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Message-ID: <202110280950.AAxOjzJx-lkp@intel.com>
Date:   Thu, 28 Oct 2021 09:13:58 +0800
From:   kernel test robot <lkp@...el.com>
To:     Laurent Vivier <laurent@...ier.eu>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Christian Brauner <christian.brauner@...ntu.com>
Subject: [brauner:fs.binfmt 2/2] fs/binfmt_misc.c:86:22: error: assignment to
 'struct binfmt_misc *' from 'int' makes pointer from integer without a cast

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git fs.binfmt
head:   d484ec2850c2cd85d06837319ef57d6cec24305a
commit: d484ec2850c2cd85d06837319ef57d6cec24305a [2/2] binfmt_misc: allow sandboxed mounts
config: s390-allmodconfig (attached as .config)
compiler: s390-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/brauner/linux.git/commit/?id=d484ec2850c2cd85d06837319ef57d6cec24305a
        git remote add brauner https://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git
        git fetch --no-tags brauner fs.binfmt
        git checkout d484ec2850c2cd85d06837319ef57d6cec24305a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=s390 

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

All errors (new ones prefixed by >>):

   fs/binfmt_misc.c:86:24: note: in expansion of macro 'smp_load_acquire'
      86 |                 misc = smp_load_acquire(&user_ns->binfmt_misc);
         |                        ^~~~~~~~~~~~~~~~
   In file included from <command-line>:
   fs/binfmt_misc.c:86:49: error: 'struct user_namespace' has no member named 'binfmt_misc'
      86 |                 misc = smp_load_acquire(&user_ns->binfmt_misc);
         |                                                 ^~
   include/linux/compiler_types.h:302:23: note: in definition of macro '__compiletime_assert'
     302 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert'
     322 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:325:9: note: in expansion of macro 'compiletime_assert'
     325 |         compiletime_assert(__native_word(t),                            \
         |         ^~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:325:28: note: in expansion of macro '__native_word'
     325 |         compiletime_assert(__native_word(t),                            \
         |                            ^~~~~~~~~~~~~
   arch/s390/include/asm/barrier.h:44:9: note: in expansion of macro 'compiletime_assert_atomic_type'
      44 |         compiletime_assert_atomic_type(*p);                             \
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/asm-generic/barrier.h:142:29: note: in expansion of macro '__smp_load_acquire'
     142 | #define smp_load_acquire(p) __smp_load_acquire(p)
         |                             ^~~~~~~~~~~~~~~~~~
   fs/binfmt_misc.c:86:24: note: in expansion of macro 'smp_load_acquire'
      86 |                 misc = smp_load_acquire(&user_ns->binfmt_misc);
         |                        ^~~~~~~~~~~~~~~~
   fs/binfmt_misc.c:86:49: error: 'struct user_namespace' has no member named 'binfmt_misc'
      86 |                 misc = smp_load_acquire(&user_ns->binfmt_misc);
         |                                                 ^~
   include/linux/compiler_types.h:302:23: note: in definition of macro '__compiletime_assert'
     302 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert'
     322 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:325:9: note: in expansion of macro 'compiletime_assert'
     325 |         compiletime_assert(__native_word(t),                            \
         |         ^~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:325:28: note: in expansion of macro '__native_word'
     325 |         compiletime_assert(__native_word(t),                            \
         |                            ^~~~~~~~~~~~~
   arch/s390/include/asm/barrier.h:44:9: note: in expansion of macro 'compiletime_assert_atomic_type'
      44 |         compiletime_assert_atomic_type(*p);                             \
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/asm-generic/barrier.h:142:29: note: in expansion of macro '__smp_load_acquire'
     142 | #define smp_load_acquire(p) __smp_load_acquire(p)
         |                             ^~~~~~~~~~~~~~~~~~
   fs/binfmt_misc.c:86:24: note: in expansion of macro 'smp_load_acquire'
      86 |                 misc = smp_load_acquire(&user_ns->binfmt_misc);
         |                        ^~~~~~~~~~~~~~~~
   fs/binfmt_misc.c:86:49: error: 'struct user_namespace' has no member named 'binfmt_misc'
      86 |                 misc = smp_load_acquire(&user_ns->binfmt_misc);
         |                                                 ^~
   include/linux/compiler_types.h:302:23: note: in definition of macro '__compiletime_assert'
     302 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert'
