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bpf: fix BTF limits

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[ Upstream commit a0791f0df7d212c245761538b17a9ea93607b667 ]

vmlinux BTF has more than 64k types.
Its string section is also at the offset larger than 64k.
Adjust both limits to make in-kernel BTF verifier successfully parse in-kernel BTF.

Fixes: 69b693f0ae ("bpf: btf: Introduce BPF Type Format (BTF)")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alexei Starovoitov 2019-09-17 10:45:38 -07:00 • committed by Greg Kroah-Hartman
commit 62bce3654c
1 changed files with 2 additions and 2 deletions
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4
include/uapi/linux/btf.h
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@ -22,9 +22,9 @@ struct btf_header {
};
/* Max # of type identifier */
#define BTF_MAX_TYPE 0x0000ffff
#define BTF_MAX_TYPE 0x000fffff
/* Max offset into the string section */
#define BTF_MAX_NAME_OFFSET 0x0000ffff
#define BTF_MAX_NAME_OFFSET 0x00ffffff
/* Max # of struct/union/enum members or func args */
#define BTF_MAX_VLEN 0xffff