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| author |   Andrii Nakryiko <andriin@fb.com> | 2020-08-19 23:14:08 -0700 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2020-08-20 16:45:09 +0200 |
| commit | 9b2f6fecf3b77d2457a13f77a563c07304f15775 (patch) | |
| tree | afc42c68923d9e671ccd9384ef1a0d52ecbf2d2b /net/core | |
| parent | Merge branch 'bpf-umd-debug' (diff) | |
| download | wireguard-linux-9b2f6fecf3b77d2457a13f77a563c07304f15775.tar.xz wireguard-linux-9b2f6fecf3b77d2457a13f77a563c07304f15775.zip | |
libbpf: Fix detection of BPF helper call instruction
BPF_CALL | BPF_JMP32 is explicitly not allowed by verifier for BPF helper
calls, so don't detect it as a valid call. Also drop the check on func_id
pointer, as it's currently always non-null.
Fixes: 109cea5a594f ("libbpf: Sanitize BPF program code for bpf_probe_read_{kernel, user}[_str]")
Reported-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200820061411.1755905-1-andriin@fb.com
Diffstat (limited to 'net/core')
0 files changed, 0 insertions, 0 deletions