     322 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:325:9: note: in expansion of macro 'compiletime_assert'
     325 |         compiletime_assert(__native_word(t),                            \
         |         ^~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:325:28: note: in expansion of macro '__native_word'
     325 |         compiletime_assert(__native_word(t),                            \
         |                            ^~~~~~~~~~~~~
   arch/s390/include/asm/barrier.h:44:9: note: in expansion of macro 'compiletime_assert_atomic_type'
      44 |         compiletime_assert_atomic_type(*p);                             \
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/asm-generic/barrier.h:142:29: note: in expansion of macro '__smp_load_acquire'
     142 | #define smp_load_acquire(p) __smp_load_acquire(p)
         |                             ^~~~~~~~~~~~~~~~~~
   fs/binfmt_misc.c:86:24: note: in expansion of macro 'smp_load_acquire'
      86 |                 misc = smp_load_acquire(&user_ns->binfmt_misc);
         |                        ^~~~~~~~~~~~~~~~
   fs/binfmt_misc.c:86:49: error: 'struct user_namespace' has no member named 'binfmt_misc'
      86 |                 misc = smp_load_acquire(&user_ns->binfmt_misc);
         |                                                 ^~
   include/linux/compiler_types.h:302:23: note: in definition of macro '__compiletime_assert'
     302 |                 if (!(condition))                                       \
         |                       ^~~~~~~~~
   include/linux/compiler_types.h:322:9: note: in expansion of macro '_compiletime_assert'
     322 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:325:9: note: in expansion of macro 'compiletime_assert'
     325 |         compiletime_assert(__native_word(t),                            \
         |         ^~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:325:28: note: in expansion of macro '__native_word'
     325 |         compiletime_assert(__native_word(t),                            \
         |                            ^~~~~~~~~~~~~
   arch/s390/include/asm/barrier.h:44:9: note: in expansion of macro 'compiletime_assert_atomic_type'
      44 |         compiletime_assert_atomic_type(*p);                             \
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/asm-generic/barrier.h:142:29: note: in expansion of macro '__smp_load_acquire'
     142 | #define smp_load_acquire(p) __smp_load_acquire(p)
         |                             ^~~~~~~~~~~~~~~~~~
   fs/binfmt_misc.c:86:24: note: in expansion of macro 'smp_load_acquire'
      86 |                 misc = smp_load_acquire(&user_ns->binfmt_misc);
         |                        ^~~~~~~~~~~~~~~~
>> fs/binfmt_misc.c:86:22: error: assignment to 'struct binfmt_misc *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion]
      86 |                 misc = smp_load_acquire(&user_ns->binfmt_misc);
         |                      ^
   In file included from include/linux/module.h:12,
                    from fs/binfmt_misc.c:14:
   fs/binfmt_misc.c: In function 'check_file':
   fs/binfmt_misc.c:112:31: error: invalid use of undefined type 'struct binfmt_misc'
     112 |         list_for_each(l, &misc->entries) {
         |                               ^~
   include/linux/list.h:571:21: note: in definition of macro 'list_for_each'
     571 |         for (pos = (head)->next; pos != (head); pos = pos->next)
         |                     ^~~~
   fs/binfmt_misc.c:112:31: error: invalid use of undefined type 'struct binfmt_misc'
     112 |         list_for_each(l, &misc->entries) {
         |                               ^~
   include/linux/list.h:571:42: note: in definition of macro 'list_for_each'
     571 |         for (pos = (head)->next; pos != (head); pos = pos->next)
         |                                          ^~~~
   fs/binfmt_misc.c: In function 'load_misc_binary':
   fs/binfmt_misc.c:170:18: error: invalid use of undefined type 'struct binfmt_misc'
     170 |         if (!misc->enabled)
         |                  ^~
   In file included from include/linux/spinlock.h:317,
                    from include/linux/mm_types.h:9,
                    from include/linux/buildid.h:5,
                    from include/linux/module.h:14,
                    from fs/binfmt_misc.c:14:
   fs/binfmt_misc.c:174:24: error: invalid use of undefined type 'struct binfmt_misc'
     174 |         read_lock(&misc->entries_lock);
         |                        ^~
   include/linux/rwlock.h:71:48: note: in definition of macro 'read_lock'
      71 | #define read_lock(lock)         _raw_read_lock(lock)
         |                                                ^~~~
   fs/binfmt_misc.c:179:26: error: invalid use of undefined type 'struct binfmt_misc'
     179 |         read_unlock(&misc->entries_lock);
         |                          ^~
