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    SubjectRe: [PATCH v4 3/7] vmalloc: Add text_alloc() and text_free()
    Hi Jarkko,

    I love your patch! Yet something to improve:

    [auto build test ERROR on linus/master]
    [also build test ERROR on jeyu/modules-next v5.8-rc5 next-20200716]
    [cannot apply to tip/x86/core tip/perf/core]
    [If your patch is applied to the wrong git tree, kindly drop us a note.
    And when submitting patch, we suggest to use '--base' as documented in
    https://git-scm.com/docs/git-format-patch]

    url: https://github.com/0day-ci/linux/commits/Jarkko-Sakkinen/arch-x86-kprobes-Remove-MODULES-dependency/20200717-110947
    base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 07a56bb875afbe39dabbf6ba7b83783d166863db
    config: sparc-randconfig-s031-20200717 (attached as .config)
    compiler: sparc64-linux-gcc (GCC) 9.3.0
    reproduce:
    wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
    chmod +x ~/bin/make.cross
    # apt-get install sparse
    # sparse version: v0.6.2-49-g707c5017-dirty
    # save the attached .config to linux build tree
    COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=sparc

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

    All errors (new ones prefixed by >>):

    In file included from arch/sparc/include/asm/page.h:10,
    from arch/sparc/include/asm/string_32.h:13,
    from arch/sparc/include/asm/string.h:7,
    from include/linux/string.h:20,
    from include/linux/bitmap.h:9,
    from include/linux/cpumask.h:12,
    from arch/sparc/include/asm/smp_32.h:15,
    from arch/sparc/include/asm/smp.h:7,
    from arch/sparc/include/asm/switch_to_32.h:5,
    from arch/sparc/include/asm/switch_to.h:7,
    from arch/sparc/include/asm/ptrace.h:120,
    from arch/sparc/include/asm/thread_info_32.h:19,
    from arch/sparc/include/asm/thread_info.h:7,
    from include/linux/thread_info.h:38,
    from include/asm-generic/preempt.h:5,
    from ./arch/sparc/include/generated/asm/preempt.h:1,
    from include/linux/preempt.h:78,
    from include/linux/spinlock.h:51,
    from include/linux/seqlock.h:36,
    from include/linux/time.h:6,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:16,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    >> include/linux/mmzone.h:1317:29: error: expected identifier or '(' before 'unsigned'
    1317 | static inline int pfn_valid(unsigned long pfn)
    | ^~~~~~~~
    arch/sparc/include/asm/page_32.h:133:28: note: in definition of macro 'pfn_valid'
    133 | #define pfn_valid(pfn) (((pfn) >= (pfn_base)) && (((pfn)-(pfn_base)) < max_mapnr))
    | ^~~
    >> arch/sparc/include/asm/page_32.h:133:33: error: expected ')' before '>=' token
    133 | #define pfn_valid(pfn) (((pfn) >= (pfn_base)) && (((pfn)-(pfn_base)) < max_mapnr))
    | ^~
    include/linux/mmzone.h:1317:19: note: in expansion of macro 'pfn_valid'
    1317 | static inline int pfn_valid(unsigned long pfn)
    | ^~~~~~~~~
    arch/sparc/include/asm/page_32.h:133:48: error: expected ')' before '&&' token
    133 | #define pfn_valid(pfn) (((pfn) >= (pfn_base)) && (((pfn)-(pfn_base)) < max_mapnr))
    | ^~
    include/linux/mmzone.h:1317:19: note: in expansion of macro 'pfn_valid'
    1317 | static inline int pfn_valid(unsigned long pfn)
    | ^~~~~~~~~
    In file included from include/linux/page-flags-layout.h:28,
    from include/linux/mmzone.h:19,
    from include/linux/gfp.h:6,
    from include/linux/umh.h:4,
    from include/linux/kmod.h:9,
    from include/linux/module.h:16,
    from include/linux/moduleloader.h:6,
    from include/linux/vmalloc.h:12,
    from include/asm-generic/io.h:911,
    from arch/sparc/include/asm/io_32.h:14,
    from arch/sparc/include/asm/io.h:7,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:18,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/mmzone.h: In function 'pfn_in_present_section':
    >> arch/sparc/include/asm/sparsemem.h:11:33: error: 'MAX_PHYS_ADDRESS_BITS' undeclared (first use in this function); did you mean 'MAX_PHYSADDR_BITS'?
