(procfs_system_process_attributes): If `nread' has a negative value, assign

zero to it.

1 files changed, 9 insertions, 1 deletions

diff --git a/src/process.c b/src/process.c
index b5d2f3d4c9f..5084bc8d159 100644
--- a/src/process.c
+++ b/src/process.c
@@ -7434,6 +7434,14 @@ procfs_system_process_attributes (pid)
           cmdline[0] = '\0';
           if ((nread = read (fd, cmdline, cmdline_size)) >= 0)
             cmdline[nread++] = '\0';
+          else
+            {
+              /* Assigning zero to `nread' makes us skip the following
+                 two loops, assign zero to cmdline_size, and enter the
+                 following `if' clause that handles unknown command
+                 lines.  */
+              nread = 0;
+            }
           /* We don't want trailing null characters.  */
           for (p = cmdline + nread - 1; p > cmdline && !*p; p--)
             nread--;
@@ -7451,7 +7459,7 @@ procfs_system_process_attributes (pid)
             }
           cmdline_size = nread;
         }
-      else
+      if (!cmdline_size)
         {
           if (!cmd)
             cmd = "???";