linux-kernel - [tip:WIP.sched/core 118/162] arch/mips/sgi-ip27/ip27-berr.c:60:17: error: dereferencing pointer to incomplete type 'struct pt

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Message-ID: <201702061529.3FQUAD8Y%fengguang.wu@intel.com>
Date:   Mon, 6 Feb 2017 15:44:40 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org, tipbuild@...or.com
Subject: [tip:WIP.sched/core 118/162] arch/mips/sgi-ip27/ip27-berr.c:60:17:
 error: dereferencing pointer to incomplete type 'struct pt_regs'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.sched/core
head:   38c7fc1c938c469af27c032bf4eab0c4aaf4eba1
commit: d8c081caed34b16d17d639fa49889d2b7b22c9b0 [118/162] sched/headers: Remove <asm/ptrace.h> from <linux/sched.h>
config: mips-ip27_defconfig (attached as .config)
compiler: mips64-linux-gnuabi64-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout d8c081caed34b16d17d639fa49889d2b7b22c9b0
        # save the attached .config to linux build tree
        make.cross ARCH=mips 

All errors (new ones prefixed by >>):

   arch/mips/sgi-ip27/ip27-berr.c: In function 'ip27_be_handler':
>> arch/mips/sgi-ip27/ip27-berr.c:60:17: error: dereferencing pointer to incomplete type 'struct pt_regs'
     int data = regs->cp0_cause & 4;
                    ^~
   arch/mips/sgi-ip27/ip27-berr.c:76:2: error: implicit declaration of function 'force_sig' [-Werror=implicit-function-declaration]
     force_sig(SIGBUS, current);
     ^~~~~~~~~
   cc1: all warnings being treated as errors

vim +60 arch/mips/sgi-ip27/ip27-berr.c

^1da177e Linus Torvalds 2005-04-16  44  	printk("Hub error address is %08lx\n",
^1da177e Linus Torvalds 2005-04-16  45  	       (errst0 & PI_ERR_ST0_ADDR_MASK) >> (PI_ERR_ST0_ADDR_SHFT - 3));
^1da177e Linus Torvalds 2005-04-16  46  	printk("Incoming message command 0x%lx\n",
^1da177e Linus Torvalds 2005-04-16  47  	       (errst0 & PI_ERR_ST0_CMD_MASK) >> PI_ERR_ST0_CMD_SHFT);
^1da177e Linus Torvalds 2005-04-16  48  	printk("Supplemental field of incoming message is 0x%lx\n",
^1da177e Linus Torvalds 2005-04-16  49  	       (errst0 & PI_ERR_ST0_SUPPL_MASK) >> PI_ERR_ST0_SUPPL_SHFT);
^1da177e Linus Torvalds 2005-04-16  50  	printk("T5 Rn (for RRB only) is 0x%lx\n",
^1da177e Linus Torvalds 2005-04-16  51  	       (errst0 & PI_ERR_ST0_REQNUM_MASK) >> PI_ERR_ST0_REQNUM_SHFT);
^1da177e Linus Torvalds 2005-04-16  52  	printk("Error type is %s\n", err_type[wrb]
^1da177e Linus Torvalds 2005-04-16  53  	       [(errst0 & PI_ERR_ST0_TYPE_MASK) >> PI_ERR_ST0_TYPE_SHFT]
^1da177e Linus Torvalds 2005-04-16  54  		? : "invalid");
^1da177e Linus Torvalds 2005-04-16  55  }
^1da177e Linus Torvalds 2005-04-16  56  
^1da177e Linus Torvalds 2005-04-16  57  int ip27_be_handler(struct pt_regs *regs, int is_fixup)
^1da177e Linus Torvalds 2005-04-16  58  {
^1da177e Linus Torvalds 2005-04-16  59  	unsigned long errst0, errst1;
^1da177e Linus Torvalds 2005-04-16 @60  	int data = regs->cp0_cause & 4;
^1da177e Linus Torvalds 2005-04-16  61  	int cpu = LOCAL_HUB_L(PI_CPU_NUM);
^1da177e Linus Torvalds 2005-04-16  62  
^1da177e Linus Torvalds 2005-04-16  63  	if (is_fixup)
^1da177e Linus Torvalds 2005-04-16  64  		return MIPS_BE_FIXUP;
^1da177e Linus Torvalds 2005-04-16  65  
^1da177e Linus Torvalds 2005-04-16  66  	printk("Slice %c got %cbe at 0x%lx\n", 'A' + cpu, data ? 'd' : 'i',
^1da177e Linus Torvalds 2005-04-16  67  	       regs->cp0_epc);
^1da177e Linus Torvalds 2005-04-16  68  	printk("Hub information:\n");

:::::: The code at line 60 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

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