Hi Theo,
On Fri, May 27, 2022 at 5:33 PM Theo de Raadt <[email protected]> wrote:
>
> I think this is the fix. The first bit is walking off the list.
> The 2nd part might help for programs which call libpcap repeatedly.
I've just applied the patch and recompiled libpcap. It seems to work:
# tcpdump -nl -i bge0 -F /tmp/filter.cf
tcpdump: listening on bge0, link-type EN10MB
Thanks!
-Kor
>
> Index: gencode.c
> ===================================================================
> RCS file: /cvs/src/lib/libpcap/gencode.c,v
> retrieving revision 1.61
> diff -u -r1.61 gencode.c
> --- gencode.c 28 Mar 2022 02:58:06 -0000 1.61
> +++ gencode.c 27 May 2022 20:30:53 -0000
> @@ -207,12 +207,13 @@
> for (i = 0; i <= cur_membag; i++) {
> if (membag[i].ptrs == NULL)
> continue;
> - for (j = 0; j <= membag[i].slot; j++)
> + for (j = 0; j < membag[i].slot; j++)
> free(membag[i].ptrs[j]);
> free(membag[i].ptrs);
> membag[i].ptrs = NULL;
> membag[i].slot = membag[i].total = 0;
> }
> + cur_membag = 0;
> }
>
> /*
