From: Martin KaFai Lau <kafai@fb.com>
Date: Wed, 8 Jan 2020 16:34:54 -0800
Subject: bpf: Save PTR_TO_BTF_ID register state when spilling to stack
Patch-mainline: v5.6-rc1
Git-commit: 65726b5b7efae718391752ae8bb85b9843fd83f4
References: bsc#1177028
This patch makes the verifier save the PTR_TO_BTF_ID register state when
spilling to the stack.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200109003454.3854870-1-kafai@fb.com
Acked-by: Gary Lin <glin@suse.com>
---
kernel/bpf/verifier.c | 1 +
1 file changed, 1 insertion(+)
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -1916,6 +1916,7 @@ static bool is_spillable_regtype(enum bp
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;