The data length of skb frags + frag_list may be greater than 0xffff,
and skb_header_pointer can not handle negative offset and negative len.
So here INT_MAX is used to check the validity of offset and len.
And add the test case for the change.
Liu Jian (2):
net: Enlarge offset check value from 0xffff to INT_MAX in
bpf_skb_load_bytes
selftests: bpf: add test for skb_load_bytes
net/core/filter.c | 4 +-
.../selftests/bpf/prog_tests/skb_load_bytes.c | 45 +++++++++++++++++++
.../selftests/bpf/progs/skb_load_bytes.c | 19 ++++++++
3 files changed, 66 insertions(+), 2 deletions(-)
create mode 100644 tools/testing/selftests/bpf/prog_tests/skb_load_bytes.c
create mode 100644 tools/testing/selftests/bpf/progs/skb_load_bytes.c
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2.17.1
