From: kernel test robot <lkp@intel.com>
To: cros-kernel-buildreports@googlegroups.com
Cc: oe-kbuild-all@lists.linux.dev
Subject: [android-common:android13-5.15-2024-11 2/2] include/linux/rcupdate.h:391:9: error: dereferencing pointer to incomplete type 'struct userfaultfd_ctx'
Date: Sat, 22 Mar 2025 07:30:18 +0800 [thread overview]
Message-ID: <202503220753.M2DGFO52-lkp@intel.com> (raw)
tree: https://android.googlesource.com/kernel/common android13-5.15-2024-11
head: 705f06af57bc55a7f9c751dc308faaa3ee40b93e
commit: 9b613572d6246da9b616f34e4a0e0b5ac74b2dd0 [2/2] ANDROID: userfaultfd: allow SPF for UFFD_FEATURE_SIGBUS on private+anon
config: arm64-randconfig-003-20250322 (https://download.01.org/0day-ci/archive/20250322/202503220753.M2DGFO52-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250322/202503220753.M2DGFO52-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/202503220753.M2DGFO52-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from include/linux/kthread.h:6,
from include/trace/events/sched.h:8,
from kernel/sched/core.c:10:
include/linux/userfaultfd_k.h: In function 'is_mergeable_vm_userfaultfd_ctx':
>> include/linux/rcupdate.h:391:9: error: dereferencing pointer to incomplete type 'struct userfaultfd_ctx'
typeof(*p) *_________p1 = (typeof(*p) *__force)READ_ONCE(p); \
^
include/linux/rcupdate.h:501:31: note: in expansion of macro '__rcu_access_pointer'
#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu)
^~~~~~~~~~~~~~~~~~~~
include/linux/userfaultfd_k.h:81:9: note: in expansion of macro 'rcu_access_pointer'
return rcu_access_pointer(vma->vm_userfaultfd_ctx.ctx) == vm_ctx.ctx;
^~~~~~~~~~~~~~~~~~
kernel/sched/core.c: At top level:
kernel/sched/core.c:3532:6: warning: no previous prototype for 'sched_set_stop_task' [-Wmissing-prototypes]
void sched_set_stop_task(int cpu, struct task_struct *stop)
^~~~~~~~~~~~~~~~~~~
kernel/sched/core.c:4844:6: warning: no previous prototype for '__balance_callbacks' [-Wmissing-prototypes]
void __balance_callbacks(struct rq *rq)
^~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from kernel/sched/sched.h:5,
from kernel/sched/idle.c:9:
include/linux/userfaultfd_k.h: In function 'is_mergeable_vm_userfaultfd_ctx':
>> include/linux/rcupdate.h:391:9: error: dereferencing pointer to incomplete type 'struct userfaultfd_ctx'
typeof(*p) *_________p1 = (typeof(*p) *__force)READ_ONCE(p); \
^
include/linux/rcupdate.h:501:31: note: in expansion of macro '__rcu_access_pointer'
#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu)
^~~~~~~~~~~~~~~~~~~~
include/linux/userfaultfd_k.h:81:9: note: in expansion of macro 'rcu_access_pointer'
return rcu_access_pointer(vma->vm_userfaultfd_ctx.ctx) == vm_ctx.ctx;
^~~~~~~~~~~~~~~~~~
--
In file included from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from kernel/sched/sched.h:5,
from kernel/sched/fair.c:23:
include/linux/userfaultfd_k.h: In function 'is_mergeable_vm_userfaultfd_ctx':
>> include/linux/rcupdate.h:391:9: error: dereferencing pointer to incomplete type 'struct userfaultfd_ctx'
typeof(*p) *_________p1 = (typeof(*p) *__force)READ_ONCE(p); \
^
include/linux/rcupdate.h:501:31: note: in expansion of macro '__rcu_access_pointer'
#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu)
^~~~~~~~~~~~~~~~~~~~
include/linux/userfaultfd_k.h:81:9: note: in expansion of macro 'rcu_access_pointer'
return rcu_access_pointer(vma->vm_userfaultfd_ctx.ctx) == vm_ctx.ctx;
^~~~~~~~~~~~~~~~~~
kernel/sched/fair.c: At top level:
kernel/sched/fair.c:4670:6: warning: no previous prototype for 'set_next_entity' [-Wmissing-prototypes]
void set_next_entity(struct cfs_rq *cfs_rq, struct sched_entity *se)
^~~~~~~~~~~~~~~
kernel/sched/fair.c:11377:6: warning: no previous prototype for 'task_vruntime_update' [-Wmissing-prototypes]
void task_vruntime_update(struct rq *rq, struct task_struct *p, bool in_fi)
^~~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from kernel/sched/pelt.c:27:
include/linux/userfaultfd_k.h: In function 'is_mergeable_vm_userfaultfd_ctx':
>> include/linux/rcupdate.h:391:9: error: dereferencing pointer to incomplete type 'struct userfaultfd_ctx'
typeof(*p) *_________p1 = (typeof(*p) *__force)READ_ONCE(p); \
^
include/linux/rcupdate.h:501:31: note: in expansion of macro '__rcu_access_pointer'
