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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2025 Meta Platforms, Inc. and affiliates. */
#include <vmlinux.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"
#if __clang_major__ >= 21 && 0
SEC("socket")
__description("__builtin_trap with simple c code")
__failure __msg("unexpected __bpf_trap() due to uninitialized variable?")
void bpf_builtin_trap_with_simple_c(void)
{
__builtin_trap();
}
#endif
SEC("socket")
__description("__bpf_trap with simple c code")
__failure __msg("unexpected __bpf_trap() due to uninitialized variable?")
void bpf_trap_with_simple_c(void)
{
__bpf_trap();
}
SEC("socket")
__description("__bpf_trap as the second-from-last insn")
__failure __msg("unexpected __bpf_trap() due to uninitialized variable?")
__naked void bpf_trap_at_func_end(void)
{
asm volatile (
"r0 = 0;"
"call %[__bpf_trap];"
"exit;"
:
: __imm(__bpf_trap)
: __clobber_all);
}
SEC("socket")
__description("dead code __bpf_trap in the middle of code")
__success
__naked void dead_bpf_trap_in_middle(void)
{
asm volatile (
"r0 = 0;"
"if r0 == 0 goto +1;"
"call %[__bpf_trap];"
"r0 = 2;"
"exit;"
:
: __imm(__bpf_trap)
: __clobber_all);
}
SEC("socket")
__description("reachable __bpf_trap in the middle of code")
__failure __msg("unexpected __bpf_trap() due to uninitialized variable?")
__naked void live_bpf_trap_in_middle(void)
{
asm volatile (
"r0 = 0;"
"if r0 == 1 goto +1;"
"call %[__bpf_trap];"
"r0 = 2;"
"exit;"
:
: __imm(__bpf_trap)
: __clobber_all);
}
char _license[] SEC("license") = "GPL";
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