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vhost: vhost_scsi_handle_vq() should just use copy_from_user()
[firefly-linux-kernel-4.4.55.git]
/
kernel
/
sys.c
diff --git
a/kernel/sys.c
b/kernel/sys.c
index a8c9f5a7dda68f9afd60449a3f9fe0b7d048a6f1..ea9c881098941ecd9bbb42fa69a3ddb958d2ec41 100644
(file)
--- a/
kernel/sys.c
+++ b/
kernel/sys.c
@@
-2210,9
+2210,13
@@
SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
up_write(&me->mm->mmap_sem);
break;
case PR_MPX_ENABLE_MANAGEMENT:
up_write(&me->mm->mmap_sem);
break;
case PR_MPX_ENABLE_MANAGEMENT:
+ if (arg2 || arg3 || arg4 || arg5)
+ return -EINVAL;
error = MPX_ENABLE_MANAGEMENT(me);
break;
case PR_MPX_DISABLE_MANAGEMENT:
error = MPX_ENABLE_MANAGEMENT(me);
break;
case PR_MPX_DISABLE_MANAGEMENT:
+ if (arg2 || arg3 || arg4 || arg5)
+ return -EINVAL;
error = MPX_DISABLE_MANAGEMENT(me);
break;
default:
error = MPX_DISABLE_MANAGEMENT(me);
break;
default: