CC: [email protected]
CC: [email protected]
TO: Paolo Abeni <[email protected]>
CC: Mat Martineau <[email protected]>

tree:   https://github.com/multipath-tcp/mptcp_net-next.git export
head:   bdef4aa8ad1928bcec942c460865c91139e84fbe
commit: 427c749c2d23de6f088292a079b3777de5e04a82 [30/35] mptcp: keep unaccepted 
MPC subflow into join list
:::::: branch date: 4 hours ago
:::::: commit date: 4 hours ago
config: c6x-randconfig-s032-20201023 (attached as .config)
compiler: c6x-elf-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: v0.6.3-17-g2d3af347-dirty
        # 
https://github.com/multipath-tcp/mptcp_net-next/commit/427c749c2d23de6f088292a079b3777de5e04a82
        git remote add mptcp https://github.com/multipath-tcp/mptcp_net-next.git
        git fetch --no-tags mptcp export
        git checkout 427c749c2d23de6f088292a079b3777de5e04a82
        # 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=c6x 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>


"sparse warnings: (new ones prefixed by >>)"
   net/mptcp/protocol.c:617:13: sparse: sparse: context imbalance in 
'move_skbs_to_msk' - different lock contexts for basic block
   net/mptcp/protocol.c: note: in included file (through 
include/linux/mmzone.h, include/linux/gfp.h, include/linux/umh.h, 
include/linux/kmod.h, ...):
   include/linux/spinlock.h:399:9: sparse: sparse: context imbalance in 
'mptcp_rcv_space_adjust' - unexpected unlock
   include/linux/spinlock.h:399:9: sparse: sparse: context imbalance in 
'__mptcp_move_skbs' - unexpected unlock
   include/linux/spinlock.h:399:9: sparse: sparse: context imbalance in 
'mptcp_close' - unexpected unlock
   net/mptcp/protocol.c:2271:24: sparse: sparse: context imbalance in 
'mptcp_sk_clone' - unexpected unlock
>> include/linux/spinlock.h:399:9: sparse: sparse: context imbalance in 
>> 'mptcp_stream_accept' - unexpected unlock
   include/linux/spinlock.h:399:9: sparse: sparse: context imbalance in 
'mptcp_check_writeable' - unexpected unlock

vim +/mptcp_stream_accept +399 include/linux/spinlock.h

c2f21ce2e31286a Thomas Gleixner 2009-12-02  396  
3490565b633c705 Denys Vlasenko  2015-07-13  397  static __always_inline void 
spin_unlock_bh(spinlock_t *lock)
c2f21ce2e31286a Thomas Gleixner 2009-12-02  398  {
c2f21ce2e31286a Thomas Gleixner 2009-12-02 @399         
raw_spin_unlock_bh(&lock->rlock);
c2f21ce2e31286a Thomas Gleixner 2009-12-02  400  }
c2f21ce2e31286a Thomas Gleixner 2009-12-02  401  

:::::: The code at line 399 was first introduced by commit
:::::: c2f21ce2e31286a0a32f8da0a7856e9ca1122ef3 locking: Implement new 
raw_spinlock

:::::: TO: Thomas Gleixner <[email protected]>
:::::: CC: Thomas Gleixner <[email protected]>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

Attachment: .config.gz
Description: application/gzip

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