Re: [PATCH v4 1/4] x86/mm: Adapt MODULES_END based on Fixmap section size

From: kbuild test robot <lkp@intel.com>
To: Thomas Garnier <thgarnie@google.com>
Cc: kbuild-all@01.org, "Thomas Gleixner" <tglx@linutronix.de>,
	"Ingo Molnar" <mingo@redhat.com>,
	"H . Peter Anvin" <hpa@zytor.com>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Thomas Garnier" <thgarnie@google.com>,
	"Kees Cook" <keescook@chromium.org>,
	"Lorenzo Stoakes" <lstoakes@gmail.com>,
	"Juergen Gross" <jgross@suse.com>,
	"Andy Lutomirski" <luto@amacapital.net>,
	"Rafael J . Wysocki" <rjw@rjwysocki.net>,
	"Len Brown" <len.brown@intel.com>, "Pavel Machek" <pavel@ucw.cz>,
	"Jiri Kosina" <jikos@kernel.org>,
	"Matt Fleming" <matt@codeblueprint.co.uk>,
	"Ard Biesheuvel" <ard.biesheuvel@linaro.org>,
	"Boris Ostrovsky" <boris.ostrovsky@oracle.com>,
	"Rusty Russell" <rusty@rustcorp.com.au>,
	"Borislav Petkov" <bp@suse.de>,
	"Christian Borntraeger" <borntraeger@de.ibm.com>,
	"Brian Gerst" <brgerst@gmail.com>,
	"He Chen" <he.chen@linux.intel.com>,
	"Luis R . Rodriguez" <mcgrof@kernel.org>,
	"Stanislaw Gruszka" <sgruszka@redhat.com>,
	"Arnd Bergmann" <arnd@arndb.de>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Dave Hansen" <dave.hansen@intel.com>,
	"Vitaly Kuznetsov" <vkuznets@redhat.com>,
	"Paul Gortmaker" <paul.gortmaker@windriver.com>,
	"Josh Poimboeuf" <jpoimboe@redhat.com>,
	"Tim Chen" <tim.c.chen@linux.intel.com>,
	"Andi Kleen" <ak@linux.intel.com>, "Jiri Olsa" <jolsa@redhat.com>,
	"Michael Ellerman" <mpe@ellerman.id.au>,
	"Joerg Roedel" <joro@8bytes.org>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Andy Lutomirski" <luto@kernel.org>,
	x86@kernel.org, linux-kernel@vger.kernel.org,
	linux-doc@vger.kernel.org, linux-pm@vger.kernel.org,
	linux-efi@vger.kernel.org, xen-devel@lists.xenproject.org,
	lguest@lists.ozlabs.org, kvm@vger.kernel.org,
	kernel-hardening@lists.openwall.com
Subject: Re: [PATCH v4 1/4] x86/mm: Adapt MODULES_END based on Fixmap section size
Date: Fri, 17 Feb 2017 08:45:21 +0800	[thread overview]
Message-ID: <201702170838.cW5onrBk%fengguang.wu@intel.com> (raw)
In-Reply-To: <20170216215438.126111-1-thgarnie@google.com>

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Hi Thomas,

[auto build test ERROR on next-20170216]
[also build test ERROR on v4.10-rc8]
[cannot apply to tip/x86/core kvm/linux-next tip/auto-latest v4.9-rc8 v4.9-rc7 v4.9-rc6]
[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/Thomas-Garnier/x86-mm-Adapt-MODULES_END-based-on-Fixmap-section-size/20170217-072759
config: x86_64-randconfig-s4-02170325 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   In file included from arch/x86/include/asm/pgtable_types.h:240:0,
                    from arch/x86/include/asm/paravirt_types.h:44,
                    from arch/x86/include/asm/ptrace.h:71,
                    from arch/x86/include/asm/math_emu.h:4,
                    from arch/x86/include/asm/processor.h:11,
                    from arch/x86/include/asm/cpufeature.h:4,
                    from arch/x86/include/asm/thread_info.h:52,
                    from include/linux/thread_info.h:25,
                    from arch/x86/include/asm/preempt.h:6,
                    from include/linux/preempt.h:59,
                    from include/linux/spinlock.h:50,
                    from include/linux/wait.h:8,
                    from include/linux/fs.h:5,
                    from include/linux/debugfs.h:18,
                    from arch/x86/mm/dump_pagetables.c:15:
>> arch/x86/include/asm/pgtable_64_types.h:71:23: error: implicit declaration of function '__fix_to_virt' [-Werror=implicit-function-declaration]
    #define MODULES_END   __fix_to_virt(__end_of_fixed_addresses + 1)
                          ^
   arch/x86/mm/dump_pagetables.c:87:4: note: in expansion of macro 'MODULES_END'
     { MODULES_END,          "End Modules" },
       ^~~~~~~~~~~
   arch/x86/include/asm/pgtable_64_types.h:71:37: error: '__end_of_fixed_addresses' undeclared here (not in a function)
    #define MODULES_END   __fix_to_virt(__end_of_fixed_addresses + 1)
                                        ^
   arch/x86/mm/dump_pagetables.c:87:4: note: in expansion of macro 'MODULES_END'
     { MODULES_END,          "End Modules" },
       ^~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/__fix_to_virt +71 arch/x86/include/asm/pgtable_64_types.h

    65	#define VMALLOC_START	__VMALLOC_BASE
    66	#define VMEMMAP_START	__VMEMMAP_BASE
    67	#endif /* CONFIG_RANDOMIZE_MEMORY */
    68	#define VMALLOC_END	(VMALLOC_START + _AC((VMALLOC_SIZE_TB << 40) - 1, UL))
    69	#define MODULES_VADDR    (__START_KERNEL_map + KERNEL_IMAGE_SIZE)
    70	/* The module sections ends with the start of the fixmap */
  > 71	#define MODULES_END   __fix_to_virt(__end_of_fixed_addresses + 1)
    72	#define MODULES_LEN   (MODULES_END - MODULES_VADDR)
    73	#define ESPFIX_PGD_ENTRY _AC(-2, UL)
    74	#define ESPFIX_BASE_ADDR (ESPFIX_PGD_ENTRY << PGDIR_SHIFT)

---
0-DAY kernel test infrastructure                Open Source Technology Center
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