[block:io_uring-5.11 28/29] kernel/exit.c:780:2: error: implicit declaration of function 'io_uring_task_exit'; did you mean

[block:io_uring-5.11 28/29] kernel/exit.c:780:2: error: implicit declaration of function 'io_uring_task_exit'; did you mean

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git io_uring-5.11
head:   ff05644c4463b85ecb4156b52263f3be1b0a89e6
commit: 412b604b15a5de0deca159e0882749f1a9530a6a [28/29] io_uring: cancel all requests on task exit
config: m68k-randconfig-s031-20210121 (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-208-g46a52ca4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?id=412b604b15a5de0deca159e0882749f1a9530a6a
        git remote add block https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
        git fetch --no-tags block io_uring-5.11
        git checkout 412b604b15a5de0deca159e0882749f1a9530a6a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=m68k 

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 include/asm-generic/bug.h:5,
                    from arch/m68k/include/asm/bug.h:32,
                    from include/linux/bug.h:5,
                    from include/linux/mmdebug.h:5,
                    from include/linux/mm.h:9,
                    from kernel/exit.c:8:
   include/linux/scatterlist.h: In function 'sg_set_buf':
   arch/m68k/include/asm/page_no.h:33:50: warning: ordered comparison of pointer with null pointer [-Wextra]
      33 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
         |                                                  ^~
   include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
      78 | # define unlikely(x) __builtin_expect(!!(x), 0)
         |                                          ^
   include/linux/scatterlist.h:137:2: note: in expansion of macro 'BUG_ON'
     137 |  BUG_ON(!virt_addr_valid(buf));
         |  ^~~~~~
   include/linux/scatterlist.h:137:10: note: in expansion of macro 'virt_addr_valid'
     137 |  BUG_ON(!virt_addr_valid(buf));
         |          ^~~~~~~~~~~~~~~
   kernel/exit.c: In function 'do_exit':
>> kernel/exit.c:780:2: error: implicit declaration of function 'io_uring_task_exit'; did you mean 'io_uring_task_cancel'? [-Werror=implicit-function-declaration]
     780 |  io_uring_task_exit();
         |  ^~~~~~~~~~~~~~~~~~
         |  io_uring_task_cancel
   kernel/exit.c: At top level:
   kernel/exit.c:1763:13: warning: no previous prototype for 'abort' [-Wmissing-prototypes]
    1763 | __weak void abort(void)
         |             ^~~~~
   cc1: some warnings being treated as errors


vim +780 kernel/exit.c

   726	
   727	void __noreturn do_exit(long code)
   728	{
   729		struct task_struct *tsk = current;
   730		int group_dead;
   731	
   732		/*
   733		 * We can get here from a kernel oops, sometimes with preemption off.
   734		 * Start by checking for critical errors.
   735		 * Then fix up important state like USER_DS and preemption.
   736		 * Then do everything else.
   737		 */
   738	
   739		WARN_ON(blk_needs_flush_plug(tsk));
   740	
   741		if (unlikely(in_interrupt()))
   742			panic("Aiee, killing interrupt handler!");
   743		if (unlikely(!tsk->pid))
   744			panic("Attempted to kill the idle task!");
   745	
   746		/*
   747		 * If do_exit is called because this processes oopsed, it's possible
   748		 * that get_fs() was left as KERNEL_DS, so reset it to USER_DS before
   749		 * continuing. Amongst other possible reasons, this is to prevent
   750		 * mm_release()->clear_child_tid() from writing to a user-controlled
   751		 * kernel address.
   752		 */
   753		force_uaccess_begin();
   754	
   755		if (unlikely(in_atomic())) {
   756			pr_info("note: %s[%d] exited with preempt_count %d\n",
   757				current->comm, task_pid_nr(current),
   758				preempt_count());
   759			preempt_count_set(PREEMPT_ENABLED);
   760		}
   761	
   762		profile_task_exit(tsk);
   763		kcov_task_exit(tsk);
   764	
   765		ptrace_event(PTRACE_EVENT_EXIT, code);
   766	
   767		validate_creds_for_do_exit(tsk);
   768	
   769		/*
   770		 * We're taking recursive faults here in do_exit. Safest is to just
   771		 * leave this task alone and wait for reboot.
   772		 */
   773		if (unlikely(tsk->flags & PF_EXITING)) {
   774			pr_alert("Fixing recursive fault but reboot is needed!\n");
   775			futex_exit_recursive(tsk);
   776			set_current_state(TASK_UNINTERRUPTIBLE);
   777			schedule();
   778		}
   779	
 > 780		io_uring_task_exit();
   781		exit_signals(tsk);  /* sets PF_EXITING */
   782	
   783		/* sync mm's RSS info before statistics gathering */
   784		if (tsk->mm)
   785			sync_mm_rss(tsk->mm);
   786		acct_update_integrals(tsk);
   787		group_dead = atomic_dec_and_test(&tsk->signal->live);
   788		if (group_dead) {
   789			/*
   790			 * If the last thread of global init has exited, panic
   791			 * immediately to get a useable coredump.
   792			 */
   793			if (unlikely(is_global_init(tsk)))
   794				panic("Attempted to kill init! exitcode=0x%08x\n",
   795					tsk->signal->group_exit_code ?: (int)code);
   796	

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

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