Re: [PATCH for-rc v2 5/6] IB/mlx4: Add support for REJ due to timeout

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

[-- Attachment #1: Type: text/plain, Size: 2462 bytes --]

Hi "Håkon,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on rdma/for-next]
[also build test WARNING on v5.8 next-20200803]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/H-kon-Bugge/Add-CM-packets-missing-and-harden-the-proxying/20200803-142244
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next
config: x86_64-randconfig-s021-20200804 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-14) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.2-117-g8c7aee71-dirty
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 

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


sparse warnings: (new ones prefixed by >>)

>> drivers/infiniband/hw/mlx4/cm.c:496:48: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct rej_tmout_entry *item @@     got void [noderef] __rcu * @@
>> drivers/infiniband/hw/mlx4/cm.c:496:48: sparse:     expected struct rej_tmout_entry *item
   drivers/infiniband/hw/mlx4/cm.c:496:48: sparse:     got void [noderef] __rcu *

vim +496 drivers/infiniband/hw/mlx4/cm.c

   486	
   487	static void rej_tmout_tree_cleanup(struct mlx4_ib_sriov *sriov, int slave)
   488	{
   489		struct radix_tree_iter iter;
   490		bool flush_needed = false;
   491		__rcu void **slot;
   492		int cnt = 0;
   493	
   494		mutex_lock(&sriov->rej_tmout_lock);
   495		radix_tree_for_each_slot(slot, &sriov->rej_tmout_root, &iter, 0) {
 > 496			struct rej_tmout_entry *item = *slot;
   497	
   498			if (slave < 0 || slave == item->slave) {
   499				mod_delayed_work(system_wq, &item->timeout, 0);
   500				flush_needed = true;
   501				++cnt;
   502			}
   503		}
   504		mutex_unlock(&sriov->rej_tmout_lock);
   505	
   506		if (flush_needed) {
   507			flush_scheduled_work();
   508			pr_debug("Deleted %d entries in radix_tree for slave %d during cleanup\n",
   509				 slave, cnt);
   510		}
   511	}
   512	

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

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 38108 bytes --]