selftests/bpf: Test using dynptr after freeing the underlying object

Browse source

Make sure the verifier invalidates the dynptr and dynptr slice derived
from an skb after the skb is freed.

Signed-off-by: Amery Hung <ameryhung@gmail.com>
Link: https://lore.kernel.org/r/20260529014936.2811085-14-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

...

This commit is contained in:

Amery Hung 2026-05-28 18:49:36 -07:00 • committed by Alexei Starovoitov

parent 3f75a757a3

commit 60c7c3b880

3 changed files with 212 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

68

tools/testing/selftests/bpf/progs/bpf_qdisc_fail__invalid_dynptr.c

View file

74

tools/testing/selftests/bpf/progs/bpf_qdisc_fail__invalid_dynptr_cross_frame.c

View file

70

tools/testing/selftests/bpf/progs/bpf_qdisc_fail__invalid_dynptr_slice.c

View file