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192e3aa145
This patch adds a negative test case for the following verifier error.
expected prog array map for tail call
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/aGu0i1X_jII-3aFa@mail.gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
31 lines
650 B
C
31 lines
650 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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struct {
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__uint(type, BPF_MAP_TYPE_ARRAY);
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__uint(max_entries, 1);
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__type(key, __u32);
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__type(value, __u32);
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} map_array SEC(".maps");
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SEC("socket")
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__description("invalid map type for tail call")
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__failure __msg("expected prog array map for tail call")
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__failure_unpriv
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__naked void invalid_map_for_tail_call(void)
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{
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asm volatile (" \
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r2 = %[map_array] ll; \
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r3 = 0; \
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call %[bpf_tail_call]; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_array)
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: __clobber_all);
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}
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char _license[] SEC("license") = "GPL";
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