From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: arch/powerpc/kvm/book3s_hv.c:2935:20: sparse: sparse: context imbalance in 'collect_piggybacks' - different lock contexts for basic block
Date: Wed, 25 Nov 2020 18:44:47 +0800 [thread overview]
Message-ID: <202011251841.iPSF7Wdk-lkp@intel.com> (raw)
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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linux Memory Management List <linux-mm@kvack.org>
CC: Cezary Rojewski <cezary.rojewski@intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 127c501a03d5db8b833e953728d3bcf53c8832a9
commit: e130816164e244b692921de49771eeb28205152d include/linux/list.h: add a macro to test if entry is pointing to the head
date: 6 weeks ago
:::::: branch date: 11 hours ago
:::::: commit date: 6 weeks ago
config: powerpc64-randconfig-s032-20201125 (attached as .config)
compiler: powerpc64le-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.3-151-g540c2c4b-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e130816164e244b692921de49771eeb28205152d
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e130816164e244b692921de49771eeb28205152d
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=powerpc64
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 >>)"
arch/powerpc/kvm/book3s_hv.c:3561:5: sparse: sparse: symbol 'kvmhv_p9_guest_entry' was not declared. Should it be static?
arch/powerpc/kvm/book3s_hv.c:616:17: sparse: sparse: context imbalance in 'kvmppc_update_vpa' - unexpected unlock
arch/powerpc/kvm/book3s_hv.c: note: in included file:
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __le64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __le64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __le64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: cast to restricted __le64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __le64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __le64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __le64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted __le64
>> arch/powerpc/kvm/book3s_hv.c:2935:20: sparse: sparse: context imbalance in 'collect_piggybacks' - different lock contexts for basic block
arch/powerpc/kvm/book3s_hv.c:3186:25: sparse: sparse: context imbalance in 'kvmppc_run_core' - unexpected unlock
arch/powerpc/kvm/book3s_hv.c:3836:17: sparse: sparse: context imbalance in 'kvmppc_vcore_blocked' - unexpected unlock
vim +/collect_piggybacks +2935 arch/powerpc/kvm/book3s_hv.c
d911f0beddc2a9 Paul Mackerras 2015-03-28 2906
ec257165082616 Paul Mackerras 2015-06-24 2907 static void collect_piggybacks(struct core_info *cip, int target_threads)
25fedfca94cfbf Paul Mackerras 2015-03-28 2908 {
ec257165082616 Paul Mackerras 2015-06-24 2909 struct preempted_vcore_list *lp = this_cpu_ptr(&preempted_vcores);
ec257165082616 Paul Mackerras 2015-06-24 2910 struct kvmppc_vcore *pvc, *vcnext;
ec257165082616 Paul Mackerras 2015-06-24 2911
ec257165082616 Paul Mackerras 2015-06-24 2912 spin_lock(&lp->lock);
ec257165082616 Paul Mackerras 2015-06-24 2913 list_for_each_entry_safe(pvc, vcnext, &lp->list, preempt_list) {
ec257165082616 Paul Mackerras 2015-06-24 2914 if (!spin_trylock(&pvc->lock))
ec257165082616 Paul Mackerras 2015-06-24 2915 continue;
ec257165082616 Paul Mackerras 2015-06-24 2916 prepare_threads(pvc);
d28eafc5a64045 Paul Mackerras 2019-08-27 2917 if (!pvc->n_runnable || !pvc->kvm->arch.mmu_ready) {
ec257165082616 Paul Mackerras 2015-06-24 2918 list_del_init(&pvc->preempt_list);
ec257165082616 Paul Mackerras 2015-06-24 2919 if (pvc->runner == NULL) {
ec257165082616 Paul Mackerras 2015-06-24 2920 pvc->vcore_state = VCORE_INACTIVE;
ec257165082616 Paul Mackerras 2015-06-24 2921 kvmppc_core_end_stolen(pvc);
ec257165082616 Paul Mackerras 2015-06-24 2922 }
ec257165082616 Paul Mackerras 2015-06-24 2923 spin_unlock(&pvc->lock);
ec257165082616 Paul Mackerras 2015-06-24 2924 continue;
ec257165082616 Paul Mackerras 2015-06-24 2925 }
ec257165082616 Paul Mackerras 2015-06-24 2926 if (!can_piggyback(pvc, cip, target_threads)) {
ec257165082616 Paul Mackerras 2015-06-24 2927 spin_unlock(&pvc->lock);
ec257165082616 Paul Mackerras 2015-06-24 2928 continue;
ec257165082616 Paul Mackerras 2015-06-24 2929 }
ec257165082616 Paul Mackerras 2015-06-24 2930 kvmppc_core_end_stolen(pvc);
ec257165082616 Paul Mackerras 2015-06-24 2931 pvc->vcore_state = VCORE_PIGGYBACK;
ec257165082616 Paul Mackerras 2015-06-24 2932 if (cip->total_threads >= target_threads)
ec257165082616 Paul Mackerras 2015-06-24 2933 break;
ec257165082616 Paul Mackerras 2015-06-24 2934 }
ec257165082616 Paul Mackerras 2015-06-24 @2935 spin_unlock(&lp->lock);
ec257165082616 Paul Mackerras 2015-06-24 2936 }
ec257165082616 Paul Mackerras 2015-06-24 2937
:::::: The code at line 2935 was first introduced by commit
:::::: ec257165082616841a354dd915801ed43e3553be KVM: PPC: Book3S HV: Make use of unused threads when running guests
:::::: TO: Paul Mackerras <paulus@samba.org>
:::::: CC: Alexander Graf <agraf@suse.de>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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next reply other threads:[~2020-11-25 10:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-25 10:44 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-02-13 18:28 arch/powerpc/kvm/book3s_hv.c:2935:20: sparse: sparse: context imbalance in 'collect_piggybacks' - different lock contexts for basic block kernel test robot
2021-05-18 20:59 kernel test robot
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