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Fix CodeQL findings: size_t flush checksum + arena_get asserts

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Slobodan Predolac 2026-06-05 11:52:39 -07:00
parent c32f9e7e08
commit 38099e3901
3 changed files with 4 additions and 1 deletions
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3
src/arena.c
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@ -1375,6 +1375,7 @@ arena_ptr_array_flush_impl_large(tsdn_t *tsdn, szind_t binind,
edata_t *edata = item_edata[0].edata;
unsigned cur_arena_ind = edata_arena_ind_get(edata);
arena_t *cur_arena = arena_get(tsdn, cur_arena_ind, false);
assert(cur_arena != NULL);
if (!arena_is_auto(cur_arena)) {
malloc_mutex_lock(tsdn, &cur_arena->large_mtx);
@ -1464,7 +1465,7 @@ arena_ptr_array_flush_impl(tsd_t *tsd, szind_t binind,
* Checks for sized deallocation bugs, failing early rather than
* corrupting metadata.
*/
size_t szind_sum = binind * nflush;
size_t szind_sum = (size_t)binind * nflush;
emap_edata_lookup_batch(tsd, &arena_emap_global, nflush,
&arena_ptr_array_flush_ptr_getter, (void *)arr,
&arena_ptr_array_flush_metadata_visitor, (void *)&szind_sum,

1
src/arenas_management.c
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@ -166,6 +166,7 @@ arena_init(tsdn_t *tsdn, unsigned ind, const arena_config_t *config) {
static void
arena_bind(tsd_t *tsd, unsigned ind, bool internal) {
arena_t *arena = arena_get(tsd_tsdn(tsd), ind, false);
assert(arena != NULL);
arena_nthreads_inc(arena, internal);
if (internal) {

1
src/jemalloc_init.c
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@ -642,6 +642,7 @@ malloc_init_hard(void) {
* need it to set correct value for deferral_allowed.
*/
arena_t *a0 = arena_get(tsd_tsdn(tsd), 0, false);
assert(a0 != NULL);
hpa_shard_opts_t hpa_shard_opts = opt_hpa_opts;
hpa_shard_opts.deferral_allowed = background_thread_enabled();
if (pa_shard_enable_hpa(tsd_tsdn(tsd), &a0->pa_shard,