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Diffstat (limited to 'arch/mips/kernel/linux32.c')
-rw-r--r--arch/mips/kernel/linux32.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 9996b6e8458..5f68b220c26 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -230,6 +230,9 @@ sysn32_waitid(int which, compat_pid_t pid,
long ret;
mm_segment_t old_fs = get_fs();
+ if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
+ return -EFAULT;
+
set_fs (KERNEL_DS);
ret = sys_waitid(which, pid, uinfo, options,
uru ? (struct rusage __user *) &ru : NULL);