diff options
Diffstat (limited to 'kernel/bpf/core.c')
| -rw-r--r-- | kernel/bpf/core.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index c5bedc82bc1c..67c380cfa9ca 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -177,6 +177,7 @@ noinline u64 __bpf_call_base(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5) { return 0; } +EXPORT_SYMBOL_GPL(__bpf_call_base); /** * __bpf_prog_run - run eBPF program on a given context @@ -449,11 +450,15 @@ select_insn: tail_call_cnt++; - prog = READ_ONCE(array->prog[index]); + prog = READ_ONCE(array->ptrs[index]); if (unlikely(!prog)) goto out; - ARG1 = BPF_R1; + /* ARG1 at this point is guaranteed to point to CTX from + * the verifier side due to the fact that the tail call is + * handeled like a helper, that is, bpf_tail_call_proto, + * where arg1_type is ARG_PTR_TO_CTX. + */ insn = prog->insnsi; goto select_insn; out: |