From 2c651d3ed5e7d7d78338ce542e66ee9fb36a9275 Mon Sep 17 00:00:00 2001
From: zhongtao <zhongtao17@huawei.com>
Date: Sun, 14 May 2023 14:25:22 +0800
Subject: [PATCH 4/9] ensure isulad_io not NULL before close fd

Signed-off-by: zhongtao <zhongtao17@huawei.com>
---
 src/cmd/isulad-shim/process.c | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/src/cmd/isulad-shim/process.c b/src/cmd/isulad-shim/process.c
index 7716c288..6ad50c53 100644
--- a/src/cmd/isulad-shim/process.c
+++ b/src/cmd/isulad-shim/process.c
@@ -194,6 +194,10 @@ static int stdin_cb(int fd, uint32_t events, void *cbdata, struct epoll_descr *d
     } else {
         fd_to = &(p->shim_io->in);
     }
+
+    if (fd_to == NULL || *fd_to == -1) {
+        return EPOLL_LOOP_HANDLE_CONTINUE;
+    }
     w_count = write_nointr_in_total(*fd_to, p->buf, r_count);
     if (w_count < 0) {
         /* When any error occurs, set the write fd -1  */
@@ -797,21 +801,21 @@ static int init_isulad_stdio(process_t *p)
     return SHIM_OK;
 failure:
     if (p->isulad_io != NULL) {
+        if (p->isulad_io->in > 0) {
+            close(p->isulad_io->in);
+        }
+        if (p->isulad_io->out > 0) {
+            close(p->isulad_io->out);
+        }
+        if (p->isulad_io->err > 0) {
+            close(p->isulad_io->err);
+        }
+        if (p->isulad_io->resize > 0) {
+            close(p->isulad_io->resize);
+        }
         free(p->isulad_io);
         p->isulad_io = NULL;
     }
-    if (p->isulad_io->in > 0) {
-        close(p->isulad_io->in);
-    }
-    if (p->isulad_io->out > 0) {
-        close(p->isulad_io->out);
-    }
-    if (p->isulad_io->err > 0) {
-        close(p->isulad_io->err);
-    }
-    if (p->isulad_io->resize > 0) {
-        close(p->isulad_io->resize);
-    }
     return SHIM_ERR;
 }
 
-- 
2.40.1