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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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14
src/jemalloc.c
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@@ -2751,7 +2751,9 @@ maybe_check_alloc_ctx(tsd_t *tsd, void *ptr, emap_alloc_ctx_t *alloc_ctx) {
&dbg_ctx);
if (alloc_ctx->szind != dbg_ctx.szind) {
safety_check_fail_sized_dealloc(
/* current_dealloc */ true, ptr);
/* current_dealloc */ true, ptr,
/* true_size */ sz_size2index(dbg_ctx.szind),
/* input_size */ sz_size2index(alloc_ctx->szind));
return true;
}
if (alloc_ctx->slab != dbg_ctx.slab) {
@@ -2800,9 +2802,13 @@ isfree(tsd_t *tsd, void *ptr, size_t usize, tcache_t *tcache, bool slow_path) {
if (config_opt_safety_checks) {
/* Small alloc may have !slab (sampled). */
if (alloc_ctx.szind != sz_size2index(usize)) {
safety_check_fail_sized_dealloc(true,
ptr);
if (unlikely(alloc_ctx.szind !=
sz_size2index(usize))) {
safety_check_fail_sized_dealloc(
/* current_dealloc */ true, ptr,
/* true_size */ sz_index2size(
alloc_ctx.szind),
/* input_size */ usize);
}
}
} else {