diff mbox series

[bpf-next,v4,01/11] bpf: Save PTR_TO_BTF_ID register state when spilling to stack

Message ID 20200109003454.3854870-1-kafai@fb.com
State Accepted
Delegated to: BPF Maintainers
Headers show
Series [bpf-next,v4,01/11] bpf: Save PTR_TO_BTF_ID register state when spilling to stack | expand

Commit Message

Martin KaFai Lau Jan. 9, 2020, 12:34 a.m. UTC 
This patch makes the verifier save the PTR_TO_BTF_ID register state when
spilling to the stack.

Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
---
 kernel/bpf/verifier.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 6f63ae7a370c..d433d70022fd 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -1916,6 +1916,7 @@  static bool is_spillable_regtype(enum bpf_reg_type type)
 	case PTR_TO_TCP_SOCK:
 	case PTR_TO_TCP_SOCK_OR_NULL:
 	case PTR_TO_XDP_SOCK:
+	case PTR_TO_BTF_ID:
 		return true;
 	default:
 		return false;