svn commit: r366469 - head/tests/sys/kern

[Li-Wen Hsu]

Author: lwhsu
Date: Tue Oct  6 04:18:42 2020
New Revision: 366469
URL: https://svnweb.freebsd.org/changeset/base/366469

Log:
  Clear the dmesg buffer to prevent rotating causes issues
  
  This is a workaround for the current continuously failing test case
  
  sys.kern.sonewconn_overflow.sonewconn_overflow_01
  
  The side effect is the dmesg buffer got cleared and may effect other tests
  depends on dmesg output running in parallel.  The better solution would be
  tailing the log file like /var/log/debug.log
  
  Sponsored by:	The FreeBSD Foundation

Modified:
  head/tests/sys/kern/sonewconn_overflow.py

Modified: head/tests/sys/kern/sonewconn_overflow.py
==============================================================================
--- head/tests/sys/kern/sonewconn_overflow.py	Tue Oct  6 02:57:37 2020	(r366468)
+++ head/tests/sys/kern/sonewconn_overflow.py	Tue Oct  6 04:18:42 2020	(r366469)
@@ -85,6 +85,8 @@ class UnixTest(GenericTest):
 
 class LogChecker():
     def __init__(self):
+        # Clear the dmesg buffer to prevent rotating causes issues
+        os.system('/sbin/dmesg -c > /dev/null')
         # Figure out how big the dmesg buffer is.
         self.dmesgOff = len(check_output("/sbin/dmesg"))