| Message ID | 20220416105801.88708-1-liujian56@huawei.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Enlarge offset check value in bpf_skb_load_bytes | expand |
Hello: This series was applied to bpf/bpf-next.git (master) by Daniel Borkmann <daniel@iogearbox.net>: On Sat, 16 Apr 2022 18:57:58 +0800 you wrote: > The data length of skb frags + frag_list may be greater than 0xffff, > and skb_header_pointer can not handle negative offset. > So here INT_MAX is used to check the validity of offset. > > And add the test case for the change. > > Liu Jian (3): > net: Enlarge offset check value from 0xffff to INT_MAX in > bpf_skb_load_bytes > net: change skb_ensure_writable()'s write_len param to unsigned int > type > selftests: bpf: add test for skb_load_bytes > > [...] Here is the summary with links: - [bpf-next,v4,1/3] net: Enlarge offset check value from 0xffff to INT_MAX in bpf_skb_load_bytes https://git.kernel.org/bpf/bpf-next/c/45969b4152c1 - [bpf-next,v4,2/3] net: change skb_ensure_writable()'s write_len param to unsigned int type https://git.kernel.org/bpf/bpf-next/c/92ece28072f1 - [bpf-next,v4,3/3] selftests: bpf: add test for skb_load_bytes https://git.kernel.org/bpf/bpf-next/c/127e7dca427b You are awesome, thank you!
The data length of skb frags + frag_list may be greater than 0xffff, and skb_header_pointer can not handle negative offset. So here INT_MAX is used to check the validity of offset. And add the test case for the change. Liu Jian (3): net: Enlarge offset check value from 0xffff to INT_MAX in bpf_skb_load_bytes net: change skb_ensure_writable()'s write_len param to unsigned int type selftests: bpf: add test for skb_load_bytes include/linux/skbuff.h | 2 +- net/core/filter.c | 4 +- net/core/skbuff.c | 2 +- .../selftests/bpf/prog_tests/skb_load_bytes.c | 45 +++++++++++++++++++ .../selftests/bpf/progs/skb_load_bytes.c | 19 ++++++++ 5 files changed, 68 insertions(+), 4 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