From 091a67c5272654e22af7fc6071fbe0633afa797e Mon Sep 17 00:00:00 2001 From: phk Date: Mon, 5 May 2003 08:32:53 +0000 Subject: Add two KASSERTS which trigger if free(9) would drag the "memuse" statistic for a malloc bucket under zero. This typically happens if you malloc(9) from one bucket and free to another. --- sys/kern/kern_malloc.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'sys') diff --git a/sys/kern/kern_malloc.c b/sys/kern/kern_malloc.c index 97537d0..7dd4726 100644 --- a/sys/kern/kern_malloc.c +++ b/sys/kern/kern_malloc.c @@ -283,6 +283,9 @@ free(addr, type) if (addr == NULL) return; + KASSERT(ksp->ks_memuse > 0, + ("malloc(9)/free(9) confusion.\n%s", + "Probably freeing with wrong type, but maybe not here.")); size = 0; slab = vtoslab((vm_offset_t)addr & (~UMA_SLAB_MASK)); @@ -318,6 +321,9 @@ free(addr, type) uma_large_free(slab); } mtx_lock(&ksp->ks_mtx); + KASSERT(size <= ksp->ks_memuse, + ("malloc(9)/free(9) confusion.\n%s", + "Probably freeing with wrong type, but maybe not here.")); ksp->ks_memuse -= size; ksp->ks_inuse--; mtx_unlock(&ksp->ks_mtx); -- cgit v1.1