[melver:cap-analysis/dev 23/35] security/selinux/avc.c:483 avc_reclaim_node() error: uninitialized symbol 'flags'.

[melver:cap-analysis/dev 23/35] security/selinux/avc.c:483 avc_reclaim_node() error: uninitialized symbol 'flags'.

[kernel test robot]

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: elver@google.com

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/melver/linux.git cap-analysis/dev
head:   b57fd8af63116c56536eb40f04dbe4f2206ec4ed
commit: 32b884d94862a5295719faf9e1c3b5eef162cca4 [23/35] compiler-capability-analysis: Remove __cond_lock() function-like helper
:::::: branch date: 4 days ago
:::::: commit date: 4 days ago
config: powerpc64-randconfig-r071-20250922 (https://download.01.org/0day-ci/archive/20250923/202509230813.j9h9IIQa-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project cafc064fc7a96b3979a023ddae1da2b499d6c954)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202509230813.j9h9IIQa-lkp@intel.com/

New smatch warnings:
security/selinux/avc.c:483 avc_reclaim_node() error: uninitialized symbol 'flags'.
arch/powerpc/kernel/nvram_64.c:704 oops_to_nvram() error: uninitialized symbol 'flags'.
drivers/tty/serial/samsung_tty.c:2288 s3c24xx_serial_console_write() error: uninitialized symbol 'flags'.
drivers/tty/serial/st-asc.c:875 asc_console_write() error: uninitialized symbol 'flags'.

Old smatch warnings:
security/selinux/avc.c:488 avc_reclaim_node() error: uninitialized symbol 'flags'.

vim +/flags +483 security/selinux/avc.c

^1da177e4c3f41 Linus Torvalds   2005-04-16  458  
e67b79850fcc4e Stephen Smalley  2023-03-09  459  static inline int avc_reclaim_node(void)
^1da177e4c3f41 Linus Torvalds   2005-04-16  460  {
^1da177e4c3f41 Linus Torvalds   2005-04-16  461  	struct avc_node *node;
^1da177e4c3f41 Linus Torvalds   2005-04-16  462  	int hvalue, try, ecx;
^1da177e4c3f41 Linus Torvalds   2005-04-16  463  	unsigned long flags;
26036651c56260 Eric Paris       2009-02-12  464  	struct hlist_head *head;
edf3d1aecd0d60 Eric Paris       2009-02-12  465  	spinlock_t *lock;
^1da177e4c3f41 Linus Torvalds   2005-04-16  466  
^1da177e4c3f41 Linus Torvalds   2005-04-16  467  	for (try = 0, ecx = 0; try < AVC_CACHE_SLOTS; try++) {
e67b79850fcc4e Stephen Smalley  2023-03-09  468  		hvalue = atomic_inc_return(&selinux_avc.avc_cache.lru_hint) &
6b6bc6205d9879 Stephen Smalley  2018-03-05  469  			(AVC_CACHE_SLOTS - 1);
e67b79850fcc4e Stephen Smalley  2023-03-09  470  		head = &selinux_avc.avc_cache.slots[hvalue];
e67b79850fcc4e Stephen Smalley  2023-03-09  471  		lock = &selinux_avc.avc_cache.slots_lock[hvalue];
^1da177e4c3f41 Linus Torvalds   2005-04-16  472  
edf3d1aecd0d60 Eric Paris       2009-02-12  473  		if (!spin_trylock_irqsave(lock, flags))
^1da177e4c3f41 Linus Torvalds   2005-04-16  474  			continue;
^1da177e4c3f41 Linus Torvalds   2005-04-16  475  
618442509128fe Paul E. McKenney 2008-04-21  476  		rcu_read_lock();
b67bfe0d42cac5 Sasha Levin      2013-02-27  477  		hlist_for_each_entry(node, head, list) {
e67b79850fcc4e Stephen Smalley  2023-03-09  478  			avc_node_delete(node);
^1da177e4c3f41 Linus Torvalds   2005-04-16  479  			avc_cache_stats_incr(reclaims);
^1da177e4c3f41 Linus Torvalds   2005-04-16  480  			ecx++;
^1da177e4c3f41 Linus Torvalds   2005-04-16  481  			if (ecx >= AVC_CACHE_RECLAIM) {
618442509128fe Paul E. McKenney 2008-04-21  482  				rcu_read_unlock();
edf3d1aecd0d60 Eric Paris       2009-02-12 @483  				spin_unlock_irqrestore(lock, flags);
^1da177e4c3f41 Linus Torvalds   2005-04-16  484  				goto out;
^1da177e4c3f41 Linus Torvalds   2005-04-16  485  			}
^1da177e4c3f41 Linus Torvalds   2005-04-16  486  		}
618442509128fe Paul E. McKenney 2008-04-21  487  		rcu_read_unlock();
edf3d1aecd0d60 Eric Paris       2009-02-12  488  		spin_unlock_irqrestore(lock, flags);
^1da177e4c3f41 Linus Torvalds   2005-04-16  489  	}
^1da177e4c3f41 Linus Torvalds   2005-04-16  490  out:
^1da177e4c3f41 Linus Torvalds   2005-04-16  491  	return ecx;
^1da177e4c3f41 Linus Torvalds   2005-04-16  492  }
^1da177e4c3f41 Linus Torvalds   2005-04-16  493  

:::::: The code at line 483 was first introduced by commit
:::::: edf3d1aecd0d608acbd561b0c527e1d41abcb657 SELinux: code readability with avc_cache

:::::: TO: Eric Paris <eparis@redhat.com>
:::::: CC: James Morris <jmorris@namei.org>

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