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futex: Sanitize futex ops argument types

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Change futex_atomic_op_inuser and futex_atomic_cmpxchg_inatomic
prototypes to use u32 types for the futex as this is the data type the
futex core code uses all over the place.

Signed-off-by: Michel Lespinasse <walken@google.com>
Cc: Darren Hart <darren@dvhart.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <20110311025058.GD26122@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Michel Lespinasse
2011-03-10 18:50:58 -08:00
committed by Thomas Gleixner
parent 37a9d912b2
commit 8d7718aa08
20 changed files with 116 additions and 110 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
arch/sh/include/asm/futex-irq.h
View File

@@ -3,7 +3,7 @@
#include <asm/system.h>
static inline int atomic_futex_op_xchg_set(int oparg, int __user *uaddr,
static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
@@ -20,7 +20,7 @@ static inline int atomic_futex_op_xchg_set(int oparg, int __user *uaddr,
return ret;
}
static inline int atomic_futex_op_xchg_add(int oparg, int __user *uaddr,
static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
@@ -37,7 +37,7 @@ static inline int atomic_futex_op_xchg_add(int oparg, int __user *uaddr,
return ret;
}
static inline int atomic_futex_op_xchg_or(int oparg, int __user *uaddr,
static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
@@ -54,7 +54,7 @@ static inline int atomic_futex_op_xchg_or(int oparg, int __user *uaddr,
return ret;
}
static inline int atomic_futex_op_xchg_and(int oparg, int __user *uaddr,
static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
@@ -71,7 +71,7 @@ static inline int atomic_futex_op_xchg_and(int oparg, int __user *uaddr,
return ret;
}
static inline int atomic_futex_op_xchg_xor(int oparg, int __user *uaddr,
static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr,
int *oldval)
{
unsigned long flags;
@@ -88,12 +88,13 @@ static inline int atomic_futex_op_xchg_xor(int oparg, int __user *uaddr,
return ret;
}
static inline int atomic_futex_op_cmpxchg_inatomic(int *uval,
int __user *uaddr,
int oldval, int newval)
static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval,
u32 __user *uaddr,
u32 oldval, u32 newval)
{
unsigned long flags;
int ret, prev = 0;
int ret;
u32 prev = 0;
local_irq_save(flags);

10
arch/sh/include/asm/futex.h
View File

@@ -10,7 +10,7 @@
/* XXX: UP variants, fix for SH-4A and SMP.. */
#include <asm/futex-irq.h>
static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@@ -21,7 +21,7 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
pagefault_disable();
@@ -65,10 +65,10 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
}
static inline int
futex_atomic_cmpxchg_inatomic(int *uval, int __user *uaddr,
int oldval, int newval)
futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
return atomic_futex_op_cmpxchg_inatomic(uval, uaddr, oldval, newval);