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Report the correct and wrong sizes on sized dealloc bug detection.

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This commit is contained in:
Qi Wang
2021-02-05 17:26:45 -08:00
committed by Qi Wang
parent f3b2668b32
commit 041145c272
5 changed files with 30 additions and 16 deletions
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7
include/jemalloc/internal/arena_inlines_b.h
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@@ -228,9 +228,10 @@ large_dalloc_safety_checks(edata_t *edata, void *ptr, szind_t szind) {
(uintptr_t)edata_addr_get(edata));
return true;
}
if (unlikely(sz_index2size(szind) != edata_usize_get(edata))) {
safety_check_fail_sized_dealloc(/* current_dealloc */ true,
ptr);
size_t input_size = sz_index2size(szind);
if (unlikely(input_size != edata_usize_get(edata))) {
safety_check_fail_sized_dealloc(/* current_dealloc */ true, ptr,
/* true_size */ edata_usize_get(edata), input_size);
return true;
}

3
include/jemalloc/internal/safety_check.h
View File

@@ -1,7 +1,8 @@
#ifndef JEMALLOC_INTERNAL_SAFETY_CHECK_H
#define JEMALLOC_INTERNAL_SAFETY_CHECK_H
void safety_check_fail_sized_dealloc(bool current_dealloc, const void *ptr);
void safety_check_fail_sized_dealloc(bool current_dealloc, const void *ptr,
size_t true_size, size_t input_size);
void safety_check_fail(const char *format, ...);
/* Can set to NULL for a default. */
void safety_check_set_abort(void (*abort_fn)(const char *));