Author: kib
Date: Tue Sep 10 05:17:53 2013
New Revision: 255439
URL: http://svnweb.freebsd.org/changeset/base/255439
Log:
Call free() on the pointer returned from malloc().
Reported and tested by: Oliver Pinter <oliver.p...@gmail.com>
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Approved by: re (delphij)
Modified:
head/sys/dev/cpuctl/cpuctl.c
Modified: head/sys/dev/cpuctl/cpuctl.c
==============================================================================
--- head/sys/dev/cpuctl/cpuctl.c Tue Sep 10 03:48:18 2013
(r255438)
+++ head/sys/dev/cpuctl/cpuctl.c Tue Sep 10 05:17:53 2013
(r255439)
@@ -295,10 +295,10 @@ cpuctl_do_update(int cpu, cpuctl_update_
static int
update_intel(int cpu, cpuctl_update_args_t *args, struct thread *td)
{
- void *ptr = NULL;
+ void *ptr;
uint64_t rev0, rev1;
uint32_t tmp[4];
- int is_bound = 0;
+ int is_bound;
int oldcpu;
int ret;
@@ -312,10 +312,11 @@ update_intel(int cpu, cpuctl_update_args
}
/*
- * 16 byte alignment required.
+ * 16 byte alignment required. Rely on the fact that
+ * malloc(9) always returns the pointer aligned at least on
+ * the size of the allocation.
*/
ptr = malloc(args->size + 16, M_CPUCTL, M_WAITOK);
- ptr = (void *)(16 + ((intptr_t)ptr & ~0xf));
if (copyin(args->data, ptr, args->size) != 0) {
DPRINTF("[cpuctl,%d]: copyin %p->%p of %zd bytes failed",
__LINE__, args->data, ptr, args->size);
@@ -408,10 +409,10 @@ fail:
static int
update_via(int cpu, cpuctl_update_args_t *args, struct thread *td)
{
- void *ptr = NULL;
+ void *ptr;
uint64_t rev0, rev1, res;
uint32_t tmp[4];
- int is_bound = 0;
+ int is_bound;
int oldcpu;
int ret;
@@ -427,8 +428,7 @@ update_via(int cpu, cpuctl_update_args_t
/*
* 4 byte alignment required.
*/
- ptr = malloc(args->size + 16, M_CPUCTL, M_WAITOK);
- ptr = (void *)(16 + ((intptr_t)ptr & ~0xf));
+ ptr = malloc(args->size, M_CPUCTL, M_WAITOK);
if (copyin(args->data, ptr, args->size) != 0) {
DPRINTF("[cpuctl,%d]: copyin %p->%p of %zd bytes failed",
__LINE__, args->data, ptr, args->size);
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