From ef5fd33120ca2b5a0a8a3e282224e67ac93f44a2 Mon Sep 17 00:00:00 2001 From: Dustin Spicuzza Date: Mon, 14 Jun 2021 15:21:01 -0400 Subject: Add debug output to alert user to calibration progress/issues (#969) --- src/afl-fuzz-run.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'src') diff --git a/src/afl-fuzz-run.c b/src/afl-fuzz-run.c index 758bad25..fb0b5ead 100644 --- a/src/afl-fuzz-run.c +++ b/src/afl-fuzz-run.c @@ -355,6 +355,8 @@ u8 calibrate_case(afl_state_t *afl, struct queue_entry *q, u8 *use_mem, for (afl->stage_cur = 0; afl->stage_cur < afl->stage_max; ++afl->stage_cur) { + if (unlikely(afl->debug)) { DEBUGF("calibration stage %d/%d\n", afl->stage_cur+1, afl->stage_max); } + u64 cksum; write_to_testcase(afl, use_mem, q->len); @@ -402,6 +404,15 @@ u8 calibrate_case(afl_state_t *afl, struct queue_entry *q, u8 *use_mem, } + if (unlikely(!var_detected)) { + // note: from_queue seems to only be set during initialization + if (afl->afl_env.afl_no_ui || from_queue) { + WARNF("instability detected during calibration\n"); + } else if (afl->debug) { + DEBUGF("instability detected during calibration\n"); + } + } + var_detected = 1; afl->stage_max = afl->afl_env.afl_cal_fast ? CAL_CYCLES : CAL_CYCLES_LONG; -- cgit 1.4.1