linux-kernel - include/linux/spinlock.h:408:9: sparse: sparse: context imbalance in 'ks8851_unlock_par'

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <202007302012.4Rpir3fX%lkp@intel.com>
Date:   Thu, 30 Jul 2020 20:13:27 +0800
From:   kernel test robot <lkp@...el.com>
To:     Marek Vasut <marex@...x.de>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Andrew Lunn <andrew@...n.ch>
Subject: include/linux/spinlock.h:408:9: sparse: sparse: context imbalance in
 'ks8851_unlock_par' - unexpected unlock

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   83bdc7275e6206f560d247be856bceba3e1ed8f2
commit: 797047f875b5463719cc70ba213eb691d453c946 net: ks8851: Implement Parallel bus operations
date:   9 weeks ago
config: arm-randconfig-s031-20200730 (attached as .config)
compiler: arm-linux-gnueabi-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: v0.6.2-98-g4932334a-dirty
        git checkout 797047f875b5463719cc70ba213eb691d453c946
        # 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=arm 

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 >>)

   drivers/net/ethernet/micrel/ks8851_par.c:64:13: sparse: sparse: context imbalance in 'ks8851_lock_par' - wrong count at exit
   drivers/net/ethernet/micrel/ks8851_par.c: note: in included file (through include/linux/seqlock.h, include/linux/time.h, include/linux/ktime.h, ...):
>> include/linux/spinlock.h:408:9: sparse: sparse: context imbalance in 'ks8851_unlock_par' - unexpected unlock

vim +/ks8851_unlock_par +408 include/linux/spinlock.h

c2f21ce2e31286 Thomas Gleixner 2009-12-02  405  
3490565b633c70 Denys Vlasenko  2015-07-13  406  static __always_inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)
c2f21ce2e31286 Thomas Gleixner 2009-12-02  407  {
c2f21ce2e31286 Thomas Gleixner 2009-12-02 @408  	raw_spin_unlock_irqrestore(&lock->rlock, flags);
c2f21ce2e31286 Thomas Gleixner 2009-12-02  409  }
c2f21ce2e31286 Thomas Gleixner 2009-12-02  410  

:::::: The code at line 408 was first introduced by commit
:::::: c2f21ce2e31286a0a32f8da0a7856e9ca1122ef3 locking: Implement new raw_spinlock

:::::: TO: Thomas Gleixner <tglx@...utronix.de>
:::::: 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" (30913 bytes)