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| author |   Len Baker <len.baker@gmx.com> | 2021-09-04 15:17:14 +0200 |
|---|---|---|
| committer |   Stephen Boyd <sboyd@kernel.org> | 2022-05-20 20:40:07 -0700 |
| commit | 37004db2a560d7f0641bc81f0d405b8b9849e797 (patch) | |
| tree | 2ab788b386bafc7f2825dd24257f8081333a62bd /drivers/clk/ti | |
| parent | clk: keystone: syscon-clk: Add support for AM62 epwm-tbclk (diff) | |
| download | linux-dev-37004db2a560d7f0641bc81f0d405b8b9849e797.tar.xz linux-dev-37004db2a560d7f0641bc81f0d405b8b9849e797.zip | |
clk: ti: composite: Prefer kcalloc over open coded arithmetic
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, 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>
Link: https://lore.kernel.org/r/20210904131714.2312-1-len.baker@gmx.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/ti')
| -rw-r--r-- | drivers/clk/ti/composite.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/clk/ti/composite.c b/drivers/clk/ti/composite.c index 8d60319be368..779b9900f636 100644 --- a/drivers/clk/ti/composite.c +++ b/drivers/clk/ti/composite.c @@ -255,7 +255,7 @@ int __init ti_clk_add_component(struct device_node *node, struct clk_hw *hw, return -EINVAL; } - parent_names = kzalloc((sizeof(char *) * num_parents), GFP_KERNEL); + parent_names = kcalloc(num_parents, sizeof(char *), GFP_KERNEL); if (!parent_names) return -ENOMEM; |