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X-CSE-ConnectionGUID: RIAKyV+YSpSXeJnNQO6cvQ== X-CSE-MsgGUID: 1n/+xIJ8To6KqUOiMbQY+Q== X-IronPort-AV: E=McAfee;i="6800,10657,11885"; a="110850744" X-IronPort-AV: E=Sophos;i="6.25,241,1779174000"; d="scan'208";a="110850744" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Aug 2026 13:21:22 -0700 X-CSE-ConnectionGUID: YbQTxM7rRsC/wiy5WFYceQ== X-CSE-MsgGUID: cN5v3df3QtSsgz7tnAu8Ig== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,241,1779174000"; d="scan'208";a="272311731" Received: from lkp-server01.sh.intel.com (HELO 3532383e6126) ([10.239.97.150]) by fmviesa005.fm.intel.com with ESMTP; 24 Aug 2026 13:21:20 -0700 Received: from kbuild by 3532383e6126 with local (Exim 4.98.2) (envelope-from ) id 1wybAL-00000000431-018s; Mon, 24 Aug 2026 20:21:14 +0000 Date: Tue, 25 Aug 2026 04:20:59 +0800 From: kernel test robot To: Swark Yang Cc: oe-kbuild-all@lists.linux.dev, Jassi Brar Subject: [jassibrar-mailbox:for-next 22/22] drivers/mailbox/axiado-mailbox.c:325:39: warning: '-errors' directive output may be truncated writing 7 bytes into a region of size between 2 and 11 Message-ID: <202608250447.gGkRwNAl-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox.git for-next head: 14af7a96afa39f4f3c1972705489b9ba15c01857 commit: 14af7a96afa39f4f3c1972705489b9ba15c01857 [22/22] mailbox: add Axiado AX3005 mailbox driver config: arm64-randconfig-004-20260825 (https://download.01.org/0day-ci/archive/20260825/202608250447.gGkRwNAl-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260825/202608250447.gGkRwNAl-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202608250447.gGkRwNAl-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/mailbox/axiado-mailbox.c: In function 'axiado_mbox_probe': >> drivers/mailbox/axiado-mailbox.c:325:39: warning: '-errors' directive output may be truncated writing 7 bytes into a region of size between 2 and 11 [-Wformat-truncation=] snprintf(name, sizeof(name), "chan%u-errors", i); ^~~~~~~ drivers/mailbox/axiado-mailbox.c:325:3: note: 'snprintf' output between 13 and 22 bytes into a destination of size 16 snprintf(name, sizeof(name), "chan%u-errors", i); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +325 drivers/mailbox/axiado-mailbox.c 266 267 static int axiado_mbox_probe(struct platform_device *pdev) 268 { 269 const struct axiado_mbox_data *drv_data; 270 struct axiado_channel_data *ch_data; 271 struct device *dev = &pdev->dev; 272 struct axiado_mbox *mb; 273 unsigned int irq_idx = 0; 274 unsigned int rx_chan; 275 unsigned int i; 276 int ret; 277 278 drv_data = device_get_match_data(dev); 279 if (!drv_data) 280 return -ENODEV; 281 282 mb = devm_kzalloc(dev, sizeof(*mb), GFP_KERNEL); 283 if (!mb) 284 return -ENOMEM; 285 286 mb->mbox.dev = dev; 287 mb->mbox.num_chans = drv_data->num_chans; 288 289 mb->mbox.chans = devm_kcalloc(&pdev->dev, 290 drv_data->num_chans, 291 sizeof(*mb->mbox.chans), 292 GFP_KERNEL); 293 if (!mb->mbox.chans) 294 return -ENOMEM; 295 296 mb->tx_base = devm_platform_ioremap_resource_byname(pdev, "tx"); 297 if (IS_ERR(mb->tx_base)) 298 return PTR_ERR(mb->tx_base); 299 300 mb->rx_base = devm_platform_ioremap_resource_byname(pdev, "rx"); 301 if (IS_ERR(mb->rx_base)) 302 return PTR_ERR(mb->rx_base); 303 304 ch_data = devm_kcalloc(&pdev->dev, 305 drv_data->num_chans, 306 sizeof(*ch_data), 307 GFP_KERNEL); 308 if (!ch_data) 309 return -ENOMEM; 310 311 mb->debugfs_dir = debugfs_create_dir(dev_name(dev), NULL); 312 ret = devm_add_action_or_reset(dev, axiado_mbox_debugfs_remove, 313 mb->debugfs_dir); 314 if (ret) 315 return ret; 316 317 for (i = 0; i < drv_data->num_chans; i++) { 318 char name[16]; 319 320 ch_data[i].channel_num = i; 321 ch_data[i].chan = &mb->mbox.chans[i]; 322 323 mb->mbox.chans[i].con_priv = &ch_data[i]; 324 > 325 snprintf(name, sizeof(name), "chan%u-errors", i); 326 debugfs_create_atomic_t(name, 0444, mb->debugfs_dir, 327 &ch_data[i].fifo_errors); 328 329 if (i < AXIADO_MBOX_TX_CHANS) { 330 ch_data[i].mbox_reg = mb->tx_base + (i * AXIADO_MBOX_CHAN_STRIDE); 331 ch_data[i].csr_reg = mb->tx_base + AXIADO_MBOX_TX_REG_STRIDE + 332 (i * AXIADO_MBOX_CHAN_STRIDE); 333 ch_data[i].irq = -1; 334 continue; 335 } 336 337 ch_data[i].rx_buffer = devm_kzalloc(dev, drv_data->msg_size, 338 GFP_KERNEL); 339 if (!ch_data[i].rx_buffer) 340 return -ENOMEM; 341 342 rx_chan = i - AXIADO_MBOX_TX_CHANS; 343 ch_data[i].mbox_reg = mb->rx_base + 344 (rx_chan * AXIADO_MBOX_CHAN_STRIDE); 345 ch_data[i].csr_reg = mb->rx_base + AXIADO_MBOX_RX_REG_STRIDE + 346 (rx_chan * AXIADO_MBOX_CHAN_STRIDE); 347 ch_data[i].irq = platform_get_irq(pdev, irq_idx++); 348 if (ch_data[i].irq < 0) 349 return dev_err_probe(dev, ch_data[i].irq, 350 "Failed to get IRQ for channel %u\n", i); 351 352 ret = devm_request_threaded_irq(dev, ch_data[i].irq, NULL, 353 axiado_rx_thread, 354 IRQF_ONESHOT | IRQF_NO_AUTOEN, 355 dev_name(dev), &ch_data[i]); 356 if (ret) 357 return dev_err_probe(dev, ret, 358 "Failed to request IRQ for channel %u\n", i); 359 360 dev_dbg(dev, "RX chan %u -> irq %d\n", i, ch_data[i].irq); 361 } 362 363 platform_set_drvdata(pdev, mb); 364 mb->drv_data = drv_data; 365 mb->mbox.ops = &axiado_mbox_chan_ops; 366 mb->mbox.txdone_irq = false; 367 mb->mbox.txdone_poll = true; 368 mb->mbox.txpoll_period = 5; 369 370 return devm_mbox_controller_register(dev, &mb->mbox); 371 } 372 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki