[nsa:xlnx/fix/buf-mmap-multibuffer 26771/27391] drivers/net/mqnic/mqnic_irq.c:108:62: warning: 'snprintf' output may be truncated before the last format character

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/nunojsa/linux xlnx/fix/buf-mmap-multibuffer
head:   a26a8baba71e866951f6abf4fc6c0504770c272e
commit: 5df21ca246e1457998e7b8460a088a74f6157c98 [26771/27391] drivers: net: Add Corundum MQNIC driver
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20260613/202606130205.hDCA5lSW-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260613/202606130205.hDCA5lSW-lkp@intel.com/reproduce)

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>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606130205.hDCA5lSW-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/net/mqnic/mqnic_irq.c: In function 'mqnic_irq_init_platform':
>> drivers/net/mqnic/mqnic_irq.c:108:62: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
     108 |                 snprintf(irq->name, sizeof(irq->name), "%s-%u", mdev->name, k);
         |                                                              ^
   drivers/net/mqnic/mqnic_irq.c:108:17: note: 'snprintf' output between 3 and 20 bytes into a destination of size 19
     108 |                 snprintf(irq->name, sizeof(irq->name), "%s-%u", mdev->name, k);
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/snprintf +108 drivers/net/mqnic/mqnic_irq.c

    82	
    83	int mqnic_irq_init_platform(struct mqnic_dev *mdev)
    84	{
    85		struct platform_device *pdev = mdev->pfdev;
    86		struct device *dev = mdev->dev;
    87		int k;
    88	
    89		// Allocate IRQs
    90		mdev->irq_count = platform_irq_count(pdev);
    91	
    92		// Set up interrupts
    93		for (k = 0; k < mdev->irq_count; k++) {
    94			int irqn;
    95			struct mqnic_irq *irq;
    96			int ret;
    97	
    98			irqn = platform_get_irq(pdev, k);
    99			if (irqn < 0)
   100				return irqn;
   101	
   102			irq = devm_kzalloc(dev, sizeof(*irq), GFP_KERNEL);
   103			if (!irq)
   104				return -ENOMEM;
   105	
   106			ATOMIC_INIT_NOTIFIER_HEAD(&irq->nh);
   107	
 > 108			snprintf(irq->name, sizeof(irq->name), "%s-%u", mdev->name, k);

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