From 86a8ef168dda766d2f25f15c15c4d3ecf21d0667 Mon Sep 17 00:00:00 2001
From: vanhauser-thc <vh@thc.org>
Date: Fri, 16 Apr 2021 22:58:54 +0200
Subject: [PATCH] fix custom trim for increasing data
---
src/afl-fuzz-mutators.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/src/afl-fuzz-mutators.c b/src/afl-fuzz-mutators.c
index a47b4f5f..c99d9a4d 100644
--- a/src/afl-fuzz-mutators.c
+++ b/src/afl-fuzz-mutators.c
@@ -397,8 +397,14 @@ u8 trim_case_custom(afl_state_t *afl, struct queue_entry *q, u8 *in_buf,
if (likely(retlen && cksum == q->exec_cksum)) {
- q->len = retlen;
+ if (afl_realloc((void **)&in_buf, retlen) == NULL) {
+
+ FATAL("can not allocate memory for trim");
+
+ }
+
memcpy(in_buf, retbuf, retlen);
+ q->len = retlen;
/* Let's save a clean trace, which will be needed by
update_bitmap_score once we're done with the trimming stuff. */
--
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