Re: [PATCH net-next v2] bridge: mrp: Extend MRP netlink interface with IFLA_BRIDGE_MRP_CLEAR

From: kernel test robot
Date: Thu Jun 25 2020 - 08:04:10 EST

Hi Horatiu,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]

url: https://github.com/0day-ci/linux/commits/Horatiu-Vultur/bridge-mrp-Extend-MRP-netlink-interface-with-IFLA_BRIDGE_MRP_CLEAR/20200625-150941
base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 147373d968f1c1b5d6bb71e4e8b7495eeb9cdcae
config: i386-randconfig-s001-20200624 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.2-dirty
# save the attached .config to linux build tree
make W=1 C=1 ARCH=i386 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

net/bridge/br_mrp.c:106:18: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got restricted __be16 [usertype] @@
net/bridge/br_mrp.c:106:18: sparse: expected unsigned short [usertype]
net/bridge/br_mrp.c:106:18: sparse: got restricted __be16 [usertype]
net/bridge/br_mrp.c:281:23: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected struct list_head *entry @@ got struct list_head [noderef] * @@
net/bridge/br_mrp.c:281:23: sparse: expected struct list_head *entry
net/bridge/br_mrp.c:281:23: sparse: got struct list_head [noderef] *
net/bridge/br_mrp.c:332:28: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected struct list_head *new @@ got struct list_head [noderef] * @@
net/bridge/br_mrp.c:332:28: sparse: expected struct list_head *new
net/bridge/br_mrp.c:332:28: sparse: got struct list_head [noderef] *
net/bridge/br_mrp.c:332:40: sparse: sparse: incorrect type in argument 2 (different modifiers) @@ expected struct list_head *head @@ got struct list_head [noderef] * @@
net/bridge/br_mrp.c:332:40: sparse: expected struct list_head *head
net/bridge/br_mrp.c:332:40: sparse: got struct list_head [noderef] *
net/bridge/br_mrp.c:691:29: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected struct list_head const *head @@ got struct list_head [noderef] * @@
net/bridge/br_mrp.c:691:29: sparse: expected struct list_head const *head
net/bridge/br_mrp.c:691:29: sparse: got struct list_head [noderef] *
>> net/bridge/br_mrp.c:383:9: sparse: sparse: dereference of noderef expression
>> net/bridge/br_mrp.c:383:9: sparse: sparse: dereference of noderef expression
>> net/bridge/br_mrp.c:383:9: sparse: sparse: dereference of noderef expression

vim +383 net/bridge/br_mrp.c

284
285 /* Adds a new MRP instance.
286 * note: called under rtnl_lock
287 */
288 int br_mrp_add(struct net_bridge *br, struct br_mrp_instance *instance)
289 {
290 struct net_bridge_port *p;
291 struct br_mrp *mrp;
292 int err;
293
294 /* If the ring exists, it is not possible to create another one with the
295 * same ring_id
296 */
297 mrp = br_mrp_find_id(br, instance->ring_id);
298 if (mrp)
299 return -EINVAL;
300
301 if (!br_mrp_get_port(br, instance->p_ifindex) ||
302 !br_mrp_get_port(br, instance->s_ifindex))
303 return -EINVAL;
304
305 /* It is not possible to have the same port part of multiple rings */
306 if (!br_mrp_unique_ifindex(br, instance->p_ifindex) ||
307 !br_mrp_unique_ifindex(br, instance->s_ifindex))
308 return -EINVAL;
309
310 mrp = kzalloc(sizeof(*mrp), GFP_KERNEL);
311 if (!mrp)
312 return -ENOMEM;
313
314 mrp->ring_id = instance->ring_id;
315 mrp->prio = instance->prio;
316
317 p = br_mrp_get_port(br, instance->p_ifindex);
318 spin_lock_bh(&br->lock);
319 p->state = BR_STATE_FORWARDING;
320 p->flags |= BR_MRP_AWARE;
321 spin_unlock_bh(&br->lock);
322 rcu_assign_pointer(mrp->p_port, p);
323
324 p = br_mrp_get_port(br, instance->s_ifindex);
325 spin_lock_bh(&br->lock);
326 p->state = BR_STATE_FORWARDING;
327 p->flags |= BR_MRP_AWARE;
328 spin_unlock_bh(&br->lock);
329 rcu_assign_pointer(mrp->s_port, p);
330
331 INIT_DELAYED_WORK(&mrp->test_work, br_mrp_test_work_expired);
> 332 list_add_tail_rcu(&mrp->list, &br->mrp_list);
333
334 err = br_mrp_switchdev_add(br, mrp);
335 if (err)
336 goto delete_mrp;
337
338 return 0;
339
340 delete_mrp:
341 br_mrp_del_impl(br, mrp);
342
343 return err;
344 }
345
346 /* Deletes the MRP instance from which the port is part of
347 * note: called under rtnl_lock
348 */
349 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p)
350 {
351 struct br_mrp *mrp = br_mrp_find_port(br, p);
352
353 /* If the port is not part of a MRP instance just bail out */
354 if (!mrp)
355 return;
356
357 br_mrp_del_impl(br, mrp);
358 }
359
360 /* Deletes existing MRP instance based on ring_id
361 * note: called under rtnl_lock
362 */
363 int br_mrp_del(struct net_bridge *br, struct br_mrp_instance *instance)
364 {
365 struct br_mrp *mrp = br_mrp_find_id(br, instance->ring_id);
366
367 if (!mrp)
368 return -EINVAL;
369
370 br_mrp_del_impl(br, mrp);
371
372 return 0;
373 }
374
375 /* Deletes all MRP instances on the bridge
376 * note: called under rtnl_lock
377 */
378 int br_mrp_clear(struct net_bridge *br)
379 {
380 struct br_mrp *mrp;
381 struct br_mrp *tmp;
382
> 383 list_for_each_entry_safe(mrp, tmp, &br->mrp_list, list) {
384 br_mrp_del_impl(br, mrp);
385 }
386
387 return 0;
388 }
389

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

Attachment: .config.gz
Description: application/gzip