From fae760fc9e4c63385c24fe07e5d5c3ab077b56bf Mon Sep 17 00:00:00 2001 From: Leon Weiß Date: Fri, 23 Feb 2024 13:39:46 +0100 Subject: Add upper and lower safety margins --- src/afl-fuzz.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'src/afl-fuzz.c') diff --git a/src/afl-fuzz.c b/src/afl-fuzz.c index 803a1acc..08f716fa 100644 --- a/src/afl-fuzz.c +++ b/src/afl-fuzz.c @@ -2496,6 +2496,15 @@ int main(int argc, char **argv_orig, char **envp) { if ((afl->queue_buf[entry]->exec_us/1000) > max_ms) max_ms = afl->queue_buf[entry]->exec_us/1000; + // Add 20% as a safety margin, capped to exec_tmout given in -t option + max_ms *= 1.2; + if(max_ms > afl->fsrv.exec_tmout) + max_ms = afl->fsrv.exec_tmout; + + // Ensure that there is a sensible timeout even for very fast binaries + if(max_ms < 5) + max_ms = 5; + afl->fsrv.exec_tmout = max_ms; afl->timeout_given = 1; -- cgit 1.4.1