Alexei Starovoitov 19de99f70b
bpf: fix matching of data/data_end in verifier ...
The ctx structure passed into bpf programs is different depending on bpf
program type. The verifier incorrectly marked ctx->data and ctx->data_end
access based on ctx offset only. That caused loads in tracing programs
int bpf_prog(struct pt_regs *ctx) { .. ctx->ax .. }
to be incorrectly marked as PTR_TO_PACKET which later caused verifier
to reject the program that was actually valid in tracing context.
Fix this by doing program type specific matching of ctx offsets.
Fixes: 969bf05eb3goldshtn@gmail.com >
Signed-off-by: Alexei Starovoitov <ast@kernel.org >
Acked-by: Daniel Borkmann <daniel@iogearbox.net >
Signed-off-by: David S. Miller <davem@davemloft.net >
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19de99f70b