    11 | #define MAX_PHYSMEM_BITS MAX_PHYS_ADDRESS_BITS
    | ^~~~~~~~~~~~~~~~~~~~~
    include/linux/page-flags-layout.h:31:25: note: in expansion of macro 'MAX_PHYSMEM_BITS'
    31 | #define SECTIONS_SHIFT (MAX_PHYSMEM_BITS - SECTION_SIZE_BITS)
    | ^~~~~~~~~~~~~~~~
    include/linux/mmzone.h:1104:34: note: in expansion of macro 'SECTIONS_SHIFT'
    1104 | #define NR_MEM_SECTIONS (1UL << SECTIONS_SHIFT)
    | ^~~~~~~~~~~~~~
    include/linux/mmzone.h:1336:32: note: in expansion of macro 'NR_MEM_SECTIONS'
    1336 | if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
    | ^~~~~~~~~~~~~~~
    arch/sparc/include/asm/sparsemem.h:11:33: note: each undeclared identifier is reported only once for each function it appears in
    11 | #define MAX_PHYSMEM_BITS MAX_PHYS_ADDRESS_BITS
    | ^~~~~~~~~~~~~~~~~~~~~
    include/linux/page-flags-layout.h:31:25: note: in expansion of macro 'MAX_PHYSMEM_BITS'
    31 | #define SECTIONS_SHIFT (MAX_PHYSMEM_BITS - SECTION_SIZE_BITS)
    | ^~~~~~~~~~~~~~~~
    include/linux/mmzone.h:1104:34: note: in expansion of macro 'SECTIONS_SHIFT'
    1104 | #define NR_MEM_SECTIONS (1UL << SECTIONS_SHIFT)
    | ^~~~~~~~~~~~~~
    include/linux/mmzone.h:1336:32: note: in expansion of macro 'NR_MEM_SECTIONS'
    1336 | if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
    | ^~~~~~~~~~~~~~~
    In file included from include/linux/local_lock.h:5,
    from include/linux/radix-tree.h:19,
    from include/linux/idr.h:15,
    from include/linux/kernfs.h:13,
    from include/linux/sysfs.h:16,
    from include/linux/kobject.h:20,
    from include/linux/of.h:17,
    from arch/sparc/include/asm/openprom.h:15,
    from arch/sparc/include/asm/oplib_32.h:12,
    from arch/sparc/include/asm/oplib.h:7,
    from arch/sparc/include/asm/pgtable_32.h:32,
    from arch/sparc/include/asm/pgtable.h:7,
    from arch/sparc/include/asm/viking.h:13,
    from arch/sparc/include/asm/mbus.h:12,
    from arch/sparc/include/asm/elf_32.h:94,
    from arch/sparc/include/asm/elf.h:7,
    from include/linux/elf.h:6,
    from include/linux/module.h:18,
    from include/linux/moduleloader.h:6,
    from include/linux/vmalloc.h:12,
    from include/asm-generic/io.h:911,
    from arch/sparc/include/asm/io_32.h:14,
    from arch/sparc/include/asm/io.h:7,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:18,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/local_lock_internal.h: In function 'local_lock_acquire':
    >> include/linux/local_lock_internal.h:41:13: error: 'current' undeclared (first use in this function)
    41 | l->owner = current;
    | ^~~~~~~
    In file included from include/linux/kernel.h:11,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:15,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/local_lock_internal.h: In function 'local_lock_release':
    include/linux/local_lock_internal.h:46:34: error: 'current' undeclared (first use in this function)
    46 | DEBUG_LOCKS_WARN_ON(l->owner != current);
    | ^~~~~~~
    include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
    78 | # define unlikely(x) __builtin_expect(!!(x), 0)
    | ^
    include/linux/local_lock_internal.h:46:2: note: in expansion of macro 'DEBUG_LOCKS_WARN_ON'
    46 | DEBUG_LOCKS_WARN_ON(l->owner != current);
    | ^~~~~~~~~~~~~~~~~~~
    In file included from include/linux/sched/signal.h:7,
    from include/linux/rcuwait.h:6,
    from include/linux/percpu-rwsem.h:7,
    from include/linux/fs.h:33,
    from include/linux/proc_fs.h:10,
    from arch/sparc/include/asm/prom.h:18,
    from include/linux/of.h:250,
    from arch/sparc/include/asm/openprom.h:15,
    from arch/sparc/include/asm/oplib_32.h:12,
    from arch/sparc/include/asm/oplib.h:7,
    from arch/sparc/include/asm/pgtable_32.h:32,
    from arch/sparc/include/asm/pgtable.h:7,
    from arch/sparc/include/asm/viking.h:13,
    from arch/sparc/include/asm/mbus.h:12,
    from arch/sparc/include/asm/elf_32.h:94,
    from arch/sparc/include/asm/elf.h:7,
    from include/linux/elf.h:6,
    from include/linux/module.h:18,
    from include/linux/moduleloader.h:6,
    from include/linux/vmalloc.h:12,
    from include/asm-generic/io.h:911,
    from arch/sparc/include/asm/io_32.h:14,
    from arch/sparc/include/asm/io.h:7,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:18,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/sched.h: In function 'is_percpu_thread':
    >> include/linux/sched.h:1552:10: error: 'current' undeclared (first use in this function)
    1552 | return (current->flags & PF_NO_SETAFFINITY) &&
    | ^~~~~~~
    include/linux/sched.h: In function 'current_restore_flags':
    include/linux/sched.h:1613:2: error: 'current' undeclared (first use in this function)
    1613 | current->flags &= ~flags;
    | ^~~~~~~
    In file included from arch/sparc/include/asm/uaccess.h:7,
    from include/linux/uaccess.h:11,
    from include/linux/sched/task.h:11,
    from include/linux/sched/signal.h:9,
    from include/linux/rcuwait.h:6,
    from include/linux/percpu-rwsem.h:7,
    from include/linux/fs.h:33,
    from include/linux/proc_fs.h:10,
    from arch/sparc/include/asm/prom.h:18,
    from include/linux/of.h:250,
    from arch/sparc/include/asm/openprom.h:15,
    from arch/sparc/include/asm/oplib_32.h:12,
    from arch/sparc/include/asm/oplib.h:7,
    from arch/sparc/include/asm/pgtable_32.h:32,
    from arch/sparc/include/asm/pgtable.h:7,
    from arch/sparc/include/asm/viking.h:13,
    from arch/sparc/include/asm/mbus.h:12,
    from arch/sparc/include/asm/elf_32.h:94,
    from arch/sparc/include/asm/elf.h:7,
    from include/linux/elf.h:6,
    from include/linux/module.h:18,
    from include/linux/moduleloader.h:6,
    from include/linux/vmalloc.h:12,
    from include/asm-generic/io.h:911,
    from arch/sparc/include/asm/io_32.h:14,
    from arch/sparc/include/asm/io.h:7,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:18,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    arch/sparc/include/asm/uaccess_32.h: In function 'clear_user':
    >> arch/sparc/include/asm/uaccess_32.h:28:19: error: 'current' undeclared (first use in this function)
    28 | #define get_fs() (current->thread.current_ds)
    | ^~~~~~~
    arch/sparc/include/asm/uaccess_32.h:38:49: note: in definition of macro '__user_ok'
    38 | #define __user_ok(addr, size) ({ (void)(size); (addr) < STACK_TOP; })
    | ^~~~
    arch/sparc/include/asm/uaccess_32.h:40:53: note: in expansion of macro 'get_fs'
    40 | #define __access_ok(addr, size) (__user_ok((addr) & get_fs().seg, (size)))
    | ^~~~~~
    arch/sparc/include/asm/uaccess_32.h:273:11: note: in expansion of macro '__access_ok'
    273 | if (n && __access_ok((unsigned long) addr, n))
    | ^~~~~~~~~~~
    In file included from include/linux/kernel.h:11,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:15,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/uaccess.h: In function '_copy_from_user':
    >> arch/sparc/include/asm/uaccess_32.h:28:19: error: 'current' undeclared (first use in this function)
    28 | #define get_fs() (current->thread.current_ds)
    | ^~~~~~~
    include/linux/compiler.h:77:40: note: in definition of macro 'likely'
    77 | # define likely(x) __builtin_expect(!!(x), 1)
    | ^
    arch/sparc/include/asm/uaccess_32.h:40:34: note: in expansion of macro '__user_ok'
    40 | #define __access_ok(addr, size) (__user_ok((addr) & get_fs().seg, (size)))
    | ^~~~~~~~~
    arch/sparc/include/asm/uaccess_32.h:40:53: note: in expansion of macro 'get_fs'
    40 | #define __access_ok(addr, size) (__user_ok((addr) & get_fs().seg, (size)))
    | ^~~~~~
    arch/sparc/include/asm/uaccess_32.h:41:31: note: in expansion of macro '__access_ok'
    41 | #define access_ok(addr, size) __access_ok((unsigned long)(addr), size)
    | ^~~~~~~~~~~
    include/linux/uaccess.h:111:13: note: in expansion of macro 'access_ok'
    111 | if (likely(access_ok(from, n))) {
    | ^~~~~~~~~
    In file included from arch/sparc/include/asm/uaccess.h:7,
    from include/linux/uaccess.h:11,
    from include/linux/sched/task.h:11,
    from include/linux/sched/signal.h:9,
