diff options
| -rw-r--r-- | tools/testing/selftests/bpf/progs/compute_live_registers.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/compute_live_registers.c b/tools/testing/selftests/bpf/progs/compute_live_registers.c index f3d79aecbf93..6884ab99a421 100644 --- a/tools/testing/selftests/bpf/progs/compute_live_registers.c +++ b/tools/testing/selftests/bpf/progs/compute_live_registers.c @@ -240,6 +240,22 @@ __naked void if2(void) ::: __clobber_all); } +/* Verifier misses that r2 is alive if jset is not handled properly */ +SEC("socket") +__log_level(2) +__msg("2: 012....... (45) if r1 & 0x7 goto pc+1") +__naked void if3_jset_bug(void) +{ + asm volatile ( + "r0 = 1;" + "r2 = 2;" + "if r1 & 0x7 goto +1;" + "exit;" + "r0 = r2;" + "exit;" + ::: __clobber_all); +} + SEC("socket") __log_level(2) __msg("0: .......... (b7) r1 = 0") |