| Message ID | ZbeguDTmVrP9SnDr@nixos |
|---|---|
| State | New |
| Headers | show |
| Series | crypto: qat - use kcalloc() instead of kzalloc() | expand |
On 1/29/24 06:57, Lenko Donchev wrote: > We are trying to get rid of all multiplications from allocation > functions to prevent integer overflows[1]. Here the multiplication is > obviously safe, but using kcalloc() is more appropriate and improves > readability. This patch has no effect on runtime behavior. > > Link: https://github.com/KSPP/linux/issues/162 [1] > Link: https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [2] > > Signed-off-by: Lenko Donchev <lenko.donchev@gmail.com> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Thanks!
On Mon, Jan 29, 2024 at 06:57:28AM -0600, Lenko Donchev wrote: > We are trying to get rid of all multiplications from allocation > functions to prevent integer overflows[1]. Here the multiplication is > obviously safe, but using kcalloc() is more appropriate and improves > readability. This patch has no effect on runtime behavior. > > Link: https://github.com/KSPP/linux/issues/162 [1] > Link: https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [2] > > Signed-off-by: Lenko Donchev <lenko.donchev@gmail.com> Thanks for your patch. The same change was already applied to the cryptodev tree about two weeks ago. See 4da3bc65d218 ("crypto: qat - use kcalloc_node() instead of kzalloc_node()") [1]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git/commit/?id=4da3bc65d218605557696109e42cfeee666d601f Regards,
diff --git a/drivers/crypto/intel/qat/qat_common/adf_isr.c b/drivers/crypto/intel/qat/qat_common/adf_isr.c index 3557a0d6dea2..a13d9885d60f 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_isr.c +++ b/drivers/crypto/intel/qat/qat_common/adf_isr.c @@ -272,7 +272,7 @@ static int adf_isr_alloc_msix_vectors_data(struct adf_accel_dev *accel_dev) if (!accel_dev->pf.vf_info) msix_num_entries += hw_data->num_banks; - irqs = kzalloc_node(msix_num_entries * sizeof(*irqs), + irqs = kcalloc_node(msix_num_entries, sizeof(*irqs), GFP_KERNEL, dev_to_node(&GET_DEV(accel_dev))); if (!irqs) return -ENOMEM;
We are trying to get rid of all multiplications from allocation functions to prevent integer overflows[1]. Here the multiplication is obviously safe, but using kcalloc() is more appropriate and improves readability. This patch has no effect on runtime behavior. Link: https://github.com/KSPP/linux/issues/162 [1] Link: https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [2] Signed-off-by: Lenko Donchev <lenko.donchev@gmail.com> --- drivers/crypto/intel/qat/qat_common/adf_isr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)