diff --git a/backport-cat-fix-plain-cat-bug.patch b/backport-cat-fix-plain-cat-bug.patch
new file mode 100644
index 0000000000000000000000000000000000000000..d7163a47e9dc56fe1febbb4edd619ad4881ea3a4
--- /dev/null
+++ b/backport-cat-fix-plain-cat-bug.patch
@@ -0,0 +1,81 @@
+From 7386c291be8e2de115f2e161886e872429edadd7 Mon Sep 17 00:00:00 2001
+From: Paul Eggert <eggert@cs.ucla.edu>
+Date: Fri, 14 Feb 2025 13:10:02 -0800
+Subject: =?UTF-8?q?cat:=20fix=20plain=20=E2=80=98cat=E2=80=99=20bug?=
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+* src/cat.c (main): Do not fail with plain ‘cat’ where input and
+output are both /dev/tty, if the output happens to have O_APPEND set.
+Problem reported by lilydjwg <https://bugs.gnu.org/76255>.
+Also, don’t report an error if the seek position is at or after EOF,
+even if O_APPEND is set.
+---
+ src/cat.c | 26 +++++++++++++-------------
+ 1 file changed, 13 insertions(+), 13 deletions(-)
+
+(limited to 'src/cat.c')
+
+diff --git a/src/cat.c b/src/cat.c
+index 274f844..c022103 100644
+--- a/src/cat.c
++++ b/src/cat.c
+@@ -646,9 +646,15 @@
+   idx_t outsize = io_blksize (stat_buf);
+ 
+   /* Device, I-node number and lazily-acquired flags of the output.  */
+-  dev_t out_dev = stat_buf.st_dev;
+-  ino_t out_ino = stat_buf.st_ino;
++  dev_t out_dev;
++  ino_t out_ino;
+   int out_flags = -2;
++  bool have_out_dev = ! (S_TYPEISSHM (&stat_buf) || S_TYPEISTMO (&stat_buf));
++  if (have_out_dev)
++    {
++      out_dev = stat_buf.st_dev;
++      out_ino = stat_buf.st_ino;
++   }
+ 
+   /* True if the output is a regular file.  */
+   bool out_isreg = S_ISREG (stat_buf.st_mode) != 0;
+@@ -706,22 +712,25 @@
+          output device.  It's better to catch this error earlier
+          rather than later.  */
+ 
+-      if (stat_buf.st_dev == out_dev && stat_buf.st_ino == out_ino)
++      if (! (S_ISFIFO (stat_buf.st_mode) || S_ISSOCK (stat_buf.st_mode)
++             || S_TYPEISSHM (&stat_buf) || S_TYPEISTMO (&stat_buf))
++          && have_out_dev
++          && stat_buf.st_dev == out_dev && stat_buf.st_ino == out_ino)
+         {
+-          if (out_flags < -1)
+-            out_flags = fcntl (STDOUT_FILENO, F_GETFL);
+-          bool exhausting = 0 <= out_flags && out_flags & O_APPEND;
+-          if (!exhausting)
+-            {
+-              off_t in_pos = lseek (input_desc, 0, SEEK_CUR);
+-              if (0 <= in_pos)
+-                exhausting = in_pos < lseek (STDOUT_FILENO, 0, SEEK_CUR);
+-            }
+-          if (exhausting)
++          off_t in_pos = lseek (input_desc, 0, SEEK_CUR);
++          if (0 <= in_pos)
+             {
+-              error (0, 0, _("%s: input file is output file"), quotef (infile));
+-              ok = false;
+-              goto contin;
++              if (out_flags < -1)
++                out_flags = fcntl (STDOUT_FILENO, F_GETFL);
++              int whence = (0 <= out_flags && out_flags & O_APPEND
++                            ? SEEK_END : SEEK_CUR);
++              if (in_pos < lseek (STDOUT_FILENO, 0, whence))
++                {
++                  error (0, 0, _("%s: input file is output file"),
++                         quotef (infile));
++                  ok = false;
++                  goto contin;
++                }
+             }
+         }
+ 
diff --git a/coreutils.spec b/coreutils.spec
index ed545dfe7b8a12a18085c34f1a063be2ffd04960..bca47408505d8ca9101fa725605dfe084900736a 100644
--- a/coreutils.spec
+++ b/coreutils.spec
@@ -1,6 +1,6 @@
 Name:       coreutils
 Version:    9.4
-Release:    13
+Release:    14
 License:    GPLv3+
 Summary:    A set of basic GNU tools commonly used in shell scripts
 Url:        https://www.gnu.org/software/coreutils/
@@ -42,6 +42,7 @@ Patch27:   backport-numfmt-don-t-require-a-suffix-with-from-iec-i.patch
 patch28:   backport-sort-fix-debug-buffer-overrun.patch
 patch29:   backport-tac-avoid-out-of-bounds-access.patch
 Patch30:   backport-yes-avoid-failure-on-CHERI-protected-systems.patch
+Patch31:   backport-cat-fix-plain-cat-bug.patch
 
 Patch9001:   coreutils-9.0-sw.patch
 
@@ -186,6 +187,10 @@ fi
 %{_mandir}/man*/*
 
 %changelog
+* Mon Mar 17 2025 yixiangzhike <yixiangzhike007@163.com> - 9.4-14
+- backport upstream patches
+      fix cat bug appearing in conjunction with gawk
+
 * Wed Mar 12 2025 mahailiang <mahailiang@uniontech.com> - 9.4-13
 - fix sw_64 build error