1 files changed, 5 insertions, 8 deletions
diff --git a/debug/read_chk.c b/debug/read_chk.c
index 88404ed205..f738c48d6b 100644
--- a/debug/read_chk.c
+++ b/debug/read_chk.c
@@ -27,15 +27,12 @@
 ssize_t
 __read_chk (int fd, void *buf, size_t nbytes, size_t buflen)
 {
-  /* In case NBYTES is greater than BUFLEN, we read BUFLEN+1 bytes.
-     This might overflow the buffer but the damage is reduced to just
-     one byte.  And the program will terminate right away.  */
+  if (nbytes > buflen)
+    __chk_fail ();
+
 #ifdef HAVE_INLINED_SYSCALLS
-  ssize_t n = INLINE_SYSCALL (read, 3, fd, buf, MIN (nbytes, buflen + 1));
+  return = INLINE_SYSCALL (read, 3, fd, buf, nbytes);
 #else
-  ssize_t n = __read (fd, buf, MIN (nbytes, buflen + 1));
+  return = __read (fd, buf, nbytes);
 #endif
-  if (n > 0 && (size_t) n > buflen)
-    __chk_fail ();
-  return n;
 }