tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost
head:   9991b95cb712cdd9a40240bde6274d5415476fb5
commit: 860c7fa9d6d433011e82a4f7f896893e914ce4a9 [11/22] fw_cfg: write 
vmcoreinfo details
config: i386-randconfig-c0-02011330 (attached as .config)
compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025
reproduce:
        git checkout 860c7fa9d6d433011e82a4f7f896893e914ce4a9
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/byteorder/little_endian.h:5:0,
                    from arch/x86/include/uapi/asm/byteorder.h:5,
                    from include/asm-generic/bitops/le.h:6,
                    from arch/x86/include/asm/bitops.h:518,
                    from include/linux/bitops.h:38,
                    from include/linux/kernel.h:11,
                    from include/linux/list.h:9,
                    from include/linux/module.h:9,
                    from drivers//firmware/qemu_fw_cfg.c:30:
   drivers//firmware/qemu_fw_cfg.c: In function 'write_vmcoreinfo':
>> drivers//firmware/qemu_fw_cfg.c:379:23: error: 'VMCOREINFO_NOTE_SIZE' 
>> undeclared (first use in this function); did you mean 'MEI_CL_NAME_SIZE'?
      .size = cpu_to_le32(VMCOREINFO_NOTE_SIZE),
                          ^
   include/uapi/linux/byteorder/little_endian.h:33:51: note: in definition of 
macro '__cpu_to_le32'
    #define __cpu_to_le32(x) ((__force __le32)(__u32)(x))
                                                      ^
>> drivers//firmware/qemu_fw_cfg.c:379:11: note: in expansion of macro 
>> 'cpu_to_le32'
      .size = cpu_to_le32(VMCOREINFO_NOTE_SIZE),
              ^~~~~~~~~~~
   drivers//firmware/qemu_fw_cfg.c:379:23: note: each undeclared identifier is 
reported only once for each function it appears in
      .size = cpu_to_le32(VMCOREINFO_NOTE_SIZE),
                          ^
   include/uapi/linux/byteorder/little_endian.h:33:51: note: in definition of 
macro '__cpu_to_le32'
    #define __cpu_to_le32(x) ((__force __le32)(__u32)(x))
                                                      ^
>> drivers//firmware/qemu_fw_cfg.c:379:11: note: in expansion of macro 
>> 'cpu_to_le32'
      .size = cpu_to_le32(VMCOREINFO_NOTE_SIZE),
              ^~~~~~~~~~~
>> drivers//firmware/qemu_fw_cfg.c:380:24: error: implicit declaration of 
>> function 'paddr_vmcoreinfo_note'; did you mean 'write_vmcoreinfo'? 
>> [-Werror=implicit-function-declaration]
      .paddr = cpu_to_le64(paddr_vmcoreinfo_note())
                           ^
   include/uapi/linux/byteorder/little_endian.h:31:51: note: in definition of 
macro '__cpu_to_le64'
    #define __cpu_to_le64(x) ((__force __le64)(__u64)(x))
                                                      ^
>> drivers//firmware/qemu_fw_cfg.c:380:12: note: in expansion of macro 
>> 'cpu_to_le64'
      .paddr = cpu_to_le64(paddr_vmcoreinfo_note())
               ^~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +379 drivers//firmware/qemu_fw_cfg.c

   360  
   361  #ifdef CONFIG_CRASH_CORE
   362  static ssize_t write_vmcoreinfo(struct device *dev, const struct 
fw_cfg_file *f)
   363  {
   364          struct vmci {
   365                  __le16 host_format;
   366                  __le16 guest_format;
   367                  __le32 size;
   368                  __le64 paddr;
   369          } __packed;
   370          static struct vmci *data;
   371          ssize_t ret;
   372  
   373          data = kmalloc(sizeof(struct vmci), GFP_KERNEL);
   374          if (!data)
   375                  return -ENOMEM;
   376  
   377          *data = (struct vmci) {
   378                  .guest_format = cpu_to_le16(VMCOREINFO_FORMAT_ELF),
 > 379                  .size = cpu_to_le32(VMCOREINFO_NOTE_SIZE),
 > 380                  .paddr = cpu_to_le64(paddr_vmcoreinfo_note())
   381          };
   382          /* spare ourself reading host format support for now since we
   383           * don't know what else to format - host may ignore ours
   384           */
   385          ret = fw_cfg_write_blob(dev, f->select, data, 0, sizeof(struct 
vmci));
   386  
   387          kfree(data);
   388          return ret;
   389  }
   390  #endif /* CONFIG_CRASH_CORE */
   391  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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