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iio: gts-helper: Fix memory leaks for the error path of iio_gts_build_avail_scale_table()

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commit 369f056889 upstream.

If per_time_scales[i] or per_time_gains[i] kcalloc fails in the for loop
of iio_gts_build_avail_scale_table(), the err_free_out will fail to call
kfree() each time when i is reduced to 0, so all the per_time_scales[0]
and per_time_gains[0] will not be freed, which will cause memory leaks.

Fix it by checking if i >= 0.

Cc: stable@vger.kernel.org
Fixes: 38416c28e1 ("iio: light: Add gain-time-scale helpers")
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20241016012453.2013302-1-ruanjinjie@huawei.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jinjie Ruan
2024-10-16 09:24:53 +08:00
committed by Greg Kroah-Hartman
parent 0ac0beb423
commit b304362ce8
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/industrialio-gts-helper.c
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@@ -313,7 +313,7 @@ static int iio_gts_build_avail_scale_table(struct iio_gts *gts)
return 0;
err_free_out:
for (i--; i; i--) {
for (i--; i >= 0; i--) {
kfree(per_time_scales[i]);
kfree(per_time_gains[i]);
}