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iio: core: Switch to krealloc_array()

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Let the krealloc_array() copy the original data and
check for a multiplication overflow.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20230724110204.46285-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Andy Shevchenko 2023-07-24 14:02:03 +03:00 committed by Jonathan Cameron
parent 971ddd4b4d
commit 5a0821e0e3
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/industrialio-core.c
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@ -1474,7 +1474,7 @@ int iio_device_register_sysfs_group(struct iio_dev *indio_dev,
const struct attribute_group **new, **old = iio_dev_opaque->groups;
unsigned int cnt = iio_dev_opaque->groupcounter;
new = krealloc(old, sizeof(*new) * (cnt + 2), GFP_KERNEL);
new = krealloc_array(old, cnt + 2, sizeof(*new), GFP_KERNEL);
if (!new)
return -ENOMEM;