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fix crash for very fast targets

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This commit is contained in:
van Hauser 2020-12-17 22:57:28 +01:00
parent 14c67f15c9
commit fd6bff727a
3 changed files with 8 additions and 0 deletions
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1
docs/Changelog.md
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@ -10,6 +10,7 @@ sending a mail to <afl-users+subscribe@googlegroups.com>.
### Version ++3.01a (release) ### Version ++3.01a (release)
- fix crash for very, very fast targets+systems, thanks for reporting @mhlakhani
- added dummy Makefile to instrumentation/ - added dummy Makefile to instrumentation/
- allow instrumenting LLVMFuzzerTestOneInput - allow instrumenting LLVMFuzzerTestOneInput

5
src/afl-common.c
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@ -26,6 +26,7 @@
#include <stdlib.h> #include <stdlib.h>
#include <stdio.h> #include <stdio.h>
#include <strings.h> #include <strings.h>
#include <math.h>
#include "debug.h" #include "debug.h"
#include "alloc-inl.h" #include "alloc-inl.h"
@ -786,6 +787,10 @@ u8 *u_stringify_float(u8 *buf, double val) {
sprintf(buf, "%0.01f", val); sprintf(buf, "%0.01f", val);
} else if (unlikely(isnan(val) || isfinite(val))) {
strcpy(buf, "999.9");
} else { } else {
return u_stringify_int(buf, (u64)val); return u_stringify_int(buf, (u64)val);

2
src/afl-fuzz-stats.c
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@ -371,6 +371,8 @@ void show_stats(afl_state_t *afl) {
if (!afl->stats_last_execs) { if (!afl->stats_last_execs) {
if (unlikely(cur_ms == afl->start_time)) --afl->start_time;
afl->stats_avg_exec = afl->stats_avg_exec =
((double)afl->fsrv.total_execs) * 1000 / (cur_ms - afl->start_time); ((double)afl->fsrv.total_execs) * 1000 / (cur_ms - afl->start_time);