From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: include/linux/rwlock_api_smp.h:251:30: sparse: sparse: context imbalance in 'ip6_mc_msfilter' - unexpected unlock
Date: Wed, 28 Oct 2020 08:34:14 +0800 [thread overview]
Message-ID: <202010280859.H9qv4QEE-lkp@intel.com> (raw)
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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Amit Daniel Kachhap <amit.kachhap@arm.com>
CC: Will Deacon <will@kernel.org>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ed8780e3f2ecc82645342d070c6b4e530532e680
commit: 203b1152d18c04823f73b843eb3b0ad646e4dbb2 arm64/crash_core: Export KERNELPACMASK in vmcoreinfo
date: 6 months ago
:::::: branch date: 3 hours ago
:::::: commit date: 6 months ago
config: arm64-randconfig-s032-20201028 (attached as .config)
compiler: aarch64-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: v0.6.3-56-gc09e8239-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=203b1152d18c04823f73b843eb3b0ad646e4dbb2
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 203b1152d18c04823f73b843eb3b0ad646e4dbb2
# 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=arm64
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 >>)"
net/ipv6/mcast.c: note: in included file:
include/net/mld.h:32:43: sparse: sparse: array of flexible structures
net/ipv6/mcast.c:259:25: sparse: sparse: context imbalance in 'ip6_mc_find_dev_rcu' - different lock contexts for basic block
net/ipv6/mcast.c:453:9: sparse: sparse: context imbalance in 'ip6_mc_source' - unexpected unlock
net/ipv6/mcast.c: note: in included file (through include/linux/spinlock_api_smp.h, include/linux/spinlock.h, include/linux/seqlock.h, ...):
>> include/linux/rwlock_api_smp.h:251:30: sparse: sparse: context imbalance in 'ip6_mc_msfilter' - unexpected unlock
>> include/linux/rwlock_api_smp.h:251:30: sparse: sparse: context imbalance in 'ip6_mc_msfget' - unexpected unlock
net/ipv6/mcast.c:2704:25: sparse: sparse: context imbalance in 'igmp6_mc_get_next' - unexpected unlock
net/ipv6/mcast.c:2726:9: sparse: sparse: context imbalance in 'igmp6_mc_get_idx' - wrong count at exit
net/ipv6/mcast.c:2753:9: sparse: sparse: context imbalance in 'igmp6_mc_seq_stop' - unexpected unlock
net/ipv6/mcast.c:2825:31: sparse: sparse: context imbalance in 'igmp6_mcf_get_next' - unexpected unlock
net/ipv6/mcast.c:2857:9: sparse: sparse: context imbalance in 'igmp6_mcf_get_idx' - wrong count at exit
net/ipv6/mcast.c:2874:9: sparse: sparse: context imbalance in 'igmp6_mcf_seq_next' - wrong count at exit
net/ipv6/mcast.c:2887:17: sparse: sparse: context imbalance in 'igmp6_mcf_seq_stop' - unexpected unlock
vim +/ip6_mc_msfilter +251 include/linux/rwlock_api_smp.h
6b6b4792f89346e Thomas Gleixner 2009-11-16 246
9c1721aa4994f66 Thomas Gleixner 2009-12-03 247 static inline void __raw_read_unlock_bh(rwlock_t *lock)
6b6b4792f89346e Thomas Gleixner 2009-11-16 248 {
5facae4f3549b5c Qian Cai 2019-09-19 249 rwlock_release(&lock->dep_map, _RET_IP_);
9828ea9d75c38fe Thomas Gleixner 2009-12-03 250 do_raw_read_unlock(lock);
9ea4c380066fbe2 Peter Zijlstra 2013-11-19 @251 __local_bh_enable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET);
6b6b4792f89346e Thomas Gleixner 2009-11-16 252 }
6b6b4792f89346e Thomas Gleixner 2009-11-16 253
:::::: The code at line 251 was first introduced by commit
:::::: 9ea4c380066fbe23fe0da7f4abfabc444f2467f4 locking: Optimize lock_bh functions
:::::: TO: Peter Zijlstra <peterz@infradead.org>
:::::: CC: Ingo Molnar <mingo@kernel.org>
---
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:[~2020-10-28 0:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-28 0:34 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2020-10-29 13:25 include/linux/rwlock_api_smp.h:251:30: sparse: sparse: context imbalance in 'ip6_mc_msfilter' - unexpected unlock kernel test robot
2020-10-29 14:58 kernel test robot
2020-10-30 5:43 kernel test robot
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