#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu)
^~~~~~~~~~~~~~~~~~~~
include/linux/userfaultfd_k.h:81:9: note: in expansion of macro 'rcu_access_pointer'
return rcu_access_pointer(vma->vm_userfaultfd_ctx.ctx) == vm_ctx.ctx;
^~~~~~~~~~~~~~~~~~
kernel/sched/pelt.c: At top level:
kernel/sched/pelt.c:183:5: warning: no previous prototype for '___update_load_sum' [-Wmissing-prototypes]
int ___update_load_sum(u64 now, struct sched_avg *sa,
^~~~~~~~~~~~~~~~~~
kernel/sched/pelt.c:260:6: warning: no previous prototype for '___update_load_avg' [-Wmissing-prototypes]
void ___update_load_avg(struct sched_avg *sa, unsigned long load)
^~~~~~~~~~~~~~~~~~
--
In file included from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from kernel/sched/sched.h:5,
from kernel/sched/rt.c:6:
include/linux/userfaultfd_k.h: In function 'is_mergeable_vm_userfaultfd_ctx':
>> include/linux/rcupdate.h:391:9: error: dereferencing pointer to incomplete type 'struct userfaultfd_ctx'
typeof(*p) *_________p1 = (typeof(*p) *__force)READ_ONCE(p); \
^
include/linux/rcupdate.h:501:31: note: in expansion of macro '__rcu_access_pointer'
#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu)
^~~~~~~~~~~~~~~~~~~~
include/linux/userfaultfd_k.h:81:9: note: in expansion of macro 'rcu_access_pointer'
return rcu_access_pointer(vma->vm_userfaultfd_ctx.ctx) == vm_ctx.ctx;
^~~~~~~~~~~~~~~~~~
kernel/sched/rt.c: At top level:
kernel/sched/rt.c:682:6: warning: no previous prototype for 'sched_rt_bandwidth_account' [-Wmissing-prototypes]
bool sched_rt_bandwidth_account(struct rt_rq *rt_rq)
^~~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from include/linux/mm_types.h:6,
from include/linux/mmzone.h:21,
from include/linux/gfp.h:6,
from include/linux/mm.h:10,
from mm/vmscan.c:15:
include/linux/userfaultfd_k.h: In function 'is_mergeable_vm_userfaultfd_ctx':
>> include/linux/rcupdate.h:391:9: error: dereferencing pointer to incomplete type 'struct userfaultfd_ctx'
typeof(*p) *_________p1 = (typeof(*p) *__force)READ_ONCE(p); \
^
include/linux/rcupdate.h:501:31: note: in expansion of macro '__rcu_access_pointer'
#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu)
^~~~~~~~~~~~~~~~~~~~
include/linux/userfaultfd_k.h:81:9: note: in expansion of macro 'rcu_access_pointer'
return rcu_access_pointer(vma->vm_userfaultfd_ctx.ctx) == vm_ctx.ctx;
^~~~~~~~~~~~~~~~~~
mm/vmscan.c: At top level:
mm/vmscan.c:910:15: warning: no previous prototype for 'shrink_slab' [-Wmissing-prototypes]
unsigned long shrink_slab(gfp_t gfp_mask, int nid,
^~~~~~~~~~~
mm/vmscan.c: In function 'demote_page_list':
mm/vmscan.c:1384:6: warning: variable 'err' set but not used [-Wunused-but-set-variable]
int err;
^~~
--
In file included from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from include/linux/mm_types.h:6,
from include/linux/mmzone.h:21,
from include/linux/gfp.h:6,
from include/linux/mm.h:10,
from mm/page_alloc.c:19:
include/linux/userfaultfd_k.h: In function 'is_mergeable_vm_userfaultfd_ctx':
>> include/linux/rcupdate.h:391:9: error: dereferencing pointer to incomplete type 'struct userfaultfd_ctx'
typeof(*p) *_________p1 = (typeof(*p) *__force)READ_ONCE(p); \
^
include/linux/rcupdate.h:501:31: note: in expansion of macro '__rcu_access_pointer'
#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu)
^~~~~~~~~~~~~~~~~~~~
include/linux/userfaultfd_k.h:81:9: note: in expansion of macro 'rcu_access_pointer'
return rcu_access_pointer(vma->vm_userfaultfd_ctx.ctx) == vm_ctx.ctx;
^~~~~~~~~~~~~~~~~~
mm/page_alloc.c: At top level:
mm/page_alloc.c:4128:15: warning: no previous prototype for 'should_fail_alloc_page' [-Wmissing-prototypes]
noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
^~~~~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from include/linux/ratelimit.h:6,
from include/linux/dev_printk.h:16,
from include/linux/device.h:15,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from mm/compaction.c:11:
include/linux/userfaultfd_k.h: In function 'is_mergeable_vm_userfaultfd_ctx':
>> include/linux/rcupdate.h:391:9: error: dereferencing pointer to incomplete type 'struct userfaultfd_ctx'
typeof(*p) *_________p1 = (typeof(*p) *__force)READ_ONCE(p); \
^
include/linux/rcupdate.h:501:31: note: in expansion of macro '__rcu_access_pointer'
