[oracle-dtrace:v2/6.5 10/13] drivers/virt/acrn/irqfd.c:146:32: error: incompatible function pointer types passing 'void (struct file *, wait_queue_head_t *, poll_table *)' (aka 'void (struct file *, struct wait_queue_head *, struct poll_table_struct *)') to parameter of type 'poll_qu...

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/oracle/dtrace-linux-kernel v2/6.5
head:   1120d1c598d4ae2d08278969b9001a866aa8273a
commit: 051cfd2102807119e31bdd4947d18388b3df5fd3 [10/13] waitfd: new syscall implementing waitpid() over fds
config: x86_64-randconfig-013-20230907 (https://download.01.org/0day-ci/archive/20230907/202309070606.cYhMhndO-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230907/202309070606.cYhMhndO-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309070606.cYhMhndO-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/virt/acrn/irqfd.c:146:32: error: incompatible function pointer types passing 'void (struct file *, wait_queue_head_t *, poll_table *)' (aka 'void (struct file *, struct wait_queue_head *, struct poll_table_struct *)') to parameter of type 'poll_queue_proc' (aka 'void (*)(struct file *, struct wait_queue_head *, struct poll_table_struct *, unsigned long)') [-Wincompatible-function-pointer-types]
           init_poll_funcptr(&irqfd->pt, hsm_irqfd_poll_func);
                                         ^~~~~~~~~~~~~~~~~~~
   include/linux/poll.h:82:70: note: passing argument to parameter 'qproc' here
   static inline void init_poll_funcptr(poll_table *pt, poll_queue_proc qproc)
                                                                        ^
   1 error generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for VMLINUX_MAP
   Depends on [n]: EXPERT [=n]
   Selected by [y]:
   - KALLMODSYMS [=y] && KALLSYMS [=y]