    from include/linux/rcuwait.h:6,
    from include/linux/percpu-rwsem.h:7,
    from include/linux/fs.h:33,
    from include/linux/proc_fs.h:10,
    from arch/sparc/include/asm/prom.h:18,
    from include/linux/of.h:250,
    from arch/sparc/include/asm/openprom.h:15,
    from arch/sparc/include/asm/oplib_32.h:12,
    from arch/sparc/include/asm/oplib.h:7,
    from arch/sparc/include/asm/pgtable_32.h:32,
    from arch/sparc/include/asm/pgtable.h:7,
    from arch/sparc/include/asm/viking.h:13,
    from arch/sparc/include/asm/mbus.h:12,
    from arch/sparc/include/asm/elf_32.h:94,
    from arch/sparc/include/asm/elf.h:7,
    from include/linux/elf.h:6,
    from include/linux/module.h:18,
    from include/linux/moduleloader.h:6,
    from include/linux/vmalloc.h:12,
    from include/asm-generic/io.h:911,
    from arch/sparc/include/asm/io_32.h:14,
    from arch/sparc/include/asm/io.h:7,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:18,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/uaccess.h: In function '_copy_to_user':
    >> arch/sparc/include/asm/uaccess_32.h:28:19: error: 'current' undeclared (first use in this function)
    28 | #define get_fs() (current->thread.current_ds)
    | ^~~~~~~
    arch/sparc/include/asm/uaccess_32.h:38:49: note: in definition of macro '__user_ok'
    38 | #define __user_ok(addr, size) ({ (void)(size); (addr) < STACK_TOP; })
    | ^~~~
    arch/sparc/include/asm/uaccess_32.h:40:53: note: in expansion of macro 'get_fs'
    40 | #define __access_ok(addr, size) (__user_ok((addr) & get_fs().seg, (size)))
    | ^~~~~~
    arch/sparc/include/asm/uaccess_32.h:41:31: note: in expansion of macro '__access_ok'
    41 | #define access_ok(addr, size) __access_ok((unsigned long)(addr), size)
    | ^~~~~~~~~~~
    include/linux/uaccess.h:129:6: note: in expansion of macro 'access_ok'
    129 | if (access_ok(to, n)) {
    | ^~~~~~~~~
    include/linux/uaccess.h: In function 'copy_in_user':
    >> arch/sparc/include/asm/uaccess_32.h:28:19: error: 'current' undeclared (first use in this function)
    28 | #define get_fs() (current->thread.current_ds)
    | ^~~~~~~
    arch/sparc/include/asm/uaccess_32.h:38:49: note: in definition of macro '__user_ok'
    38 | #define __user_ok(addr, size) ({ (void)(size); (addr) < STACK_TOP; })
    | ^~~~
    arch/sparc/include/asm/uaccess_32.h:40:53: note: in expansion of macro 'get_fs'
    40 | #define __access_ok(addr, size) (__user_ok((addr) & get_fs().seg, (size)))
    | ^~~~~~
    arch/sparc/include/asm/uaccess_32.h:41:31: note: in expansion of macro '__access_ok'
    41 | #define access_ok(addr, size) __access_ok((unsigned long)(addr), size)
    | ^~~~~~~~~~~
    include/linux/uaccess.h:160:6: note: in expansion of macro 'access_ok'
    160 | if (access_ok(to, n) && access_ok(from, n))
    | ^~~~~~~~~
    In file included from include/linux/sched/task.h:11,
    from include/linux/sched/signal.h:9,
    from include/linux/rcuwait.h:6,
    from include/linux/percpu-rwsem.h:7,
    from include/linux/fs.h:33,
    from include/linux/proc_fs.h:10,
    from arch/sparc/include/asm/prom.h:18,
    from include/linux/of.h:250,
    from arch/sparc/include/asm/openprom.h:15,
    from arch/sparc/include/asm/oplib_32.h:12,
    from arch/sparc/include/asm/oplib.h:7,
    from arch/sparc/include/asm/pgtable_32.h:32,
    from arch/sparc/include/asm/pgtable.h:7,
    from arch/sparc/include/asm/viking.h:13,
    from arch/sparc/include/asm/mbus.h:12,
    from arch/sparc/include/asm/elf_32.h:94,
    from arch/sparc/include/asm/elf.h:7,
    from include/linux/elf.h:6,
    from include/linux/module.h:18,
    from include/linux/moduleloader.h:6,
    from include/linux/vmalloc.h:12,
    from include/asm-generic/io.h:911,
    from arch/sparc/include/asm/io_32.h:14,
    from arch/sparc/include/asm/io.h:7,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:18,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    >> include/linux/uaccess.h:161:7: error: implicit declaration of function 'raw_copy_in_user'; did you mean 'raw_copy_to_user'? [-Werror=implicit-function-declaration]
