diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/verifier_movsx.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/verifier_movsx.c b/tools/testing/selftests/bpf/progs/verifier_movsx.c index 9568089932d7..be6f69a6b659 100644 --- a/tools/testing/selftests/bpf/progs/verifier_movsx.c +++ b/tools/testing/selftests/bpf/progs/verifier_movsx.c @@ -198,6 +198,28 @@ l0_%=: \ : __clobber_all); } +SEC("socket") +__description("MOV64SX, S16, R10 Sign Extension") +__failure __msg("R1 type=scalar expected=fp, pkt, pkt_meta, map_key, map_value, mem, ringbuf_mem, buf, trusted_ptr_") +__failure_unpriv __msg_unpriv("R10 sign-extension part of pointer") +__naked void mov64sx_s16_r10(void) +{ + asm volatile (" \ + r1 = 553656332; \ + *(u32 *)(r10 - 8) = r1; \ + r1 = (s16)r10; \ + r1 += -8; \ + r2 = 3; \ + if r2 <= r1 goto l0_%=; \ +l0_%=: \ + call %[bpf_trace_printk]; \ + r0 = 0; \ + exit; \ +" : + : __imm(bpf_trace_printk) + : __clobber_all); +} + #else SEC("socket") |