2:50 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/core
head: f530b3f85f437a7beb09ac49cef3ce771c40715f
commit: d7533f6616e62e1aceaa580bcffa32eb2d36f2ab [3/5] sched/fair: Eliminate bandwidth
race between throttling and distribution
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce:
git checkout d7533f6616e62e1aceaa580bcffa32eb2d36f2ab
# save the attached .config to linux build tree
make ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp(a)intel.com>
All error/warnings (new ones prefixed by >>):
In file included from arch/x86/include/asm/bug.h:83:0,
from include/linux/bug.h:5,
from include/linux/thread_info.h:12,
from arch/x86/include/asm/preempt.h:7,
from include/linux/preempt.h:78,
from include/linux/rcupdate.h:27,
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:
kernel/sched/fair.c: In function '__assign_cfs_rq_runtime':
> kernel/sched/fair.c:4596:30: error: 'struct cfs_rq' has
no member named 'lock'; did you mean 'load'?
lockdep_assert_held(cfs_rq->lock);
^
include/asm-generic/bug.h:113:25: note: in definition of macro 'WARN_ON'
int __ret_warn_on = !!(condition); \
^~~~~~~~~
include/linux/lockdep.h:435:27: note: in expansion of macro 'lockdep_is_held'
WARN_ON(debug_locks && !lockdep_is_held(l)); \
^~~~~~~~~~~~~~~
> kernel/sched/fair.c:4596:2: note: in expansion of macro
'lockdep_assert_held'
lockdep_assert_held(cfs_rq->lock);
^~~~~~~~~~~~~~~~~~~
vim +4596 kernel/sched/fair.c
4589
4590 /* returns 0 on failure to allocate runtime */
4591 static int __assign_cfs_rq_runtime(struct cfs_bandwidth *cfs_b,
4592 struct cfs_rq *cfs_rq, u64 target_runtime)
4593 {
4594 u64 min_amount, amount = 0;
4595
4596 lockdep_assert_held(cfs_rq->lock);
4597
4598 /* note: this is a positive sum as runtime_remaining <= 0 */
4599 min_amount = target_runtime - cfs_rq->runtime_remaining;
4600
4601 if (cfs_b->quota == RUNTIME_INF)
4602 amount = min_amount;
4603 else {
4604 start_cfs_bandwidth(cfs_b);
4605
4606 if (cfs_b->runtime > 0) {
4607 amount = min(cfs_b->runtime, min_amount);
4608 cfs_b->runtime -= amount;
4609 cfs_b->idle = 0;
4610 }
4611 }
4612
4613 cfs_rq->runtime_remaining += amount;
4614
4615 return cfs_rq->runtime_remaining > 0;
4616 }
4617
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org