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fix assertion error in huge_arena_auto_thp_switch() when b0 is deleted in unit test

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This commit is contained in:
Shirui Cheng 2025-03-19 17:26:33 -07:00 • committed by Qi Wang
parent a4defdb854
commit 3688dfb5c3
4 changed files with 32 additions and 15 deletions
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9
src/arena.c
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@ -1904,7 +1904,7 @@ arena_choose_huge(tsd_t *tsd) {
}
bool
arena_init_huge(arena_t *a0) {
arena_init_huge(tsdn_t *tsdn, arena_t *a0) {
bool huge_enabled;
assert(huge_arena_ind == 0);
@ -1922,13 +1922,18 @@ arena_init_huge(arena_t *a0) {
/* a0 init happened before malloc_conf_init. */
atomic_store_zu(&a0->pa_shard.pac.oversize_threshold,
oversize_threshold, ATOMIC_RELAXED);
/* Initialize huge arena THP settings for PAC. */
/* Initialize huge_arena_pac_thp fields. */
base_t *b0 = a0->base;
/* Make sure that b0 thp auto-switch won't happen concurrently here. */
malloc_mutex_lock(tsdn, &b0->mtx);
(&huge_arena_pac_thp)->thp_madvise = opt_huge_arena_pac_thp &&
metadata_thp_enabled() && (opt_thp == thp_mode_default) &&
(init_system_thp_mode == thp_mode_default);
(&huge_arena_pac_thp)->auto_thp_switched = b0->auto_thp_switched;
malloc_mutex_init(&(&huge_arena_pac_thp)->lock, "pac_thp",
WITNESS_RANK_LEAF, malloc_mutex_rank_exclusive);
edata_list_active_init(&(&huge_arena_pac_thp)->thp_lazy_list);
malloc_mutex_unlock(tsdn, &b0->mtx);
huge_enabled = true;
}