vim +146 drivers/virt/acrn/irqfd.c

aa3b483ff1d71c Shuo Liu    2021-02-07  104  
aa3b483ff1d71c Shuo Liu    2021-02-07  105  /*
aa3b483ff1d71c Shuo Liu    2021-02-07  106   * Assign an eventfd to a VM and create a HSM irqfd associated with the
aa3b483ff1d71c Shuo Liu    2021-02-07  107   * eventfd. The properties of the HSM irqfd are built from a &struct
aa3b483ff1d71c Shuo Liu    2021-02-07  108   * acrn_irqfd.
aa3b483ff1d71c Shuo Liu    2021-02-07  109   */
aa3b483ff1d71c Shuo Liu    2021-02-07  110  static int acrn_irqfd_assign(struct acrn_vm *vm, struct acrn_irqfd *args)
aa3b483ff1d71c Shuo Liu    2021-02-07  111  {
aa3b483ff1d71c Shuo Liu    2021-02-07  112  	struct eventfd_ctx *eventfd = NULL;
aa3b483ff1d71c Shuo Liu    2021-02-07  113  	struct hsm_irqfd *irqfd, *tmp;
dcf9625f2adf33 Yejune Deng 2021-02-21  114  	__poll_t events;
aa3b483ff1d71c Shuo Liu    2021-02-07  115  	struct fd f;
aa3b483ff1d71c Shuo Liu    2021-02-07  116  	int ret = 0;
aa3b483ff1d71c Shuo Liu    2021-02-07  117  
aa3b483ff1d71c Shuo Liu    2021-02-07  118  	irqfd = kzalloc(sizeof(*irqfd), GFP_KERNEL);
aa3b483ff1d71c Shuo Liu    2021-02-07  119  	if (!irqfd)
aa3b483ff1d71c Shuo Liu    2021-02-07  120  		return -ENOMEM;
aa3b483ff1d71c Shuo Liu    2021-02-07  121  
aa3b483ff1d71c Shuo Liu    2021-02-07  122  	irqfd->vm = vm;
aa3b483ff1d71c Shuo Liu    2021-02-07  123  	memcpy(&irqfd->msi, &args->msi, sizeof(args->msi));
aa3b483ff1d71c Shuo Liu    2021-02-07  124  	INIT_LIST_HEAD(&irqfd->list);
aa3b483ff1d71c Shuo Liu    2021-02-07  125  	INIT_WORK(&irqfd->shutdown, hsm_irqfd_shutdown_work);
aa3b483ff1d71c Shuo Liu    2021-02-07  126  
aa3b483ff1d71c Shuo Liu    2021-02-07  127  	f = fdget(args->fd);
aa3b483ff1d71c Shuo Liu    2021-02-07  128  	if (!f.file) {
aa3b483ff1d71c Shuo Liu    2021-02-07  129  		ret = -EBADF;
aa3b483ff1d71c Shuo Liu    2021-02-07  130  		goto out;
aa3b483ff1d71c Shuo Liu    2021-02-07  131  	}
aa3b483ff1d71c Shuo Liu    2021-02-07  132  
aa3b483ff1d71c Shuo Liu    2021-02-07  133  	eventfd = eventfd_ctx_fileget(f.file);
aa3b483ff1d71c Shuo Liu    2021-02-07  134  	if (IS_ERR(eventfd)) {
aa3b483ff1d71c Shuo Liu    2021-02-07  135  		ret = PTR_ERR(eventfd);
aa3b483ff1d71c Shuo Liu    2021-02-07  136  		goto fail;
aa3b483ff1d71c Shuo Liu    2021-02-07  137  	}
aa3b483ff1d71c Shuo Liu    2021-02-07  138  
aa3b483ff1d71c Shuo Liu    2021-02-07  139  	irqfd->eventfd = eventfd;
aa3b483ff1d71c Shuo Liu    2021-02-07  140  
aa3b483ff1d71c Shuo Liu    2021-02-07  141  	/*
aa3b483ff1d71c Shuo Liu    2021-02-07  142  	 * Install custom wake-up handling to be notified whenever underlying
aa3b483ff1d71c Shuo Liu    2021-02-07  143  	 * eventfd is signaled.
aa3b483ff1d71c Shuo Liu    2021-02-07  144  	 */
aa3b483ff1d71c Shuo Liu    2021-02-07  145  	init_waitqueue_func_entry(&irqfd->wait, hsm_irqfd_wakeup);
aa3b483ff1d71c Shuo Liu    2021-02-07 @146  	init_poll_funcptr(&irqfd->pt, hsm_irqfd_poll_func);
aa3b483ff1d71c Shuo Liu    2021-02-07  147  
aa3b483ff1d71c Shuo Liu    2021-02-07  148  	mutex_lock(&vm->irqfds_lock);
aa3b483ff1d71c Shuo Liu    2021-02-07  149  	list_for_each_entry(tmp, &vm->irqfds, list) {
aa3b483ff1d71c Shuo Liu    2021-02-07  150  		if (irqfd->eventfd != tmp->eventfd)
aa3b483ff1d71c Shuo Liu    2021-02-07  151  			continue;
aa3b483ff1d71c Shuo Liu    2021-02-07  152  		ret = -EBUSY;
aa3b483ff1d71c Shuo Liu    2021-02-07  153  		mutex_unlock(&vm->irqfds_lock);
aa3b483ff1d71c Shuo Liu    2021-02-07  154  		goto fail;
aa3b483ff1d71c Shuo Liu    2021-02-07  155  	}
aa3b483ff1d71c Shuo Liu    2021-02-07  156  	list_add_tail(&irqfd->list, &vm->irqfds);
aa3b483ff1d71c Shuo Liu    2021-02-07  157  	mutex_unlock(&vm->irqfds_lock);
aa3b483ff1d71c Shuo Liu    2021-02-07  158  
aa3b483ff1d71c Shuo Liu    2021-02-07  159  	/* Check the pending event in this stage */
dcf9625f2adf33 Yejune Deng 2021-02-21  160  	events = vfs_poll(f.file, &irqfd->pt);
aa3b483ff1d71c Shuo Liu    2021-02-07  161  
a758b7c4c6f21f Yejune Deng 2021-03-10  162  	if (events & EPOLLIN)
aa3b483ff1d71c Shuo Liu    2021-02-07  163  		acrn_irqfd_inject(irqfd);
aa3b483ff1d71c Shuo Liu    2021-02-07  164  
aa3b483ff1d71c Shuo Liu    2021-02-07  165  	fdput(f);
aa3b483ff1d71c Shuo Liu    2021-02-07  166  	return 0;
aa3b483ff1d71c Shuo Liu    2021-02-07  167  fail:
aa3b483ff1d71c Shuo Liu    2021-02-07  168  	if (eventfd && !IS_ERR(eventfd))
aa3b483ff1d71c Shuo Liu    2021-02-07  169  		eventfd_ctx_put(eventfd);
aa3b483ff1d71c Shuo Liu    2021-02-07  170  
aa3b483ff1d71c Shuo Liu    2021-02-07  171  	fdput(f);
aa3b483ff1d71c Shuo Liu    2021-02-07  172  out:
aa3b483ff1d71c Shuo Liu    2021-02-07  173  	kfree(irqfd);
aa3b483ff1d71c Shuo Liu    2021-02-07  174  	return ret;
aa3b483ff1d71c Shuo Liu    2021-02-07  175  }
aa3b483ff1d71c Shuo Liu    2021-02-07  176  

:::::: The code at line 146 was first introduced by commit
:::::: aa3b483ff1d71c50b33db154048dff9a8f08ac71 virt: acrn: Introduce irqfd

:::::: TO: Shuo Liu <shuo.a.liu@intel.com>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki