diff options
Diffstat (limited to 'arch/sparc/include/asm/futex_64.h')
| -rw-r--r-- | arch/sparc/include/asm/futex_64.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/sparc/include/asm/futex_64.h b/arch/sparc/include/asm/futex_64.h index 0865ce77ec00..84fffaaf59d3 100644 --- a/arch/sparc/include/asm/futex_64.h +++ b/arch/sparc/include/asm/futex_64.h @@ -35,11 +35,11 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval, { int oldval = 0, ret, tem; + if (!access_ok(uaddr, sizeof(u32))) + return -EFAULT; if (unlikely((((unsigned long) uaddr) & 0x3UL))) return -EINVAL; - pagefault_disable(); - switch (op) { case FUTEX_OP_SET: __futex_cas_op("mov\t%4, %1", ret, oldval, uaddr, oparg); @@ -60,8 +60,6 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval, ret = -ENOSYS; } - pagefault_enable(); - if (!ret) *oval = oldval; |