On Sat, Jan 20, 2024 at 02:34:43PM +0100, Erick Archer wrote: > 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. > > Link: https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [1] > Link: https://github.com/KSPP/linux/issues/162 > Signed-off-by: Erick Archer <erick.archer@xxxxxxx> > --- > arch/mips/alchemy/common/clock.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/mips/alchemy/common/clock.c b/arch/mips/alchemy/common/clock.c > index c01be8c45271..6c8996e20a7d 100644 > --- a/arch/mips/alchemy/common/clock.c > +++ b/arch/mips/alchemy/common/clock.c > @@ -771,7 +771,7 @@ static int __init alchemy_clk_init_fgens(int ctype) > } > id.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE; > > - a = kzalloc((sizeof(*a)) * 6, GFP_KERNEL); > + a = kcalloc(6, sizeof(*a), GFP_KERNEL); > if (!a) > return -ENOMEM; > > -- > 2.25.1 applied to mips-next. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]
