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EXPERIMENT: don't flush tbs on loadvm

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This should speed up fuzzing somewhat, but could also create
use-after-free bugs.
This commit is contained in:
Alwin Berger 2022-01-09 22:44:41 +01:00
parent 5a1cf4d873
commit b781a3ebce
1 changed files with 5 additions and 0 deletions
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5
cpu.c
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@ -239,7 +239,12 @@ static int cpu_common_post_load(void *opaque, int version_id)
* memory we've translated code from. So we must flush all TBs, * memory we've translated code from. So we must flush all TBs,
* which will now be stale. * which will now be stale.
*/ */
/* Begin LibAFL instrumentation */
// Do not flush old tbs on loadvm, when fuzzing in system-mode
#if !defined(CONFIG_USER_ONLY) && defined(AS_SHARED_LIB)
tb_flush(cpu); tb_flush(cpu);
#endif
/* End LibAFL instrumentation */
return 0; return 0;
} }