mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 08:28:13 +00:00
8b08807d03
test_global_func9 - check valid pointer's scenarios
test_global_func10 - check that a smaller type cannot be passed as a
larger one
test_global_func11 - check that CTX pointer cannot be passed
test_global_func12 - check access to a null pointer
test_global_func13 - check access to an arbitrary pointer value
test_global_func14 - check that an opaque pointer cannot be passed
test_global_func15 - check that a variable has an unknown value after
it was passed to a global function by pointer
test_global_func16 - check access to uninitialized stack memory
test_global_func_args - check read and write operations through a pointer
Signed-off-by: Dmitrii Banshchikov <me@ubique.spb.ru>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210212205642.620788-5-me@ubique.spb.ru
22 lines
315 B
C
22 lines
315 B
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
#include <stddef.h>
|
|
#include <linux/bpf.h>
|
|
#include <bpf/bpf_helpers.h>
|
|
|
|
__noinline int foo(unsigned int *v)
|
|
{
|
|
if (v)
|
|
*v = bpf_get_prandom_u32();
|
|
|
|
return 0;
|
|
}
|
|
|
|
SEC("cgroup_skb/ingress")
|
|
int test_cls(struct __sk_buff *skb)
|
|
{
|
|
unsigned int v = 1;
|
|
|
|
foo(&v);
|
|
|
|
return v;
|
|
}
|