01-30  286  	regs->cx = 0;
536e3ee4fed13d arch/x86_64/ia32/ia32_signal.c Andi Kleen          2006-09-26  287  
b6edbb1e045a71 arch/x86/ia32/ia32_signal.c    Jeremy Fitzhardinge 2008-08-19  288  	loadsegment(ds, __USER32_DS);
b6edbb1e045a71 arch/x86/ia32/ia32_signal.c    Jeremy Fitzhardinge 2008-08-19  289  	loadsegment(es, __USER32_DS);
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  290  
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  291  	regs->cs = __USER32_CS;
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  292  	regs->ss = __USER32_DS;
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  293  
1d001df19d5323 arch/x86_64/ia32/ia32_signal.c Andi Kleen          2006-09-26  294  	return 0;
44a1d996325982 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  295  Efault:
44a1d996325982 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  296  	user_access_end();
44a1d996325982 arch/x86/ia32/ia32_signal.c    Al Viro             2020-02-15  297  	return -EFAULT;
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  298  }
^1da177e4c3f41 arch/x86_64/ia32/ia32_signal.c Linus Torvalds      2005-04-16  299  

:::::: The code at line 265 was first introduced by commit
:::::: e2390741053e4931841650b5eadac32697aa88aa x86: ia32_setup_frame(): consolidate uaccess areas

:::::: TO: Al Viro <viro@zeniv.linux.org.uk>
:::::: CC: Al Viro <viro@zeniv.linux.org.uk>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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  parent reply	other threads:[~2020-04-04  6:21 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-03  7:20 [PATCH v2 1/5] uaccess: Add user_read_access_begin/end and user_write_access_begin/end Christophe Leroy
2020-04-03  7:20 ` [PATCH v2 2/5] uaccess: Selectively open read or write user access Christophe Leroy
2020-05-29  4:20   ` Michael Ellerman
2020-04-03  7:20 ` [PATCH v2 3/5] drm/i915/gem: Replace user_access_begin by user_write_access_begin Christophe Leroy
2020-05-29  4:20   ` Michael Ellerman
2020-04-03  7:20 ` [PATCH v2 4/5] powerpc/uaccess: Implement user_read_access_begin and user_write_access_begin Christophe Leroy
2020-05-29  4:24   ` Michael Ellerman
2020-04-03  7:20 ` [PATCH v2 5/5] uaccess: Rename user_access_begin/end() to user_full_access_begin/end() Christophe Leroy
2020-04-03 18:01   ` Linus Torvalds
2020-04-03 20:52     ` Al Viro
2020-04-21  2:49       ` Al Viro
2020-04-21  9:12         ` Russell King - ARM Linux admin
2020-04-21 18:34         ` Linus Torvalds
2020-04-05 18:47     ` Christophe Leroy
2020-04-04  6:20   ` kbuild test robot [this message]
2020-04-04  7:17   ` kbuild test robot
2020-05-29  4:20 ` [PATCH v2 1/5] uaccess: Add user_read_access_begin/end and user_write_access_begin/end Michael Ellerman

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