[mhiramat:kprobes/kretprobe-stackfix 8/10] arch/sparc/include/asm/ptrace.h:67:15: warning: assignment to 'long unsigned int' from 'kprobe_opcode_t {aka 'unsigned int makes integer from pointer without a cast

[mhiramat:kprobes/kretprobe-stackfix 8/10] arch/sparc/include/asm/ptrace.h:67:15: warning: assignment to 'long unsigned int' from 'kprobe_opcode_t {aka 'unsigned int makes integer from pointer without a cast

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git kprobes/kretprobe-stackfix
head:   6e2b8966c87adc1be0fb4a386fb24ae438f4cb79
commit: 663b1b4caed9e4b0ad1be80b30851e68fb9a40eb [8/10] kprobes: Setup instruction pointer in __kretprobe_trampoline_handler
config: sparc-randconfig-r001-20210316 (attached as .config)
compiler: sparc64-linux-gcc (GCC) 9.3.0
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/mhiramat/linux.git/commit/?id=663b1b4caed9e4b0ad1be80b30851e68fb9a40eb
        git remote add mhiramat https://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git
        git fetch --no-tags mhiramat kprobes/kretprobe-stackfix
        git checkout 663b1b4caed9e4b0ad1be80b30851e68fb9a40eb
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sparc 

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

All warnings (new ones prefixed by >>):

   In file included from arch/sparc/include/asm/thread_info_64.h:31,
                    from arch/sparc/include/asm/thread_info.h:5,
                    from include/linux/thread_info.h:58,
                    from arch/sparc/include/asm/current.h:15,
                    from include/linux/mutex.h:14,
                    from include/linux/notifier.h:14,
                    from include/linux/kprobes.h:22,
                    from kernel/kprobes.c:21:
   kernel/kprobes.c: In function '__kretprobe_trampoline_handler':
>> arch/sparc/include/asm/ptrace.h:67:15: warning: assignment to 'long unsigned int' from 'kprobe_opcode_t *' {aka 'unsigned int *'} makes integer from pointer without a cast [-Wint-conversion]
      67 |   (regs)->tpc = (val); \
         |               ^
   kernel/kprobes.c:1901:2: note: in expansion of macro 'instruction_pointer_set'
    1901 |  instruction_pointer_set(regs, correct_ret_addr);
         |  ^~~~~~~~~~~~~~~~~~~~~~~
   arch/sparc/include/asm/ptrace.h:68:16: warning: assignment to 'long unsigned int' from 'kprobe_opcode_t *' {aka 'unsigned int *'} makes integer from pointer without a cast [-Wint-conversion]
      68 |   (regs)->tnpc = (val)+4; \
         |                ^
   kernel/kprobes.c:1901:2: note: in expansion of macro 'instruction_pointer_set'
    1901 |  instruction_pointer_set(regs, correct_ret_addr);
         |  ^~~~~~~~~~~~~~~~~~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for FRAME_POINTER
   Depends on DEBUG_KERNEL && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS || MCOUNT
   Selected by
   - LATENCYTOP && DEBUG_KERNEL && STACKTRACE_SUPPORT && PROC_FS && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86
   - LOCKDEP && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT && !MIPS && !PPC && !ARM && !S390 && !MICROBLAZE && !ARC && !X86


vim +67 arch/sparc/include/asm/ptrace.h

f3ec38d5135ca4 Sam Ravnborg 2009-01-02  62  
dff933da765fd4 Al Viro      2012-09-26  63  #define force_successful_syscall_return() set_thread_noerror(1)
f3ec38d5135ca4 Sam Ravnborg 2009-01-02  64  #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
f3ec38d5135ca4 Sam Ravnborg 2009-01-02  65  #define instruction_pointer(regs) ((regs)->tpc)
e8f4aa6087fa80 Allen Pais   2016-10-13  66  #define instruction_pointer_set(regs, val) do { \
e8f4aa6087fa80 Allen Pais   2016-10-13 @67  		(regs)->tpc = (val); \
e8f4aa6087fa80 Allen Pais   2016-10-13  68  		(regs)->tnpc = (val)+4; \
e8f4aa6087fa80 Allen Pais   2016-10-13  69  	} while (0)
f3ec38d5135ca4 Sam Ravnborg 2009-01-02  70  #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
d7e7528bcd456f Eric Paris   2012-01-03  71  static inline int is_syscall_success(struct pt_regs *regs)
d7e7528bcd456f Eric Paris   2012-01-03  72  {
d7e7528bcd456f Eric Paris   2012-01-03  73  	return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
d7e7528bcd456f Eric Paris   2012-01-03  74  }
d7e7528bcd456f Eric Paris   2012-01-03  75  

:::::: The code at line 67 was first introduced by commit
:::::: e8f4aa6087fa80732382881ef7c0c96733bb1984 sparc64:Support User Probes for sparc

:::::: TO: Allen Pais <allen.pais@oracle.com>
:::::: CC: David S. Miller <davem@davemloft.net>

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

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