// SPDX-License-Identifier: GPL-2.0 #include <linux/bpf.h> #include <bpf/bpf_helpers.h> #include "bpf_misc.h" SEC("socket") __description("or_jmp32_k: bit ops + branch on unknown value") __failure __msg("R0 invalid mem access 'scalar'") __naked void or_jmp32_k(void) { asm volatile (" \ r0 = 0xffffffff; \ r0 /= 1; \ r1 = 0; \ w1 = -1; \ w1 >>= 1; \ w0 &= w1; \ w0 |= 2; \ if w0 != 0x7ffffffd goto l1; \ r0 = 1; \ exit; \ l3: \ r0 = 5; \ *(u64*)(r0 - 8) = r0; \ exit; \ l2: \ w0 -= 0xe; \ if w0 == 1 goto l3; \ r0 = 4; \ exit; \ l1: \ w0 -= 0x7ffffff0; \ if w0 s>= 0xe goto l2; \ r0 = 3; \ exit; \ " ::: __clobber_all); } char _license[] SEC("license") = "GPL";