    161 | n = raw_copy_in_user(to, from, n);
    | ^~~~~~~~~~~~~~~~
    | raw_copy_to_user
    include/linux/uaccess.h: In function 'pagefault_disabled_inc':
    >> include/linux/uaccess.h:168:2: error: 'current' undeclared (first use in this function)
    168 | current->pagefault_disabled++;
    | ^~~~~~~
    include/linux/uaccess.h: In function 'pagefault_disabled_dec':
    include/linux/uaccess.h:173:2: error: 'current' undeclared (first use in this function)
    173 | current->pagefault_disabled--;
    | ^~~~~~~
    include/linux/uaccess.h: In function 'pagefault_disabled':
    include/linux/uaccess.h:208:9: error: 'current' undeclared (first use in this function)
    208 | return current->pagefault_disabled != 0;
    | ^~~~~~~
    In file included from include/linux/kernel.h:15,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:15,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/ratelimit.h: In function 'ratelimit_state_exit':
    >> include/linux/ratelimit.h:63:4: error: 'current' undeclared (first use in this function)
    63 | current->comm, rs->missed);
    | ^~~~~~~
    include/linux/printk.h:348:37: note: in definition of macro 'pr_warn'
    348 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
    | ^~~~~~~~~~~
    In file included from include/linux/rcuwait.h:6,
    from include/linux/percpu-rwsem.h:7,
    from include/linux/fs.h:33,
    from include/linux/proc_fs.h:10,
    from arch/sparc/include/asm/prom.h:18,
    from include/linux/of.h:250,
    from arch/sparc/include/asm/openprom.h:15,
    from arch/sparc/include/asm/oplib_32.h:12,
    from arch/sparc/include/asm/oplib.h:7,
    from arch/sparc/include/asm/pgtable_32.h:32,
    from arch/sparc/include/asm/pgtable.h:7,
    from arch/sparc/include/asm/viking.h:13,
    from arch/sparc/include/asm/mbus.h:12,
    from arch/sparc/include/asm/elf_32.h:94,
    from arch/sparc/include/asm/elf.h:7,
    from include/linux/elf.h:6,
    from include/linux/module.h:18,
    from include/linux/moduleloader.h:6,
    from include/linux/vmalloc.h:12,
    from include/asm-generic/io.h:911,
    from arch/sparc/include/asm/io_32.h:14,
    from arch/sparc/include/asm/io.h:7,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:18,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/sched/signal.h: In function 'kernel_dequeue_signal':
    >> include/linux/sched/signal.h:280:29: error: 'current' undeclared (first use in this function)
    280 | struct task_struct *task = current;
    | ^~~~~~~
    include/linux/sched/signal.h: In function 'kernel_signal_stop':
    include/linux/sched/signal.h:293:17: error: 'current' undeclared (first use in this function)
    293 | spin_lock_irq(&current->sighand->siglock);
    | ^~~~~~~
    include/linux/sched/signal.h: In function 'restart_syscall':
    include/linux/sched/signal.h:352:22: error: 'current' undeclared (first use in this function)
    352 | set_tsk_thread_flag(current, TIF_SIGPENDING);
    | ^~~~~~~
    In file included from include/linux/kernel.h:11,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:15,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/sched/signal.h: In function 'fault_signal_pending':
    include/linux/sched/signal.h:391:26: error: 'current' undeclared (first use in this function)
    391 | (fatal_signal_pending(current) ||
    | ^~~~~~~
    include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
    78 | # define unlikely(x) __builtin_expect(!!(x), 0)
    | ^
    In file included from include/linux/rcuwait.h:6,
    from include/linux/percpu-rwsem.h:7,
    from include/linux/fs.h:33,
    from include/linux/proc_fs.h:10,
    from arch/sparc/include/asm/prom.h:18,
    from include/linux/of.h:250,
    from arch/sparc/include/asm/openprom.h:15,
    from arch/sparc/include/asm/oplib_32.h:12,
    from arch/sparc/include/asm/oplib.h:7,
    from arch/sparc/include/asm/pgtable_32.h:32,
    from arch/sparc/include/asm/pgtable.h:7,
    from arch/sparc/include/asm/viking.h:13,
    from arch/sparc/include/asm/mbus.h:12,
