include/linux/spinlock.h:409:9: sparse: sparse: context imbalance in 'ttm_page_pool_fill_locked' - unexpected unlock

include/linux/spinlock.h:409:9: sparse: sparse: context imbalance in 'ttm_page_pool_fill_locked' - unexpected unlock

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 2657 bytes --]

CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Nicholas Piggin <npiggin@gmail.com>
CC: Peter Zijlstra <peterz@infradead.org>
CC: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
CC: Thomas Gleixner <tglx@linutronix.de>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   d3d45f8220d60a0b2aaaacf8fb2be4e6ffd9008e
commit: 044d0d6de9f50192f9697583504a382347ee95ca lockdep: Only trace IRQ edges
date:   5 weeks ago
:::::: branch date: 23 hours ago
:::::: commit date: 5 weeks ago
config: sparc-randconfig-s031-20201004 (attached as .config)
compiler: sparc64-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: v0.6.2-201-g24bdaac6-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=044d0d6de9f50192f9697583504a382347ee95ca
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 044d0d6de9f50192f9697583504a382347ee95ca
        # 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=sparc 

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

	echo
	echo "sparse warnings: (new ones prefixed by >>)"
	echo
   drivers/gpu/drm/ttm/ttm_page_alloc.c: note: in included file:
>> include/linux/spinlock.h:409:9: sparse: sparse: context imbalance in 'ttm_page_pool_fill_locked' - unexpected unlock

vim +/ttm_page_pool_fill_locked +409 include/linux/spinlock.h

c2f21ce2e31286 Thomas Gleixner 2009-12-02  406  
3490565b633c70 Denys Vlasenko  2015-07-13  407  static __always_inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)
c2f21ce2e31286 Thomas Gleixner 2009-12-02  408  {
c2f21ce2e31286 Thomas Gleixner 2009-12-02 @409  	raw_spin_unlock_irqrestore(&lock->rlock, flags);
c2f21ce2e31286 Thomas Gleixner 2009-12-02  410  }
c2f21ce2e31286 Thomas Gleixner 2009-12-02  411  

:::::: The code at line 409 was first introduced by commit
:::::: c2f21ce2e31286a0a32f8da0a7856e9ca1122ef3 locking: Implement new raw_spinlock

:::::: TO: Thomas Gleixner <tglx@linutronix.de>
:::::: CC: Thomas Gleixner <tglx@linutronix.de>

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

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 30432 bytes --]