[linux-next:master 6849/7915] arch/riscv/kernel/vdso.c:123:27: error: 'next' undeclared; did you mean 'net'?

[linux-next:master 6849/7915] arch/riscv/kernel/vdso.c:123:27: error: 'next' undeclared; did you mean 'net'?

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   d4a0ae62a277377de396850ed4b709b6bd9b7326
commit: fe87c1493391a78238520253b1dd8f80144ced87 [6849/7915] riscv: Use vma iterator for vdso
config: riscv-allyesconfig (https://download.01.org/0day-ci/archive/20220224/202202241835.nj71K3LQ-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=fe87c1493391a78238520253b1dd8f80144ced87
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout fe87c1493391a78238520253b1dd8f80144ced87
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash

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/riscv/kernel/vdso.c:10:
   arch/riscv/kernel/vdso.c: In function 'vdso_join_timens':
>> arch/riscv/kernel/vdso.c:123:27: error: 'next' undeclared (first use in this function); did you mean 'net'?
     123 |         for_each_vma(vmi, next) {
         |                           ^~~~
   include/linux/mm.h:683:49: note: in definition of macro 'for_each_vma'
     683 | #define for_each_vma(vmi, vma)          while ((vma = vma_next(&(vmi))) != NULL)
         |                                                 ^~~
   arch/riscv/kernel/vdso.c:123:27: note: each undeclared identifier is reported only once for each function it appears in
     123 |         for_each_vma(vmi, next) {
         |                           ^~~~
   include/linux/mm.h:683:49: note: in definition of macro 'for_each_vma'
     683 | #define for_each_vma(vmi, vma)          while ((vma = vma_next(&(vmi))) != NULL)
         |                                                 ^~~


vim +123 arch/riscv/kernel/vdso.c

   107	
   108	/*
   109	 * The vvar mapping contains data for a specific time namespace, so when a task
   110	 * changes namespace we must unmap its vvar data for the old namespace.
   111	 * Subsequent faults will map in data for the new namespace.
   112	 *
   113	 * For more details see timens_setup_vdso_data().
   114	 */
   115	int vdso_join_timens(struct task_struct *task, struct time_namespace *ns)
   116	{
   117		struct mm_struct *mm = task->mm;
   118		struct vm_area_struct *vma;
   119		VMA_ITERATOR(vmi, mm, 0);
   120	
   121		mmap_read_lock(mm);
   122	
 > 123		for_each_vma(vmi, next) {
   124			unsigned long size = vma->vm_end - vma->vm_start;
   125	
   126			if (vma_is_special_mapping(vma, vdso_info.dm))
   127				zap_page_range(vma, vma->vm_start, size);
   128		}
   129	
   130		mmap_read_unlock(mm);
   131		return 0;
   132	}
   133	

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

Re: [linux-next:master 6849/7915] arch/riscv/kernel/vdso.c:123:27: error: 'next' undeclared; did you mean 'net'?

[Liam Howlett]

* kernel test robot <lkp@intel.com> [220224 05:34]:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   d4a0ae62a277377de396850ed4b709b6bd9b7326
> commit: fe87c1493391a78238520253b1dd8f80144ced87 [6849/7915] riscv: Use vma iterator for vdso
> config: riscv-allyesconfig (https://download.01.org/0day-ci/archive/20220224/202202241835.nj71K3LQ-lkp@intel.com/config)
> compiler: riscv64-linux-gcc (GCC) 11.2.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=fe87c1493391a78238520253b1dd8f80144ced87
>         git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>         git fetch --no-tags linux-next master
>         git checkout fe87c1493391a78238520253b1dd8f80144ced87
>         # save the config file to linux build tree
>         mkdir build_dir
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash
> 
> 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/riscv/kernel/vdso.c:10:
>    arch/riscv/kernel/vdso.c: In function 'vdso_join_timens':
> >> arch/riscv/kernel/vdso.c:123:27: error: 'next' undeclared (first use in this function); did you mean 'net'?
>      123 |         for_each_vma(vmi, next) {
>          |                           ^~~~
>    include/linux/mm.h:683:49: note: in definition of macro 'for_each_vma'
>      683 | #define for_each_vma(vmi, vma)          while ((vma = vma_next(&(vmi))) != NULL)
>          |                                                 ^~~
>    arch/riscv/kernel/vdso.c:123:27: note: each undeclared identifier is reported only once for each function it appears in
>      123 |         for_each_vma(vmi, next) {
>          |                           ^~~~
>    include/linux/mm.h:683:49: note: in definition of macro 'for_each_vma'
>      683 | #define for_each_vma(vmi, vma)          while ((vma = vma_next(&(vmi))) != NULL)
>          |                                                 ^~~

Thank you, this has already been fixed.

> 
> 
> vim +123 arch/riscv/kernel/vdso.c
> 
>    107	
>    108	/*
>    109	 * The vvar mapping contains data for a specific time namespace, so when a task
>    110	 * changes namespace we must unmap its vvar data for the old namespace.
>    111	 * Subsequent faults will map in data for the new namespace.
>    112	 *
>    113	 * For more details see timens_setup_vdso_data().
>    114	 */
>    115	int vdso_join_timens(struct task_struct *task, struct time_namespace *ns)
>    116	{
>    117		struct mm_struct *mm = task->mm;
>    118		struct vm_area_struct *vma;
>    119		VMA_ITERATOR(vmi, mm, 0);
>    120	
>    121		mmap_read_lock(mm);
>    122	
>  > 123		for_each_vma(vmi, next) {
>    124			unsigned long size = vma->vm_end - vma->vm_start;
>    125	
>    126			if (vma_is_special_mapping(vma, vdso_info.dm))
>    127				zap_page_range(vma, vma->vm_start, size);
>    128		}
>    129	
>    130		mmap_read_unlock(mm);
>    131		return 0;
>    132	}
>    133	
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org