    from arch/sparc/include/asm/elf_32.h:94,
    from arch/sparc/include/asm/elf.h:7,
    from include/linux/elf.h:6,
    from include/linux/module.h:18,
    from include/linux/moduleloader.h:6,
    from include/linux/vmalloc.h:12,
    from include/asm-generic/io.h:911,
    from arch/sparc/include/asm/io_32.h:14,
    from arch/sparc/include/asm/io.h:7,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:18,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/sched/signal.h: In function 'restore_saved_sigmask':
    include/linux/sched/signal.h:497:26: error: 'current' undeclared (first use in this function)
    497 | __set_current_blocked(&current->saved_sigmask);
    | ^~~~~~~
    include/linux/sched/signal.h: In function 'sigmask_to_save':
    include/linux/sched/signal.h:512:19: error: 'current' undeclared (first use in this function)
    512 | sigset_t *res = &current->blocked;
    | ^~~~~~~
    include/linux/sched/signal.h: In function 'on_sig_stack':
    include/linux/sched/signal.h:541:6: error: 'current' undeclared (first use in this function)
    541 | if (current->sas_ss_flags & SS_AUTODISARM)
    | ^~~~~~~
    include/linux/sched/signal.h: In function 'sas_ss_flags':
    include/linux/sched/signal.h:555:7: error: 'current' undeclared (first use in this function)
    555 | if (!current->sas_ss_size)
    | ^~~~~~~
    include/linux/sched/signal.h: In function 'sigsp':
    include/linux/sched/signal.h:574:10: error: 'current' undeclared (first use in this function)
    574 | return current->sas_ss_sp + current->sas_ss_size;
    | ^~~~~~~
    include/linux/sched/signal.h: In function 'rlimit':
    include/linux/sched/signal.h:710:21: error: 'current' undeclared (first use in this function)
    710 | return task_rlimit(current, limit);
    | ^~~~~~~
    include/linux/sched/signal.h: In function 'rlimit_max':
    include/linux/sched/signal.h:715:25: error: 'current' undeclared (first use in this function)
    715 | return task_rlimit_max(current, limit);
    | ^~~~~~~
    In file included from include/linux/rbtree.h:22,
    from include/linux/vmalloc.h:10,
    from include/asm-generic/io.h:911,
    from arch/sparc/include/asm/io_32.h:14,
    from arch/sparc/include/asm/io.h:7,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:18,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/rcuwait.h: In function 'prepare_to_rcuwait':
    >> include/linux/rcuwait.h:47:30: error: 'current' undeclared (first use in this function)
    47 | rcu_assign_pointer(w->task, current);
    | ^~~~~~~
    include/linux/rcupdate.h:409:36: note: in definition of macro 'rcu_assign_pointer'
    409 | uintptr_t _r_a_p__v = (uintptr_t)(v); \
    | ^
    In file included from include/linux/sched/signal.h:7,
    from include/linux/rcuwait.h:6,
    from include/linux/percpu-rwsem.h:7,
    from include/linux/fs.h:33,
    from include/linux/proc_fs.h:10,
    from arch/sparc/include/asm/prom.h:18,
    from include/linux/of.h:250,
    from arch/sparc/include/asm/openprom.h:15,
    from arch/sparc/include/asm/oplib_32.h:12,
    from arch/sparc/include/asm/oplib.h:7,
    from arch/sparc/include/asm/pgtable_32.h:32,
    from arch/sparc/include/asm/pgtable.h:7,
    from arch/sparc/include/asm/viking.h:13,
    from arch/sparc/include/asm/mbus.h:12,
    from arch/sparc/include/asm/elf_32.h:94,
    from arch/sparc/include/asm/elf.h:7,
    from include/linux/elf.h:6,
    from include/linux/module.h:18,
    from include/linux/moduleloader.h:6,
    from include/linux/vmalloc.h:12,
    from include/asm-generic/io.h:911,
    from arch/sparc/include/asm/io_32.h:14,
    from arch/sparc/include/asm/io.h:7,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:18,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/rcuwait.h: In function 'finish_rcuwait':
    include/linux/sched.h:133:3: error: 'current' undeclared (first use in this function)
    133 | current->task_state_change = _THIS_IP_; \
    | ^~~~~~~
    include/linux/rcuwait.h:53:2: note: in expansion of macro '__set_current_state'
