* [peterz-queue:sched/urgent 1/1] kernel/sched/core.c:246:9: sparse: sparse: context imbalance in 'sched_core_lock' - different lock contexts for basic block
@ 2021-08-20 16:30 kernel test robot
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From: kernel test robot @ 2021-08-20 16:30 UTC (permalink / raw)
To: kbuild
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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Peter Zijlstra <peterz@infradead.org>
CC: Josh Don <joshdon@google.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/urgent
head: 3c474b3239f12fe0b00d7e82481f36a1f31e79ab
commit: 3c474b3239f12fe0b00d7e82481f36a1f31e79ab [1/1] sched: Fix Core-wide rq->lock for uninitialized CPUs
:::::: branch date: 6 hours ago
:::::: commit date: 6 hours ago
config: i386-randconfig-s002-20210820 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-348-gf0e6938b-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?id=3c474b3239f12fe0b00d7e82481f36a1f31e79ab
git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
git fetch --no-tags peterz-queue sched/urgent
git checkout 3c474b3239f12fe0b00d7e82481f36a1f31e79ab
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash
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 >>)
kernel/sched/core.c:963:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:963:38: sparse: expected struct task_struct *curr
kernel/sched/core.c:963:38: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:2086:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:2086:33: sparse: expected struct task_struct *p
kernel/sched/core.c:2086:33: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:2086:68: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:2086:68: sparse: expected struct task_struct *tsk
kernel/sched/core.c:2086:68: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:3298:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/core.c:3298:17: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/core.c:3298:17: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/core.c:3498:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct const *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:3498:36: sparse: expected struct task_struct const *p
kernel/sched/core.c:3498:36: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:8523:43: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *push_task @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:8523:43: sparse: expected struct task_struct *push_task
kernel/sched/core.c:8523:43: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:4953:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:4953:38: sparse: expected struct task_struct *curr
kernel/sched/core.c:4953:38: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:5633:32: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/core.c:5633:32: sparse: struct task_struct [noderef] __rcu *
kernel/sched/core.c:5633:32: sparse: struct task_struct *
kernel/sched/core.c:5660:23: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/core.c:5660:23: sparse: struct task_struct [noderef] __rcu *
kernel/sched/core.c:5660:23: sparse: struct task_struct *
kernel/sched/core.c:5668:46: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/core.c:5668:46: sparse: struct task_struct *
kernel/sched/core.c:5668:46: sparse: struct task_struct [noderef] __rcu *
kernel/sched/core.c:5725:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/core.c:5725:9: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/core.c:5725:9: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/core.c:5915:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *prev @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:5915:14: sparse: expected struct task_struct *prev
kernel/sched/core.c:5915:14: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:6520:17: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/core.c:6520:17: sparse: struct task_struct *
kernel/sched/core.c:6520:17: sparse: struct task_struct [noderef] __rcu *
kernel/sched/core.c:6724:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/core.c:6724:22: sparse: struct task_struct [noderef] __rcu *
kernel/sched/core.c:6724:22: sparse: struct task_struct *
kernel/sched/core.c:10459:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:10459:25: sparse: expected struct task_struct *p
kernel/sched/core.c:10459:25: sparse: got struct task_struct [noderef] __rcu *curr
>> kernel/sched/core.c:246:9: sparse: sparse: context imbalance in 'sched_core_lock' - different lock contexts for basic block
kernel/sched/core.c:256:17: sparse: sparse: context imbalance in 'sched_core_unlock' - unexpected unlock
kernel/sched/core.c:467:6: sparse: sparse: context imbalance in 'raw_spin_rq_lock_nested' - wrong count at exit
kernel/sched/core.c:500:23: sparse: sparse: context imbalance in 'raw_spin_rq_trylock' - wrong count at exit
kernel/sched/core.c:516:6: sparse: sparse: context imbalance in 'raw_spin_rq_unlock' - unexpected unlock
kernel/sched/core.c: note: in included file:
kernel/sched/sched.h:1169:30: sparse: sparse: context imbalance in '__task_rq_lock' - wrong count at exit
kernel/sched/sched.h:1169:30: sparse: sparse: context imbalance in 'task_rq_lock' - wrong count at exit
kernel/sched/core.c: note: in included file:
kernel/sched/pelt.h:76:13: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct const *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/pelt.h:76:13: sparse: expected struct task_struct const *p
kernel/sched/pelt.h:76:13: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:2077:33: sparse: sparse: dereference of noderef expression
kernel/sched/core.c:2078:19: sparse: sparse: dereference of noderef expression
kernel/sched/core.c:2079:37: sparse: sparse: dereference of noderef expression
kernel/sched/core.c: note: in included file:
kernel/sched/sched.h:2011:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2011:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2011:25: sparse: struct task_struct *
kernel/sched/sched.h:2169:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2169:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2169:9: sparse: struct task_struct *
kernel/sched/core.c:2052:38: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/core.c:2052:38: sparse: struct task_struct [noderef] __rcu *
kernel/sched/core.c:2052:38: sparse: struct task_struct const *
kernel/sched/sched.h:2011:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2011:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2011:25: sparse: struct task_struct *
kernel/sched/sched.h:2169:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2169:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2169:9: sparse: struct task_struct *
kernel/sched/sched.h:2169:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2169:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2169:9: sparse: struct task_struct *
kernel/sched/sched.h:2169:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2169:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2169:9: sparse: struct task_struct *
kernel/sched/sched.h:2169:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2169:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2169:9: sparse: struct task_struct *
kernel/sched/sched.h:2011:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2011:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2011:25: sparse: struct task_struct *
kernel/sched/sched.h:2169:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2169:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2169:9: sparse: struct task_struct *
kernel/sched/sched.h:2011:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2011:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2011:25: sparse: struct task_struct *
kernel/sched/sched.h:2169:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2169:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2169:9: sparse: struct task_struct *
kernel/sched/sched.h:2011:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2011:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2011:25: sparse: struct task_struct *
kernel/sched/sched.h:2169:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2169:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2169:9: sparse: struct task_struct *
vim +/sched_core_lock +246 kernel/sched/core.c
9edeaea1bc4523 Peter Zijlstra 2020-11-17 239
3c474b3239f12f Peter Zijlstra 2021-08-19 240 static void sched_core_lock(int cpu, unsigned long *flags)
3c474b3239f12f Peter Zijlstra 2021-08-19 241 {
3c474b3239f12f Peter Zijlstra 2021-08-19 242 const struct cpumask *smt_mask = cpu_smt_mask(cpu);
3c474b3239f12f Peter Zijlstra 2021-08-19 243 int t, i = 0;
3c474b3239f12f Peter Zijlstra 2021-08-19 244
3c474b3239f12f Peter Zijlstra 2021-08-19 245 local_irq_save(*flags);
3c474b3239f12f Peter Zijlstra 2021-08-19 @246 for_each_cpu(t, smt_mask)
3c474b3239f12f Peter Zijlstra 2021-08-19 247 raw_spin_lock_nested(&cpu_rq(t)->__lock, i++);
3c474b3239f12f Peter Zijlstra 2021-08-19 248 }
3c474b3239f12f Peter Zijlstra 2021-08-19 249
---
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https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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