#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu)
^~~~~~~~~~~~~~~~~~~~
include/linux/userfaultfd_k.h:81:9: note: in expansion of macro 'rcu_access_pointer'
return rcu_access_pointer(vma->vm_userfaultfd_ctx.ctx) == vm_ctx.ctx;
^~~~~~~~~~~~~~~~~~
At top level:
mm/compaction.c:61:27: warning: 'HPAGE_FRAG_CHECK_INTERVAL_MSEC' defined but not used [-Wunused-const-variable=]
static const unsigned int HPAGE_FRAG_CHECK_INTERVAL_MSEC = 500;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from include/linux/mm_types.h:6,
from include/linux/mmzone.h:21,
from include/linux/gfp.h:6,
from include/linux/slab.h:15,
from mm/mmap.c:13:
include/linux/userfaultfd_k.h: In function 'is_mergeable_vm_userfaultfd_ctx':
>> include/linux/rcupdate.h:391:9: error: dereferencing pointer to incomplete type 'struct userfaultfd_ctx'
typeof(*p) *_________p1 = (typeof(*p) *__force)READ_ONCE(p); \
^
include/linux/rcupdate.h:501:31: note: in expansion of macro '__rcu_access_pointer'
#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu)
^~~~~~~~~~~~~~~~~~~~
include/linux/userfaultfd_k.h:81:9: note: in expansion of macro 'rcu_access_pointer'
return rcu_access_pointer(vma->vm_userfaultfd_ctx.ctx) == vm_ctx.ctx;
^~~~~~~~~~~~~~~~~~
In file included from include/linux/hugetlb.h:15,
from mm/mmap.c:29:
>> include/linux/userfaultfd_k.h:82:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
vim +391 include/linux/rcupdate.h
76c8eaafe4f061 Paul E. McKenney 2021-04-21 388
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 389 #define __rcu_access_pointer(p, space) \
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 390 ({ \
7d0ae8086b8283 Paul E. McKenney 2015-03-03 @391 typeof(*p) *_________p1 = (typeof(*p) *__force)READ_ONCE(p); \
423a86a610cad1 Joel Fernandes (Google 2018-12-12 392) rcu_check_sparse(p, space); \
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 393 ((typeof(*p) __force __kernel *)(_________p1)); \
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 394 })
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 395 #define __rcu_dereference_check(p, c, space) \
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 396 ({ \
ac59853c06993a Pranith Kumar 2014-11-13 397 /* Dependency order vs. p above. */ \
506458efaf153c Will Deacon 2017-10-24 398 typeof(*p) *________p1 = (typeof(*p) *__force)READ_ONCE(p); \
f78f5b90c4ffa5 Paul E. McKenney 2015-06-18 399 RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \
423a86a610cad1 Joel Fernandes (Google 2018-12-12 400) rcu_check_sparse(p, space); \
ac59853c06993a Pranith Kumar 2014-11-13 401 ((typeof(*p) __force __kernel *)(________p1)); \
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 402 })
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 403 #define __rcu_dereference_protected(p, c, space) \
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 404 ({ \
f78f5b90c4ffa5 Paul E. McKenney 2015-06-18 405 RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_protected() usage"); \
423a86a610cad1 Joel Fernandes (Google 2018-12-12 406) rcu_check_sparse(p, space); \
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 407 ((typeof(*p) __force __kernel *)(p)); \
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 408 })
995f1405610bd8 Paul E. McKenney 2016-07-01 409 #define rcu_dereference_raw(p) \
995f1405610bd8 Paul E. McKenney 2016-07-01 410 ({ \
995f1405610bd8 Paul E. McKenney 2016-07-01 411 /* Dependency order vs. p above. */ \
506458efaf153c Will Deacon 2017-10-24 412 typeof(p) ________p1 = READ_ONCE(p); \
995f1405610bd8 Paul E. McKenney 2016-07-01 413 ((typeof(*p) __force __kernel *)(________p1)); \
995f1405610bd8 Paul E. McKenney 2016-07-01 414 })
ca5ecddfa8fcbd Paul E. McKenney 2010-04-28 415
:::::: The code at line 391 was first introduced by commit
:::::: 7d0ae8086b828311250c6afdf800b568ac9bd693 rcu: Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE()
:::::: TO: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
:::::: CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2025-03-21 23:30 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202503220753.M2DGFO52-lkp@intel.com \
--to=lkp@intel.com \
--cc=cros-kernel-buildreports@googlegroups.com \
--cc=oe-kbuild-all@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.