    53 | __set_current_state(TASK_RUNNING);
    | ^~~~~~~~~~~~~~~~~~~
    In file included from include/linux/fs.h:38,
    from include/linux/proc_fs.h:10,
    from arch/sparc/include/asm/prom.h:18,
    from include/linux/of.h:250,
    from arch/sparc/include/asm/openprom.h:15,
    from arch/sparc/include/asm/oplib_32.h:12,
    from arch/sparc/include/asm/oplib.h:7,
    from arch/sparc/include/asm/pgtable_32.h:32,
    from arch/sparc/include/asm/pgtable.h:7,
    from arch/sparc/include/asm/viking.h:13,
    from arch/sparc/include/asm/mbus.h:12,
    from arch/sparc/include/asm/elf_32.h:94,
    from arch/sparc/include/asm/elf.h:7,
    from include/linux/elf.h:6,
    from include/linux/module.h:18,
    from include/linux/moduleloader.h:6,
    from include/linux/vmalloc.h:12,
    from include/asm-generic/io.h:911,
    from arch/sparc/include/asm/io_32.h:14,
    from arch/sparc/include/asm/io.h:7,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:18,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    include/linux/ioprio.h: In function 'get_current_ioprio':
    >> include/linux/ioprio.h:79:27: error: 'current' undeclared (first use in this function)
    79 | struct io_context *ioc = current->io_context;
    | ^~~~~~~
    In file included from arch/sparc/include/asm/page_32.h:136,
    from arch/sparc/include/asm/page.h:10,
    from arch/sparc/include/asm/string_32.h:13,
    from arch/sparc/include/asm/string.h:7,
    from include/linux/string.h:20,
    from include/linux/bitmap.h:9,
    from include/linux/cpumask.h:12,
    from arch/sparc/include/asm/smp_32.h:15,
    from arch/sparc/include/asm/smp.h:7,
    from arch/sparc/include/asm/switch_to_32.h:5,
    from arch/sparc/include/asm/switch_to.h:7,
    from arch/sparc/include/asm/ptrace.h:120,
    from arch/sparc/include/asm/thread_info_32.h:19,
    from arch/sparc/include/asm/thread_info.h:7,
    from include/linux/thread_info.h:38,
    from include/asm-generic/preempt.h:5,
    from ./arch/sparc/include/generated/asm/preempt.h:1,
    from include/linux/preempt.h:78,
    from include/linux/spinlock.h:51,
    from include/linux/seqlock.h:36,
    from include/linux/time.h:6,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:16,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    arch/sparc/include/asm/pgtable_32.h: In function 'pmd_page':
    include/asm-generic/memory_model.h:54:29: error: 'vmemmap' undeclared (first use in this function); did you mean 'mem_map'?
    54 | #define __pfn_to_page(pfn) (vmemmap + (pfn))
    | ^~~~~~~
    include/asm-generic/memory_model.h:82:21: note: in expansion of macro '__pfn_to_page'
    82 | #define pfn_to_page __pfn_to_page
    | ^~~~~~~~~~~~~
    arch/sparc/include/asm/pgtable_32.h:135:9: note: in expansion of macro 'pfn_to_page'
    135 | return pfn_to_page((pmd_val(pmd) & SRMMU_PTD_PMASK) >> (PAGE_SHIFT-4));
    | ^~~~~~~~~~~
    In file included from arch/sparc/include/asm/page.h:10,
    from arch/sparc/include/asm/string_32.h:13,
    from arch/sparc/include/asm/string.h:7,
    from include/linux/string.h:20,
    from include/linux/bitmap.h:9,
    from include/linux/cpumask.h:12,
    from arch/sparc/include/asm/smp_32.h:15,
    from arch/sparc/include/asm/smp.h:7,
    from arch/sparc/include/asm/switch_to_32.h:5,
    from arch/sparc/include/asm/switch_to.h:7,
    from arch/sparc/include/asm/ptrace.h:120,
    from arch/sparc/include/asm/thread_info_32.h:19,
    from arch/sparc/include/asm/thread_info.h:7,
    from include/linux/thread_info.h:38,
    from include/asm-generic/preempt.h:5,
    from ./arch/sparc/include/generated/asm/preempt.h:1,
    from include/linux/preempt.h:78,
    from include/linux/spinlock.h:51,
    from include/linux/seqlock.h:36,
    from include/linux/time.h:6,
    from arch/sparc/vdso/vdso32/../vclock_gettime.c:16,
    from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    arch/sparc/include/asm/pgtable_32.h: In function 'mk_pte':
    include/asm-generic/memory_model.h:55:54: error: 'vmemmap' undeclared (first use in this function); did you mean 'mem_map'?
