[linux-stable-rc:linux-4.4.y 9520/9999] arch/mips/kernel/crash.c:80:6: error: no previous prototype for 'crash_smp_send_stop'

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.4.y
head:   95a3867e897abd7811196123f81a119a75aba863
commit: 95f179ffff039f428371133f76dda1384b527fcb [9520/9999] mips/panic: replace smp_send_stop() with kdump friendly version in panic path
config: mips-randconfig-p002-20210209 (attached as .config)
compiler: mips64-linux-gcc (GCC) 7.5.0
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/stable/linux-stable-rc.git/commit/?id=95f179ffff039f428371133f76dda1384b527fcb
        git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
        git fetch --no-tags linux-stable-rc linux-4.4.y
        git checkout 95f179ffff039f428371133f76dda1384b527fcb
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 make.cross ARCH=mips 

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

All errors (new ones prefixed by >>):

   include/asm-generic/bug.h:151:25: note: in definition of macro 'WARN_ON'
     int __ret_warn_on = !!(condition);    \
                            ^~~~~~~~~
   include/linux/cpumask.h:117:2: note: in expansion of macro 'WARN_ON_ONCE'
     WARN_ON_ONCE(cpu >= nr_cpumask_bits);
     ^~~~~~~~~~~~
   In file included from arch/mips/kernel/linux32.c:17:0:
   include/linux/skbuff.h: In function 'skb_add_data':
   include/linux/skbuff.h:2675:23: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
             &csum, from) == copy) {
                          ^~
   include/linux/skbuff.h:2679:60: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     } else if (copy_from_iter(skb_put(skb, copy), copy, from) == copy)
                                                               ^~
   include/linux/skbuff.h: In function 'skb_can_coalesce':
   include/linux/skbuff.h:2693:14: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
             off == frag->page_offset + skb_frag_size(frag);
                 ^~
   include/linux/skbuff.h: In function 'memcpy_from_msg':
   include/linux/skbuff.h:2921:51: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     return copy_from_iter(data, len, &msg->msg_iter) == len ? 0 : -EFAULT;
                                                      ^~
   include/linux/skbuff.h: In function 'memcpy_to_msg':
   include/linux/skbuff.h:2926:49: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     return copy_to_iter(data, len, &msg->msg_iter) == len ? 0 : -EFAULT;
                                                    ^~
   In file included from include/net/inet_frag.h:4:0,
                    from include/net/netns/ipv4.h:9,
                    from include/net/net_namespace.h:17,
                    from include/linux/netdevice.h:43,
                    from include/net/sch_generic.h:4,
                    from include/linux/filter.h:16,
                    from arch/mips/kernel/linux32.c:18:
   include/linux/rhashtable.h: In function 'rht_grow_above_75':
   include/linux/rhashtable.h:264:34: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     return atomic_read(&ht->nelems) > (tbl->size / 4 * 3) &&
                                     ^
   include/linux/rhashtable.h: In function 'rht_shrink_below_30':
   include/linux/rhashtable.h:277:34: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     return atomic_read(&ht->nelems) < (tbl->size * 3 / 10) &&
                                     ^
   include/linux/rhashtable.h: In function 'rht_grow_above_100':
   include/linux/rhashtable.h:289:34: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     return atomic_read(&ht->nelems) > tbl->size &&
                                     ^
   include/linux/rhashtable.h: In function 'rht_grow_above_max':
   include/linux/rhashtable.h:302:34: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
            atomic_read(&ht->nelems) >= ht->p.insecure_max_entries;
                                     ^~
   In file included from include/net/sch_generic.h:4:0,
                    from include/linux/filter.h:16,
                    from arch/mips/kernel/linux32.c:18:
   include/linux/netdevice.h: In function '__skb_gro_checksum_validate_needed':
   include/linux/netdevice.h:2389:34: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
      skb_checksum_start_offset(skb) <
                                     ^
   In file included from arch/mips/include/asm/bug.h:41:0,
                    from include/linux/bug.h:4,
                    from include/linux/mmdebug.h:4,
                    from include/linux/mm.h:8,
                    from arch/mips/kernel/linux32.c:8:
   include/linux/netdevice.h: In function 'get_netdev_rx_queue_index':
   include/linux/netdevice.h:3027:15: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     BUG_ON(index >= dev->num_rx_queues);
                  ^
   include/asm-generic/bug.h:146:36: note: in definition of macro 'BUG_ON'
    #define BUG_ON(condition) do { if (condition) BUG(); } while (0)
                                       ^~~~~~~~~
   In file included from include/net/sch_generic.h:4:0,
                    from include/linux/filter.h:16,
                    from arch/mips/kernel/linux32.c:18:
   include/linux/netdevice.h: In function 'netif_msg_init':
   include/linux/netdevice.h:3301:37: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     if (debug_value < 0 || debug_value >= (sizeof(u32) * 8))
                                        ^~
   In file included from include/net/rtnetlink.h:5:0,
                    from include/net/sch_generic.h:12,
