File _service:tar_scm_kernel_repo:0004-sg_ses-fix-cr... of Package sg3_utils

File _service:tar_scm_kernel_repo:0004-sg_ses-fix-crash-when-m-LEN-252.patch of Package sg3_utils

From bfbefdf2d9aa12107d08d796d6fc78862ab85402 Mon Sep 17 00:00:00 2001
From: Douglas Gilbert <dgilbert@interlog.com>
Date: Sun, 1 Aug 2021 03:14:05 +0000
Subject: [PATCH] sg_ses: fix crash when 'm LEN' < 252

git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@907 6180dd3e-e324-4e3e-922d-17de1ae2f315

fix issue:https://gitee.com/src-openeuler/sg3_utils/issues/I5G05L

memset enc_stat_rsp by its true length

Signed-off-by: wangxiaomeng <wangxiaomeng@kylinos.cn>
---
 src/sg_ses.c               | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/sg_ses.c b/src/sg_ses.c
index b9ac2e4..701359b 100644
--- a/src/sg_ses.c
+++ b/src/sg_ses.c
@@ -5523,7 +5523,7 @@ int
 main(int argc, char * argv[])
 {
     bool have_cgs = false;
-    int k, d_len, res, resid, vb;
+    int k, n, d_len, res, resid, vb;
     int sg_fd = -1;
     int pd_type = 0;
     int ret = 0;
@@ -5757,15 +5757,17 @@ main(int argc, char * argv[])
             }
         }
         clear_scsi_pt_obj(ptvp);
-        memset(enc_stat_rsp, 0, 4096);
+        memset(enc_stat_rsp, 0, enc_stat_rsp_sz);
     }
 #endif
 
     if (ptvp) {
-        ret = sg_ll_request_sense_pt(ptvp, false, enc_stat_rsp,
-                                     REQUEST_SENSE_RESP_SZ, ! op->quiet, vb);
+        n = (enc_stat_rsp_sz < REQUEST_SENSE_RESP_SZ) ? enc_stat_rsp_sz :
+                                                        REQUEST_SENSE_RESP_SZ;
+        ret = sg_ll_request_sense_pt(ptvp, false, enc_stat_rsp, n,
+                                     ! op->quiet, vb);
         if (0 == ret) {
-            int sense_len = REQUEST_SENSE_RESP_SZ - get_scsi_pt_resid(ptvp);
+            int sense_len = n - get_scsi_pt_resid(ptvp);
             struct sg_scsi_sense_hdr ssh;
 
             if ((sense_len > 7) && sg_scsi_normalize_sense(enc_stat_rsp,
@@ -5794,7 +5796,7 @@ main(int argc, char * argv[])
                         " problems ahead\n", ret);
         }
         clear_scsi_pt_obj(ptvp);
-        memset(enc_stat_rsp, 0, REQUEST_SENSE_RESP_SZ);
+        memset(enc_stat_rsp, 0, enc_stat_rsp_sz);
     }
 
     if (op->nickname_str)
-- 
2.27.0