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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 <[email protected]>
Cc: Darren Hart <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Matt Turner <[email protected]>
Cc: Russell King <[email protected]>
Cc: David Howells <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: "James E.J. Bottomley" <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Chris Metcalf <[email protected]>
Cc: Linus Torvalds <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
Michel Lespinasse 2011-03-10 18:50:58 -08:00 • committed by Thomas Gleixner
commit 8d7718aa08
20 changed files with 116 additions and 110 deletions
Download patch file Download diff file Expand all files Collapse all files

12
arch/parisc/include/asm/futex.h
View file

@ -8,7 +8,7 @@
#include <asm/errno.h>
static inline int
futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@ -18,7 +18,7 @@ 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();
@ -51,10 +51,10 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
/* Non-atomic version */
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)
{
int val;
u32 val;
/* futex.c wants to do a cmpxchg_inatomic on kernel NULL, which is
* our gateway page, and causes no end of trouble...
@ -62,7 +62,7 @@ futex_atomic_cmpxchg_inatomic(int *uval, int __user *uaddr,
if (segment_eq(KERNEL_DS, get_fs()) && !uaddr)
return -EFAULT;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
return -EFAULT;
if (get_user(val, uaddr))