summaryrefslogtreecommitdiffstats
path: root/arch/arm
diff options
context:
space:
mode:
authorThomas Gleixner <tglx@linutronix.de>2020-03-28 11:59:24 +0100
committerThomas Gleixner <tglx@linutronix.de>2020-03-28 11:59:24 +0100
commitcf226c42b2d66b0f60d18fc2e44e68091fee6cef (patch)
tree6dae196f26ef862349481dc6fed875e42ded4fb4 /arch/arm
parentm68knommu: Remove mm.h include from uaccess_no.h (diff)
parentx86: get rid of user_atomic_cmpxchg_inatomic() (diff)
downloadlinux-cf226c42b2d66b0f60d18fc2e44e68091fee6cef.tar.xz
linux-cf226c42b2d66b0f60d18fc2e44e68091fee6cef.zip
Merge branch 'uaccess.futex' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs into locking/core
Pull uaccess futex cleanups for Al Viro: Consolidate access_ok() usage and the futex uaccess function zoo.
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/include/asm/futex.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm/include/asm/futex.h b/arch/arm/include/asm/futex.h
index 83c391b597d4..e133da303a98 100644
--- a/arch/arm/include/asm/futex.h
+++ b/arch/arm/include/asm/futex.h
@@ -134,10 +134,12 @@ arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
{
int oldval = 0, ret, tmp;
+ if (!access_ok(uaddr, sizeof(u32)))
+ return -EFAULT;
+
#ifndef CONFIG_SMP
preempt_disable();
#endif
- pagefault_disable();
switch (op) {
case FUTEX_OP_SET:
@@ -159,7 +161,6 @@ arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
ret = -ENOSYS;
}
- pagefault_enable();
#ifndef CONFIG_SMP
preempt_enable();
#endif