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[parisc, s390, sparc64] no need for access_ok() in futex handling

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access_ok() is always true on those

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2020-02-16 10:26:50 -05:00
parent 0bea4f7beb
commit dc88588990
3 changed files with 0 additions and 7 deletions
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3
arch/parisc/include/asm/futex.h
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@@ -39,9 +39,6 @@ arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
int oldval, ret; int oldval, ret;
u32 tmp; u32 tmp;
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
_futex_spin_lock_irqsave(uaddr, &flags); _futex_spin_lock_irqsave(uaddr, &flags);
ret = -EFAULT; ret = -EFAULT;

2
arch/s390/include/asm/futex.h
View File

@@ -28,8 +28,6 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
int oldval = 0, newval, ret; int oldval = 0, newval, ret;
mm_segment_t old_fs; mm_segment_t old_fs;
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
old_fs = enable_sacf_uaccess(); old_fs = enable_sacf_uaccess();
switch (op) { switch (op) {
case FUTEX_OP_SET: case FUTEX_OP_SET:

2
arch/sparc/include/asm/futex_64.h
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@@ -35,8 +35,6 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
{ {
int oldval = 0, ret, tem; int oldval = 0, ret, tem;
if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
if (unlikely((((unsigned long) uaddr) & 0x3UL))) if (unlikely((((unsigned long) uaddr) & 0x3UL)))
return -EINVAL; return -EINVAL;