Re: [PATCH 4/4] powerpc: machine check interrupt is a non-maskable interrupt

Hi Nicholas,

[auto build test ERROR on powerpc/next]
[also build test ERROR on v4.12 next-20170706]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Nicholas-Piggin/machine-check-handling-improvements/20170706-181843
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-defconfig (attached as .config)
compiler: powerpc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=powerpc 

All errors (new ones prefixed by >>):

   arch/powerpc/kernel/traps.c: In function 'machine_check_exception':

quoted

arch/powerpc/kernel/traps.c:788:13: error: passing argument 1 of 'nmi_panic' from incompatible pointer type [-Werror=incompatible-pointer-types]

      nmi_panic("Unrecoverable Machine check");
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/asm-generic/bug.h:15:0,
                    from arch/powerpc/include/asm/bug.h:127,
                    from include/linux/bug.h:4,
                    from arch/powerpc/include/asm/mmu.h:125,
                    from arch/powerpc/include/asm/lppaca.h:36,
                    from arch/powerpc/include/asm/paca.h:21,
                    from arch/powerpc/include/asm/current.h:16,
                    from include/linux/sched.h:11,
                    from arch/powerpc/kernel/traps.c:19:
   include/linux/kernel.h:271:6: note: expected 'struct pt_regs *' but argument is of type 'char *'
    void nmi_panic(struct pt_regs *regs, const char *msg);
         ^~~~~~~~~

quoted

arch/powerpc/kernel/traps.c:788:3: error: too few arguments to function 'nmi_panic'

      nmi_panic("Unrecoverable Machine check");
      ^~~~~~~~~
   In file included from include/asm-generic/bug.h:15:0,
                    from arch/powerpc/include/asm/bug.h:127,
                    from include/linux/bug.h:4,
                    from arch/powerpc/include/asm/mmu.h:125,
                    from arch/powerpc/include/asm/lppaca.h:36,
                    from arch/powerpc/include/asm/paca.h:21,
                    from arch/powerpc/include/asm/current.h:16,
                    from include/linux/sched.h:11,
                    from arch/powerpc/kernel/traps.c:19:
   include/linux/kernel.h:271:6: note: declared here
    void nmi_panic(struct pt_regs *regs, const char *msg);
         ^~~~~~~~~
   cc1: all warnings being treated as errors
--
   arch/powerpc/platforms/powernv/opal.c: In function 'opal_machine_check':

quoted

arch/powerpc/platforms/powernv/opal.c:452:12: error: passing argument 1 of 'nmi_panic' from incompatible pointer type [-Werror=incompatible-pointer-types]

     nmi_panic("Unrecoverable Machine Check exception");
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/list.h:8:0,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:21,
                    from arch/powerpc/platforms/powernv/opal.c:16:
   include/linux/kernel.h:271:6: note: expected 'struct pt_regs *' but argument is of type 'char *'
    void nmi_panic(struct pt_regs *regs, const char *msg);
         ^~~~~~~~~

quoted

arch/powerpc/platforms/powernv/opal.c:452:2: error: too few arguments to function 'nmi_panic'

     nmi_panic("Unrecoverable Machine Check exception");
     ^~~~~~~~~
   In file included from include/linux/list.h:8:0,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:21,
                    from arch/powerpc/platforms/powernv/opal.c:16:
   include/linux/kernel.h:271:6: note: declared here
    void nmi_panic(struct pt_regs *regs, const char *msg);
         ^~~~~~~~~
   arch/powerpc/platforms/powernv/opal.c:453:1: error: control reaches end of non-void function [-Werror=return-type]
    }
    ^
   cc1: all warnings being treated as errors

vim +/nmi_panic +788 arch/powerpc/kernel/traps.c

   782			goto bail;
   783	
   784		die("Machine check", regs, SIGBUS);
   785	
   786		/* Must die if the interrupt is not recoverable */
   787		if (!(regs->msr & MSR_RI))
 > 788			nmi_panic("Unrecoverable Machine check");
   789	
   790	bail:
   791		if (!nested)

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