tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 2324d50d051ec0f14a548e78554fb02513d6dcef commit: 58b09919626bf9067345289212ec030c61eb1034 mptcp: create msk early date: 5 months ago config: powerpc64-randconfig-s031-20200805 (attached as .config) compiler: powerpc64-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: v0.6.2-117-g8c7aee71-dirty git checkout 58b09919626bf9067345289212ec030c61eb1034 # 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 <l...@intel.com>
sparse warnings: (new ones prefixed by >>)
net/mptcp/protocol.c: note: in included file (through
arch/powerpc/include/asm/mmiowb.h, include/linux/spinlock.h,
include/linux/seqlock.h, ...):
>> include/asm-generic/mmiowb.h:56:9: sparse: sparse: context imbalance in
>> 'mptcp_sk_clone' - unexpected unlock
vim +/mptcp_sk_clone +56 include/asm-generic/mmiowb.h
d1be6a28b13ce6d Will Deacon 2019-02-22 46
d1be6a28b13ce6d Will Deacon 2019-02-22 47 static inline void
mmiowb_spin_unlock(void)
d1be6a28b13ce6d Will Deacon 2019-02-22 48 {
d1be6a28b13ce6d Will Deacon 2019-02-22 49 struct mmiowb_state *ms =
__mmiowb_state();
d1be6a28b13ce6d Will Deacon 2019-02-22 50
d1be6a28b13ce6d Will Deacon 2019-02-22 51 if
(unlikely(ms->mmiowb_pending)) {
d1be6a28b13ce6d Will Deacon 2019-02-22 52 ms->mmiowb_pending = 0;
d1be6a28b13ce6d Will Deacon 2019-02-22 53 mmiowb();
d1be6a28b13ce6d Will Deacon 2019-02-22 54 }
d1be6a28b13ce6d Will Deacon 2019-02-22 55
d1be6a28b13ce6d Will Deacon 2019-02-22 @56 ms->nesting_count--;
:::::: The code at line 56 was first introduced by commit
:::::: d1be6a28b13ce6d1bc42bf9b6a9454c65839225b asm-generic/mmiowb: Add generic
implementation of mmiowb() tracking
:::::: TO: Will Deacon <will.dea...@arm.com>
:::::: CC: Will Deacon <will.dea...@arm.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
