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author | jeff <jeff@FreeBSD.org> | 2002-04-30 07:54:25 +0000 |
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committer | jeff <jeff@FreeBSD.org> | 2002-04-30 07:54:25 +0000 |
commit | 21868731b084d3531fa8d1e49331719a427ff897 (patch) | |
tree | 1933c12e17d4de144c036ea868144a9d350ff76d /sys/kern | |
parent | 009ce05bfe3bd6bf626b80c1af34ea9d38fb180a (diff) | |
download | FreeBSD-src-21868731b084d3531fa8d1e49331719a427ff897.zip FreeBSD-src-21868731b084d3531fa8d1e49331719a427ff897.tar.gz |
Add a new UMA debugging facility. This will overwrite freed memory with
0xdeadc0de and then check for it just before memory is handed off as part
of a new request. This will catch any post free/pre alloc modification of
memory, as well as introduce errors for anything that tries to dereference
it as a pointer.
This code takes the form of special init, fini, ctor and dtor routines that
are specificly used by malloc. It is in a seperate file because additional
debugging aids will want to live here as well.
Diffstat (limited to 'sys/kern')
-rw-r--r-- | sys/kern/kern_malloc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sys/kern/kern_malloc.c b/sys/kern/kern_malloc.c index cfc4472..6ec1111 100644 --- a/sys/kern/kern_malloc.c +++ b/sys/kern/kern_malloc.c @@ -55,6 +55,7 @@ #include <vm/vm_map.h> #include <vm/uma.h> #include <vm/uma_int.h> +#include <vm/uma_dbg.h> #if defined(INVARIANTS) && defined(__i386__) #include <machine/cpu.h> @@ -386,8 +387,13 @@ kmeminit(dummy) int size = kmemzones[indx].kz_size; char *name = kmemzones[indx].kz_name; - kmemzones[indx].kz_zone = uma_zcreate(name, size, NULL, NULL, - NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_MALLOC); + kmemzones[indx].kz_zone = uma_zcreate(name, size, +#ifdef INVARIANTS + trash_ctor, trash_dtor, trash_init, trash_fini, +#else + NULL, NULL, NULL, NULL, +#endif + UMA_ALIGN_PTR, UMA_ZONE_MALLOC); for (;i <= size; i+= KMEM_ZBASE) kmemsize[i >> KMEM_ZSHIFT] = indx; |