                    from include/linux/filter.h:16,
                    from arch/mips/kernel/linux32.c:18:
   include/net/netlink.h: In function 'nlmsg_ok':
   include/net/netlink.h:337:18: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
      nlh->nlmsg_len <= remaining);
                     ^~
   include/net/netlink.h: In function 'nlmsg_parse':
   include/net/netlink.h:372:21: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen))
                        ^
   include/net/netlink.h: In function 'nlmsg_validate':
   include/net/netlink.h:405:21: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen))
                        ^
   In file included from include/net/sch_generic.h:12:0,
                    from include/linux/filter.h:16,
                    from arch/mips/kernel/linux32.c:18:
   include/net/rtnetlink.h: In function 'rtnl_msg_family':
   include/net/rtnetlink.h:20:21: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))
                        ^~
   In file included from arch/mips/kernel/linux32.c:7:0:
   include/net/sch_generic.h: In function 'qdisc_cb_private_validate':
>> include/net/sch_generic.h:267:33: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     BUILD_BUG_ON(sizeof(qcb->data) < sz);
                                    ^
   include/linux/compiler.h:485:19: note: in definition of macro '__compiletime_assert'
      bool __cond = !(condition);    \
                      ^~~~~~~~~
   include/linux/compiler.h:505:2: note: in expansion of macro '_compiletime_assert'
     _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
     ^~~~~~~~~~~~~~~~~~~
   include/linux/bug.h:50:37: note: in expansion of macro 'compiletime_assert'
    #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                        ^~~~~~~~~~~~~~~~~~
   include/linux/bug.h:74:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
     BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
     ^~~~~~~~~~~~~~~~
   include/net/sch_generic.h:267:2: note: in expansion of macro 'BUILD_BUG_ON'
     BUILD_BUG_ON(sizeof(qcb->data) < sz);
     ^~~~~~~~~~~~
   In file included from arch/mips/kernel/linux32.c:18:0:
   include/linux/filter.h: In function 'bpf_needs_clear_a':
>> include/linux/filter.h:517:16: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
      if (first->k == SKF_AD_OFF + SKF_AD_ALU_XOR_X)
                   ^~
   In file included from arch/mips/kernel/linux32.c:37:0:
   include/net/sock.h: In function 'skb_do_copy_data_nocache':
   include/net/sock.h:1827:54: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
      if (csum_and_copy_from_iter(to, copy, &csum, from) != copy)
                                                         ^~
   include/net/sock.h:1831:46: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
      if (copy_from_iter_nocache(to, copy, from) != copy)
                                                 ^~
   include/net/sock.h:1833:44: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     } else if (copy_from_iter(to, copy, from) != copy)
                                               ^~
   arch/mips/kernel/linux32.c: At top level:
   arch/mips/kernel/linux32.c:136:20: error: no previous prototype for 'sys32_readahead' [-Werror=missing-prototypes]
    asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
                       ^~~~~~~~~~~~~~~
   arch/mips/kernel/linux32.c:142:17: error: no previous prototype for 'sys32_sync_file_range' [-Werror=missing-prototypes]
    asmlinkage long sys32_sync_file_range(int fd, int __pad,
                    ^~~~~~~~~~~~~~~~~~~~~
   arch/mips/kernel/linux32.c:152:17: error: no previous prototype for 'sys32_fadvise64_64' [-Werror=missing-prototypes]
    asmlinkage long sys32_fadvise64_64(int fd, int __pad,
                    ^~~~~~~~~~~~~~~~~~
   arch/mips/kernel/linux32.c:162:17: error: no previous prototype for 'sys32_fallocate' [-Werror=missing-prototypes]
    asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2,
                    ^~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors
--
   In file included from arch/mips/include/asm/bug.h:41:0,
                    from include/linux/bug.h:4,
                    from include/linux/cpumask.h:12,
                    from include/linux/smp.h:12,
                    from arch/mips/kernel/crash.c:2:
   include/linux/cpumask.h: In function 'cpumask_check':
   include/linux/cpumask.h:117:19: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     WARN_ON_ONCE(cpu >= nr_cpumask_bits);
                      ^
   include/asm-generic/bug.h:151:25: note: in definition of macro 'WARN_ON'
     int __ret_warn_on = !!(condition);    \
                            ^~~~~~~~~
   include/linux/cpumask.h:117:2: note: in expansion of macro 'WARN_ON_ONCE'
     WARN_ON_ONCE(cpu >= nr_cpumask_bits);
     ^~~~~~~~~~~~
   arch/mips/kernel/crash.c: At top level:
>> arch/mips/kernel/crash.c:80:6: error: no previous prototype for 'crash_smp_send_stop' [-Werror=missing-prototypes]
    void crash_smp_send_stop(void)
         ^~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/crash_smp_send_stop +80 arch/mips/kernel/crash.c

    78	
    79	/* Override the weak function in kernel/panic.c */
  > 80	void crash_smp_send_stop(void)
    81	{
    82		if (_crash_smp_send_stop)
    83			_crash_smp_send_stop();
    84	
    85		crash_kexec_prepare_cpus();
    86	}
    87	

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

Attachment: .config.gz
Description: application/gzip


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