    55 | #define __page_to_pfn(page) (unsigned long)((page) - vmemmap)
    | ^~~~~~~
    arch/sparc/include/asm/page_32.h:99:19: note: in definition of macro '__pte'
    99 | #define __pte(x) (x)
    | ^
    include/asm-generic/memory_model.h:81:21: note: in expansion of macro '__page_to_pfn'
    81 | #define page_to_pfn __page_to_pfn
    | ^~~~~~~~~~~~~
    arch/sparc/include/asm/pgtable_32.h:297:16: note: in expansion of macro 'page_to_pfn'
    297 | return __pte((page_to_pfn(page) << (PAGE_SHIFT-4)) | pgprot_val(pgprot));
    | ^~~~~~~~~~~
    In file included from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
    arch/sparc/vdso/vdso32/../vclock_gettime.c: At top level:
    arch/sparc/vdso/vdso32/../vclock_gettime.c:254:1: warning: no previous prototype for '__vdso_clock_gettime' [-Wmissing-prototypes]
    254 | __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
    | ^~~~~~~~~~~~~~~~~~~~
    arch/sparc/vdso/vdso32/../vclock_gettime.c:282:1: warning: no previous prototype for '__vdso_clock_gettime_stick' [-Wmissing-prototypes]
    282 | __vdso_clock_gettime_stick(clockid_t clock, struct __kernel_old_timespec *ts)
    | ^~~~~~~~~~~~~~~~~~~~~~~~~~
    arch/sparc/vdso/vdso32/../vclock_gettime.c:307:1: warning: no previous prototype for '__vdso_gettimeofday' [-Wmissing-prototypes]
    307 | __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
    | ^~~~~~~~~~~~~~~~~~~
    arch/sparc/vdso/vdso32/../vclock_gettime.c:343:1: warning: no previous prototype for '__vdso_gettimeofday_stick' [-Wmissing-prototypes]
    343 | __vdso_gettimeofday_stick(struct __kernel_old_timeval *tv, struct timezone *tz)
    | ^~~~~~~~~~~~~~~~~~~~~~~~~
    cc1: some warnings being treated as errors

    vim +1317 include/linux/mmzone.h

    f46edbd1b1516d Dan Williams 2019-07-18 1315
    7b7bf499f79de3 Will Deacon 2011-05-19 1316 #ifndef CONFIG_HAVE_ARCH_PFN_VALID
    d41dee369bff3b Andy Whitcroft 2005-06-23 @1317 static inline int pfn_valid(unsigned long pfn)
    d41dee369bff3b Andy Whitcroft 2005-06-23 1318 {
    f46edbd1b1516d Dan Williams 2019-07-18 1319 struct mem_section *ms;
    f46edbd1b1516d Dan Williams 2019-07-18 1320
    d41dee369bff3b Andy Whitcroft 2005-06-23 1321 if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
    d41dee369bff3b Andy Whitcroft 2005-06-23 1322 return 0;
    f46edbd1b1516d Dan Williams 2019-07-18 1323 ms = __nr_to_section(pfn_to_section_nr(pfn));
    f46edbd1b1516d Dan Williams 2019-07-18 1324 if (!valid_section(ms))
    f46edbd1b1516d Dan Williams 2019-07-18 1325 return 0;
    f46edbd1b1516d Dan Williams 2019-07-18 1326 /*
    f46edbd1b1516d Dan Williams 2019-07-18 1327 * Traditionally early sections always returned pfn_valid() for
    f46edbd1b1516d Dan Williams 2019-07-18 1328 * the entire section-sized span.
    f46edbd1b1516d Dan Williams 2019-07-18 1329 */
    f46edbd1b1516d Dan Williams 2019-07-18 1330 return early_section(ms) || pfn_section_valid(ms, pfn);
    d41dee369bff3b Andy Whitcroft 2005-06-23 1331 }
    7b7bf499f79de3 Will Deacon 2011-05-19 1332 #endif
    d41dee369bff3b Andy Whitcroft 2005-06-23 1333

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