linux-kernel - arch/x86/include/asm/paravirt.h:650:9: sparse: sparse: context imbalance in 'mptcp_sk_clone'

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Date:   Tue, 9 Jun 2020 01:25:02 +0800
From:   kernel test robot <lkp@...el.com>
To:     Paolo Abeni <pabeni@...hat.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Matthieu Baerts <matthieu.baerts@...sares.net>
Subject: arch/x86/include/asm/paravirt.h:650:9: sparse: sparse: context
 imbalance in 'mptcp_sk_clone' - unexpected unlock

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   af7b4801030c07637840191c69eb666917e4135d
commit: 58b09919626bf9067345289212ec030c61eb1034 mptcp: create msk early
date:   3 months ago
config: x86_64-randconfig-s022-20200608 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-247-gcadbd124-dirty
        git checkout 58b09919626bf9067345289212ec030c61eb1034
        # save the attached .config to linux build tree
        make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>


sparse warnings: (new ones prefixed by >>)

>> arch/x86/include/asm/paravirt.h:650:9: sparse: sparse: context imbalance in 'mptcp_sk_clone' - unexpected unlock

vim +/mptcp_sk_clone +650 arch/x86/include/asm/paravirt.h

f233f7f1581e78 Peter Zijlstra (Intel  2015-04-24  647) 
f233f7f1581e78 Peter Zijlstra (Intel  2015-04-24  648) static __always_inline void pv_queued_spin_unlock(struct qspinlock *lock)
f233f7f1581e78 Peter Zijlstra (Intel  2015-04-24  649) {
5c83511bdb9832 Juergen Gross          2018-08-28 @650  	PVOP_VCALLEE1(lock.queued_spin_unlock, lock);
f233f7f1581e78 Peter Zijlstra (Intel  2015-04-24  651) }
f233f7f1581e78 Peter Zijlstra (Intel  2015-04-24  652) 

:::::: The code at line 650 was first introduced by commit
:::::: 5c83511bdb9832c86be20fb86b783356e2f58062 x86/paravirt: Use a single ops structure

:::::: TO: Juergen Gross <jgross@...e.com>
:::::: CC: Thomas Gleixner <tglx@...utronix.de>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (33253 bytes)