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Re: [PATCH] loadpolicy: Verifies memory allocation during policy loading
- To: yskelg@xxxxxxxxx, "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 19 Jun 2024 14:04:26 +0200
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- Cc: Austin Kim <austindh.kim@xxxxxxxxx>, shjy180909@xxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, Anthony PERARD <anthony@xxxxxxxxxxxxxx>
- Delivery-date: Wed, 19 Jun 2024 12:04:42 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 27.05.2024 14:54, yskelg@xxxxxxxxx wrote:
> --- a/tools/flask/utils/loadpolicy.c
> +++ b/tools/flask/utils/loadpolicy.c
> @@ -58,6 +58,11 @@ int main (int argCnt, const char *args[])
> }
>
> polMemCp = malloc(info.st_size);
> + if (!polMemCp) {
> + fprintf(stderr, "Error occurred allocating %ld bytes\n",
> info.st_size);
> + ret = -ENOMEM;
I don't think -ENOMEM is valid to use here. See neighboring code. Nevertheless
it is correct that a check should be here.
As to %ld - is that portably usable with an off_t value?
In any event, Daniel, really your turn to review / ack. I'm looking at this
merely because I found this and another bugfix still sit in waiting-for-ack
state.
Jan
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