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// SPDX-License-Identifier: GPL-2.0
#include <vmlinux.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"
SEC("iter/bpf_map_elem")
__description("PTR_TO_BUF: reject negative const offset")
__failure
__msg("invalid negative rdwr buffer offset")
__naked void ptr_to_buf_reject_negative_const_offset(void)
{
asm volatile ("r0 = 0; \
r2 = *(u64 *)(r1 + %[value_off]); \
if r2 == 0 goto l0_%=; \
r2 += -8; \
r0 = *(u64 *)(r2 + 0); \
l0_%=: \
exit; \
"
:
: __imm_const(value_off,
offsetof(struct bpf_iter__bpf_map_elem, value))
: __clobber_all);
}
char _license[] SEC("license") = "GPL";
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