   include/linux/rwlock.h:105:58: note: in definition of macro 'read_unlock'
     105 | #define read_unlock(lock)               _raw_read_unlock(lock)
         |                                                          ^~~~
   fs/binfmt_misc.c: In function 'bm_evict_inode':
   fs/binfmt_misc.c:610:33: error: invalid use of undefined type 'struct binfmt_misc'
     610 |                 write_lock(&misc->entries_lock);
         |                                 ^~
   include/linux/rwlock.h:70:49: note: in definition of macro 'write_lock'
      70 | #define write_lock(lock)        _raw_write_lock(lock)
         |                                                 ^~~~
   fs/binfmt_misc.c:612:35: error: invalid use of undefined type 'struct binfmt_misc'
     612 |                 write_unlock(&misc->entries_lock);
         |                                   ^~
   include/linux/rwlock.h:106:59: note: in definition of macro 'write_unlock'
     106 | #define write_unlock(lock)              _raw_write_unlock(lock)
         |                                                           ^~~~
   fs/binfmt_misc.c: In function 'bm_register_write':
   fs/binfmt_misc.c:757:25: error: invalid use of undefined type 'struct binfmt_misc'
     757 |         write_lock(&misc->entries_lock);
         |                         ^~
   include/linux/rwlock.h:70:49: note: in definition of macro 'write_lock'
      70 | #define write_lock(lock)        _raw_write_lock(lock)
         |                                                 ^~~~
   fs/binfmt_misc.c:758:33: error: invalid use of undefined type 'struct binfmt_misc'
     758 |         list_add(&e->list, &misc->entries);
         |                                 ^~
   In file included from include/linux/spinlock.h:317,
                    from include/linux/mm_types.h:9,
                    from include/linux/buildid.h:5,
                    from include/linux/module.h:14,
                    from fs/binfmt_misc.c:14:
   fs/binfmt_misc.c:759:27: error: invalid use of undefined type 'struct binfmt_misc'
     759 |         write_unlock(&misc->entries_lock);
         |                           ^~
   include/linux/rwlock.h:106:59: note: in definition of macro 'write_unlock'
     106 | #define write_unlock(lock)              _raw_write_unlock(lock)
         |                                                           ^~~~
   fs/binfmt_misc.c: In function 'bm_status_read':
   fs/binfmt_misc.c:793:17: error: invalid use of undefined type 'struct binfmt_misc'
     793 |         s = misc->enabled ? "enabled\n" : "disabled\n";
         |                 ^~
   fs/binfmt_misc.c: In function 'bm_status_write':
   fs/binfmt_misc.c:811:21: error: invalid use of undefined type 'struct binfmt_misc'
     811 |                 misc->enabled = false;
         |                     ^~
   fs/binfmt_misc.c:815:21: error: invalid use of undefined type 'struct binfmt_misc'
     815 |                 misc->enabled = true;
         |                     ^~
   fs/binfmt_misc.c:822:41: error: invalid use of undefined type 'struct binfmt_misc'
     822 |                 while (!list_empty(&misc->entries))
         |                                         ^~
   In file included from fs/binfmt_misc.c:13:
   fs/binfmt_misc.c:824:57: error: invalid use of undefined type 'struct binfmt_misc'
     824 |                                   list_first_entry(&misc->entries, Node, list));
         |                                                         ^~
   include/linux/kernel.h:494:33: note: in definition of macro 'container_of'
     494 |         void *__mptr = (void *)(ptr);                                   \
         |                                 ^~~
   include/linux/list.h:522:9: note: in expansion of macro 'list_entry'
     522 |         list_entry((ptr)->next, type, member)
         |         ^~~~~~~~~~
   fs/binfmt_misc.c:824:35: note: in expansion of macro 'list_first_entry'
     824 |                                   list_first_entry(&misc->entries, Node, list));
         |                                   ^~~~~~~~~~~~~~~~
   In file included from <command-line>:


vim +86 fs/binfmt_misc.c

    79	
    80	static struct binfmt_misc *binfmt_misc(struct user_namespace *user_ns)
    81	{
    82		while (user_ns) {
    83			struct binfmt_misc *misc;
    84	
    85			/* Pairs with smp_store_release() in bm_fill_super(). */
  > 86			misc = smp_load_acquire(&user_ns->binfmt_misc);
    87			if (misc)
    88				return misc;
    89	
    90			user_ns = user_ns->parent;
    91		}
    92	
    93		/*
    94		 * As the first user namespace is initialized with
    95		 * &init_binfmt_misc we should never come here.
    96		 */
    97		WARN_ON_ONCE(1);
    98		return ERR_PTR(-EINVAL);
    99	}
   100	

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

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