net/mlx5: DR, Prefer kcalloc over open coded arithmetic

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As noted in the "Deprecated Interfaces, Language Features, Attributes,
and Conventions" documentation [1], size calculations (especially
multiplication) should not be performed in memory allocator (or similar)
function arguments due to the risk of them overflowing. This could lead
to values wrapping around and a smaller allocation being made than the
caller was expecting. Using those allocations could lead to linear
overflows of heap memory and other misbehaviors.

So, refactor the code a bit to use the purpose specific kcalloc()
function instead of the argument size * count in the kzalloc() function.

[1] https://www.kernel.org/doc/html/v5.14/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments

Signed-off-by: Len Baker <len.baker@gmx.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

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Len Baker 2021-09-05 09:49:36 +02:00 • committed by Saeed Mahameed

parent 0885ae1a9d

commit 0e6f3ef469

1 changed files with 6 additions and 2 deletions

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drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c

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