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X-CSE-ConnectionGUID: UUTrl8hoQ6S6DSUSt8FkDg== X-CSE-MsgGUID: loRp1oupQz+HAJ5IsCEjnQ== X-IronPort-AV: E=McAfee;i="6800,10657,11825"; a="93546282" X-IronPort-AV: E=Sophos;i="6.24,219,1774335600"; d="scan'208";a="93546282" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jun 2026 11:19:02 -0700 X-CSE-ConnectionGUID: vqwsPFdBRZuUGdRDE93sQA== X-CSE-MsgGUID: 77VtZe84TG2qBvERRxMMdw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,219,1774335600"; d="scan'208";a="273367847" Received: from lkp-server02.sh.intel.com (HELO ea128546eb3d) ([10.239.97.151]) by fmviesa001.fm.intel.com with ESMTP; 22 Jun 2026 11:19:01 -0700 Received: from kbuild by ea128546eb3d with local (Exim 4.98.2) (envelope-from ) id 1wbjEQ-000000001gn-2x0U; Mon, 22 Jun 2026 18:18:52 +0000 Date: Tue, 23 Jun 2026 02:15:26 +0800 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Dan Carpenter Subject: [linux-next:master 865/14705] drivers/iio/adc/ad4130.c:1527 ad4130_validate_diff_channel() error: buffer overflow 'st->pins_fn' 16 <= 29 Message-ID: <202606230258.7nyjvsEO-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev TO: Jonathan Santos CC: Jonathan Cameron CC: Andy Shevchenko tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 3ce97bd3c4f18608335e709c24d6a40e7036cab8 commit: 71c1a1b376b3a7520c8f59f81ab6a28d77938ff5 [865/14705] iio: adc: ad4130: introduce chip info for future multidevice support :::::: branch date: 3 days ago :::::: commit date: 8 weeks ago config: openrisc-randconfig-r071-20260622 (https://download.01.org/0day-ci/archive/20260623/202606230258.7nyjvsEO-lkp@intel.com/config) compiler: or1k-linux-gcc (GCC) 16.1.0 smatch: v0.5.0-9185-gbcc58b9c 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 | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202606230258.7nyjvsEO-lkp@intel.com/ New smatch warnings: drivers/iio/adc/ad4130.c:1527 ad4130_validate_diff_channel() error: buffer overflow 'st->pins_fn' 16 <= 29 Old smatch warnings: drivers/iio/adc/ad4130.c:1530 ad4130_validate_diff_channel() error: buffer overflow 'st->pins_fn' 16 <= 29 drivers/iio/adc/ad4130.c:1532 ad4130_validate_diff_channel() error: buffer overflow 'st->pins_fn' 16 <= 29 vim +1527 drivers/iio/adc/ad4130.c 62094060cf3acaf Cosmin Tanislav 2022-10-21 1515 62094060cf3acaf Cosmin Tanislav 2022-10-21 1516 static int ad4130_validate_diff_channel(struct ad4130_state *st, u32 pin) 62094060cf3acaf Cosmin Tanislav 2022-10-21 1517 { 62094060cf3acaf Cosmin Tanislav 2022-10-21 1518 struct device *dev = &st->spi->dev; 62094060cf3acaf Cosmin Tanislav 2022-10-21 1519 62094060cf3acaf Cosmin Tanislav 2022-10-21 1520 if (pin >= AD4130_MAX_DIFF_INPUTS) 62094060cf3acaf Cosmin Tanislav 2022-10-21 1521 return dev_err_probe(dev, -EINVAL, 6abcb19e0a6a371 Colin Ian King 2022-11-04 1522 "Invalid differential channel %u\n", pin); 62094060cf3acaf Cosmin Tanislav 2022-10-21 1523 71c1a1b376b3a75 Jonathan Santos 2026-04-01 1524 if (pin >= st->chip_info->max_analog_pins) 62094060cf3acaf Cosmin Tanislav 2022-10-21 1525 return 0; 62094060cf3acaf Cosmin Tanislav 2022-10-21 1526 62094060cf3acaf Cosmin Tanislav 2022-10-21 @1527 if (st->pins_fn[pin] == AD4130_PIN_FN_SPECIAL) 62094060cf3acaf Cosmin Tanislav 2022-10-21 1528 return dev_err_probe(dev, -EINVAL, 62094060cf3acaf Cosmin Tanislav 2022-10-21 1529 "Pin %u already used with fn %u\n", pin, 62094060cf3acaf Cosmin Tanislav 2022-10-21 1530 st->pins_fn[pin]); 62094060cf3acaf Cosmin Tanislav 2022-10-21 1531 62094060cf3acaf Cosmin Tanislav 2022-10-21 1532 st->pins_fn[pin] |= AD4130_PIN_FN_DIFF; 62094060cf3acaf Cosmin Tanislav 2022-10-21 1533 62094060cf3acaf Cosmin Tanislav 2022-10-21 1534 return 0; 62094060cf3acaf Cosmin Tanislav 2022-10-21 1535 } 62094060cf3acaf Cosmin Tanislav 2022-10-21 1536 :::::: The code at line 1527 was first introduced by commit :::::: 62094060cf3acaf52e277457d807ea753269b89e iio: adc: ad4130: add AD4130 driver :::::: TO: Cosmin Tanislav :::::: CC: Jonathan Cameron -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki