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-rw-r--r--lib/libc/sys/ioctl.23
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/libc/sys/ioctl.2 b/lib/libc/sys/ioctl.2
index fe1fea2..f5e49d1 100644
--- a/lib/libc/sys/ioctl.2
+++ b/lib/libc/sys/ioctl.2
@@ -131,6 +131,9 @@ references.
or
.Fa argp
is not valid.
+.It Bq Er EFAULT
+.Fa Argp
+points outside the process's allocated address space.
.El
.Sh SEE ALSO
.Xr mt 1 ,
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