[PATCH v2 1/7] malloc: Add check for top size corruption.

[Andreas Schwab]

On Nov 07 2017, Istvan Kurucsai <pistukem@gmail.com> wrote:

> diff --git a/malloc/malloc.c b/malloc/malloc.c
> index f94d51c..4a30c42 100644
> --- a/malloc/malloc.c
> +++ b/malloc/malloc.c
> @@ -4078,6 +4078,10 @@ _int_malloc (mstate av, size_t bytes)
>  
>        if ((unsigned long) (size) >= (unsigned long) (nb + MINSIZE))
>          {
> +          if (__glibc_unlikely ((unsigned long) (size) > 
> +                                (unsigned long) (av->system_mem)))

Line break before operator, not after.  Redundant parens.

> +            malloc_printerr("malloc(): corrupted top chunk");

Space before paren.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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