Commit 9fbde6c8 authored Apr 12, 2023 by Arnaldo Carvalho de Melo

perf env: Use zfree() to reduce chances of use after free



Do defensive programming by using zfree() to initialize freed pointers
to NULL, so that eventual use after free result in a NULL pointer deref
instead of more subtle behaviour.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 313b4c1c

tools/perf/util/env.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -149,7 +149,7 @@ static void perf_env__purge_bpf(struct perf_env *env)
		node = rb_entry(next, struct bpf_prog_info_node, rb_node);
		next = rb_next(&node->rb_node);
		rb_erase(&node->rb_node, root);
		free(node->info_linear);
		zfree(&node->info_linear);
		free(node);
		}